Struct QuantumLLMConfig 

pub struct QuantumLLMConfig {
    pub transformer_config: QuantumTransformerConfig,
    pub vocab_size: usize,
    pub max_context_length: usize,
    pub quantum_memory_layers: usize,
    pub reasoning_config: QuantumReasoningConfig,
    pub memory_config: QuantumMemoryConfig,
    pub model_scale: ModelScale,
    pub training_config: QLLMTrainingConfig,
}

Quantum Large Language Model configuration

Fields

transformer_config: QuantumTransformerConfig

Base transformer configuration

vocab_size: usize

Vocabulary size

max_context_length: usize

Maximum context length

quantum_memory_layers: usize

Number of quantum memory layers

reasoning_config: QuantumReasoningConfig

Quantum reasoning module configuration

memory_config: QuantumMemoryConfig

Quantum memory configuration

model_scale: ModelScale

Model scale

training_config: QLLMTrainingConfig

Training configuration

Implementations

impl QuantumLLMConfig

pub fn small(vocab_size: usize) -> Self

Create small model configuration

Examples found in repository

examples/quantum_llm.rs (line 59)

fn model_configurations_demo() -> Result<()> {
    println!("   Creating quantum LLM configurations...");

    let vocab_size = 50000;

    // Small model for edge deployment
    let small_config = QuantumLLMConfig::small(vocab_size);
    println!("   Small Model Configuration:");
    println!("   - Vocabulary size: {}", small_config.vocab_size);
    println!(
        "   - Model dimension: {}",
        small_config.transformer_config.model_dim
    );
    println!(
        "   - Number of heads: {}",
        small_config.transformer_config.num_heads
    );
    println!(
        "   - Number of layers: {}",
        small_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        small_config.transformer_config.num_qubits
    );
    println!("   - Memory layers: {}", small_config.quantum_memory_layers);

    let small_model = QuantumLLM::new(small_config)?;
    println!(
        "   Small model parameters: {:.1}M",
        small_model.num_parameters() as f64 / 1_000_000.0
    );

    // Medium model for general use
    let medium_config = QuantumLLMConfig::medium(vocab_size);
    println!("\n   Medium Model Configuration:");
    println!(
        "   - Model dimension: {}",
        medium_config.transformer_config.model_dim
    );
    println!(
        "   - Number of layers: {}",
        medium_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        medium_config.transformer_config.num_qubits
    );
    println!(
        "   - Max context length: {}",
        medium_config.max_context_length
    );

    let medium_model = QuantumLLM::new(medium_config)?;
    println!(
        "   Medium model parameters: {:.1}M",
        medium_model.num_parameters() as f64 / 1_000_000.0
    );

    // Large model for research and advanced applications
    let large_config = QuantumLLMConfig::large(vocab_size);
    println!("\n   Large Model Configuration:");
    println!(
        "   - Model dimension: {}",
        large_config.transformer_config.model_dim
    );
    println!(
        "   - Number of layers: {}",
        large_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        large_config.transformer_config.num_qubits
    );
    println!(
        "   - Max context length: {}",
        large_config.max_context_length
    );
    println!(
        "   - Reasoning steps: {}",
        large_config.reasoning_config.reasoning_steps
    );

    let large_model = QuantumLLM::new(large_config)?;
    println!(
        "   Large model parameters: {:.1}B",
        large_model.num_parameters() as f64 / 1_000_000_000.0
    );

    // Compare quantum vs classical parameter efficiency
    println!("\n   Quantum Efficiency Analysis:");
    let quantum_efficiency =
        calculate_quantum_efficiency(&small_model, &medium_model, &large_model)?;
    println!("   - Quantum parameter efficiency: {quantum_efficiency:.2}x classical equivalent");

    Ok(())
}

/// Demonstrate quantum memory systems
fn quantum_memory_demo() -> Result<()> {
    println!("   Testing quantum memory systems...");

    // Test different memory configurations
    let memory_configs = vec![
        ("Basic Associative", QuantumMemoryConfig::default()),
        ("Enhanced Memory", QuantumMemoryConfig::enhanced()),
        ("Advanced Holographic", QuantumMemoryConfig::advanced()),
    ];

    for (name, config) in memory_configs {
        println!("\n   --- {name} Memory ---");

        let mut memory_system = QuantumMemorySystem::new(config.clone())?;
        println!("   Memory configuration:");
        println!("   - Memory size: {}", config.memory_size);
        println!("   - Associative memory: {}", config.associative_memory);
        println!("   - Episodic memory: {}", config.episodic_memory);
        println!("   - Retrieval mechanism: {:?}", config.retrieval_mechanism);
        println!("   - Quantum compression: {}", config.quantum_compression);

        // Test memory storage and retrieval
        let test_embeddings = Array3::from_shape_fn((2, 10, 128), |(b, s, d)| {
            0.1 * (d as f64).mul_add(0.01, (s as f64).mul_add(0.1, b as f64))
        });

        // Enhance embeddings with memory
        let enhanced = memory_system.enhance_embeddings(&test_embeddings)?;
        println!("   Enhanced embeddings shape: {:?}", enhanced.dim());

        // Measure memory enhancement effect
        let original_variance = test_embeddings.var(0.0);
        let enhanced_variance = enhanced.var(0.0);
        let enhancement_factor = enhanced_variance / original_variance;

        println!("   Memory enhancement factor: {enhancement_factor:.3}");

        // Test memory update
        let input_ids = Array2::from_shape_fn((2, 10), |(b, s)| (b * 10 + s) % 1000);
        memory_system.update_memory(&enhanced, &input_ids)?;

        println!("   Memory updated with new experiences");

        // Test memory retrieval patterns
        test_memory_patterns(&memory_system, &config)?;
    }

    Ok(())
}

/// Demonstrate quantum reasoning capabilities
fn quantum_reasoning_demo() -> Result<()> {
    println!("   Testing quantum reasoning modules...");

    let reasoning_configs = vec![
        ("Basic Logical", QuantumReasoningConfig::default()),
        ("Enhanced Causal", QuantumReasoningConfig::enhanced()),
        ("Advanced Analogical", QuantumReasoningConfig::advanced()),
    ];

    for (name, config) in reasoning_configs {
        println!("\n   --- {name} Reasoning ---");

        let mut reasoning_module = QuantumReasoningModule::new(config.clone())?;

        println!("   Reasoning capabilities:");
        println!("   - Logical reasoning: {}", config.logical_reasoning);
        println!("   - Causal reasoning: {}", config.causal_reasoning);
        println!("   - Analogical reasoning: {}", config.analogical_reasoning);
        println!("   - Reasoning steps: {}", config.reasoning_steps);
        println!("   - Circuit depth: {}", config.circuit_depth);
        println!(
            "   - Entanglement strength: {:.2}",
            config.entanglement_strength
        );

        // Test reasoning on sample hidden states
        let hidden_states = Array3::from_shape_fn((2, 8, 256), |(b, s, d)| {
            // Create patterns that require reasoning
            let logical_pattern = if s % 2 == 0 { 0.8 } else { 0.2 };
            let causal_pattern = s as f64 * 0.1;
            let base_value = logical_pattern + causal_pattern;

            0.05f64.mul_add((d as f64).mul_add(0.001, b as f64), base_value)
        });

        println!("   Input hidden states shape: {:?}", hidden_states.dim());

        // Apply quantum reasoning
        let reasoned_output = reasoning_module.apply_reasoning(&hidden_states)?;
        println!("   Reasoned output shape: {:?}", reasoned_output.dim());

        // Analyze reasoning effects
        let reasoning_enhancement =
            analyze_reasoning_enhancement(&hidden_states, &reasoned_output)?;
        println!("   Reasoning enhancement metrics:");
        println!(
            "   - Pattern amplification: {:.3}",
            reasoning_enhancement.pattern_amplification
        );
        println!(
            "   - Logical consistency: {:.3}",
            reasoning_enhancement.logical_consistency
        );
        println!(
            "   - Causal coherence: {:.3}",
            reasoning_enhancement.causal_coherence
        );

        // Test quantum coherence during reasoning
        let coherence = reasoning_module.measure_coherence()?;
        println!("   Quantum coherence: {coherence:.3}");

        // Test token selection enhancement
        let sample_logits = Array1::from_shape_fn(1000, |i| {
            0.01f64.mul_add((i as f64 * 0.1).sin(), 0.001 * fastrand::f64())
        });

        let enhanced_logits = reasoning_module.enhance_token_selection(&sample_logits)?;
        let enhancement_effect = (&enhanced_logits - &sample_logits)
            .mapv(f64::abs)
            .mean()
            .unwrap_or(0.0);
        println!("   Token selection enhancement: {enhancement_effect:.4}");
    }

    Ok(())
}

/// Demonstrate quantum-enhanced text generation
fn text_generation_demo() -> Result<()> {
    println!("   Testing quantum-enhanced text generation...");

    let config = QuantumLLMConfig::small(10000);
    let mut model = QuantumLLM::new(config)?;

    // Test different generation configurations
    let generation_configs = vec![
        ("Default", GenerationConfig::default()),
        ("Creative", GenerationConfig::creative()),
        ("Precise", GenerationConfig::precise()),
    ];

    let test_prompts = [
        "The quantum computer",
        "Artificial intelligence will",
        "In the future, quantum computing",
        "The relationship between quantum mechanics and consciousness",
    ];

    for (config_name, gen_config) in generation_configs {
        println!("\n   --- {config_name} Generation ---");
        println!("   Configuration:");
        println!("   - Max length: {}", gen_config.max_length);
        println!("   - Temperature: {:.1}", gen_config.temperature);
        println!("   - Top-k: {:?}", gen_config.top_k);
        println!("   - Top-p: {:?}", gen_config.top_p);
        println!(
            "   - Quantum reasoning: {}",
            gen_config.use_quantum_reasoning
        );
        println!("   - Memory usage: {}", gen_config.use_memory);
        println!("   - Chain-of-thought: {}", gen_config.chain_of_thought);

        for (i, prompt) in test_prompts.iter().take(2).enumerate() {
            println!("\n   Prompt {}: \"{}\"", i + 1, prompt);

            let start_time = std::time::Instant::now();
            let generated = model.generate(prompt, gen_config.clone())?;
            let generation_time = start_time.elapsed();

            // Display partial generated text (first 100 chars)
            let display_text = if generated.len() > 100 {
                format!("{}...", &generated[..100])
            } else {
                generated.clone()
            };

            println!("   Generated: \"{display_text}\"");
            println!("   Generation time: {generation_time:.2?}");

            // Analyze generation quality
            let quality = analyze_generation_quality(&generated, &gen_config)?;
            println!("   Quality metrics:");
            println!("   - Fluency: {:.2}", quality.fluency);
            println!("   - Coherence: {:.2}", quality.coherence);
            println!("   - Novelty: {:.2}", quality.novelty);
            println!("   - Quantum advantage: {:.3}", quality.quantum_advantage);
        }
    }

    // Display generation statistics
    let stats = model.generation_stats();
    println!("\n   Generation Statistics:");
    println!("   - Total tokens generated: {}", stats.total_tokens);
    println!("   - Quantum coherence: {:.3}", stats.quantum_coherence);
    println!("   - Reasoning steps taken: {}", stats.reasoning_steps);
    println!("   - Memory retrievals: {}", stats.memory_retrievals);

    Ok(())
}

/// Demonstrate language understanding capabilities
fn language_understanding_demo() -> Result<()> {
    println!("   Testing quantum language understanding...");

    let config = QuantumLLMConfig::medium(20000);
    let mut model = QuantumLLM::new(config)?;

    // Test different understanding tasks
    let understanding_tasks = vec![
        ("Reading Comprehension", vec![
            "The photon exhibits wave-particle duality in quantum mechanics.",
            "What properties does a photon exhibit according to quantum mechanics?",
        ]),
        ("Logical Reasoning", vec![
            "If all quantum states are normalized, and psi is a quantum state, then what can we conclude?",
            "Apply logical reasoning to derive the conclusion.",
        ]),
        ("Causal Understanding", vec![
            "When a quantum measurement is performed, the wavefunction collapses.",
            "What causes the wavefunction to collapse?",
        ]),
        ("Analogical Reasoning", vec![
            "Quantum superposition is like a coin spinning in the air before landing.",
            "How is quantum entanglement similar to this analogy?",
        ]),
    ];

    for (task_name, texts) in understanding_tasks {
        println!("\n   --- {task_name} Task ---");

        for (i, text) in texts.iter().enumerate() {
            println!("   Input {}: \"{}\"", i + 1, text);

            // Process text through model
            let input_ids = Array2::from_shape_vec((1, 10), vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 0])?;

            // Enable different reasoning modes based on task
            let use_reasoning = match task_name {
                "Logical Reasoning" => true,
                "Causal Understanding" => true,
                "Analogical Reasoning" => true,
                _ => false,
            };

            let use_memory = true;

            let output = model.forward(&input_ids, None, use_memory, use_reasoning)?;
            println!("   Model output shape: {:?}", output.dim());

            // Analyze understanding quality
            let understanding_score = evaluate_understanding_quality(&output, task_name)?;
            println!("   Understanding score: {understanding_score:.3}");
        }

        // Task-specific analysis
        match task_name {
            "Reading Comprehension" => {
                println!("   ✓ Model shows information extraction capabilities");
            }
            "Logical Reasoning" => {
                println!("   ✓ Quantum logical circuits enhance deductive reasoning");
            }
            "Causal Understanding" => {
                println!("   ✓ Causal reasoning networks identify cause-effect relationships");
            }
            "Analogical Reasoning" => {
                println!("   ✓ Quantum analogy engine maps structural similarities");
            }
            _ => {}
        }
    }

    Ok(())
}

/// Demonstrate chain-of-thought reasoning
fn chain_of_thought_demo() -> Result<()> {
    println!("   Testing quantum chain-of-thought reasoning...");

    let config = QuantumLLMConfig::large(30000);
    let mut model = QuantumLLM::new(config)?;

    let reasoning_problems = vec![
        ("Mathematical Problem",
         "If a quantum computer can factor a 2048-bit number in polynomial time, how does this compare to classical computers?"),
        ("Physics Problem",
         "Explain how quantum entanglement enables quantum teleportation step by step."),
        ("Logic Problem",
         "If quantum measurements are probabilistic, how can quantum algorithms be deterministic?"),
        ("Ethics Problem",
         "What are the implications of quantum computing for cryptography and privacy?"),
    ];

    for (problem_type, prompt) in reasoning_problems {
        println!("\n   --- {problem_type} ---");
        println!("   Problem: \"{prompt}\"");

        // Enable chain-of-thought generation
        let cot_config = GenerationConfig {
            max_length: 200,
            temperature: 0.8,
            top_k: Some(40),
            top_p: Some(0.9),
            repetition_penalty: 1.1,
            use_quantum_reasoning: true,
            use_memory: true,
            chain_of_thought: true,
        };

        let start_time = std::time::Instant::now();
        let reasoning_output = model.generate(prompt, cot_config)?;
        let reasoning_time = start_time.elapsed();

        // Display reasoning steps (truncated for readability)
        let display_output = if reasoning_output.len() > 200 {
            format!("{}...", &reasoning_output[..200])
        } else {
            reasoning_output.clone()
        };

        println!("   Chain-of-thought reasoning:");
        println!("   \"{display_output}\"");
        println!("   Reasoning time: {reasoning_time:.2?}");

        // Analyze reasoning quality
        let reasoning_analysis = analyze_cot_quality(&reasoning_output)?;
        println!("   Reasoning analysis:");
        println!("   - Logical steps: {}", reasoning_analysis.logical_steps);
        println!("   - Coherence score: {:.3}", reasoning_analysis.coherence);
        println!("   - Depth of reasoning: {:.3}", reasoning_analysis.depth);
        println!(
            "   - Quantum enhancement: {:.3}",
            reasoning_analysis.quantum_enhancement
        );

        // Check for quantum reasoning patterns
        if reasoning_analysis.quantum_enhancement > 0.5 {
            println!("   ✓ Strong quantum reasoning signature detected");
        } else if reasoning_analysis.quantum_enhancement > 0.2 {
            println!("   ~ Moderate quantum reasoning influence");
        } else {
            println!("   - Limited quantum reasoning detected");
        }
    }

    Ok(())
}

/// Demonstrate multi-modal quantum language processing
fn multimodal_demo() -> Result<()> {
    println!("   Testing multi-modal quantum language processing...");

    let config = QuantumLLMConfig::medium(25000);
    let mut model = QuantumLLM::new(config)?;

    // Simulate different modalities
    let multimodal_tasks = vec![
        (
            "Text + Quantum Data",
            "Analyze this quantum measurement sequence",
        ),
        (
            "Text + Mathematical",
            "Solve this quantum mechanics equation",
        ),
        ("Text + Logical", "Apply quantum logic to this proposition"),
        (
            "Text + Memory",
            "Recall information about quantum algorithms",
        ),
    ];

    for (modality, task_description) in multimodal_tasks {
        println!("\n   --- {modality} Processing ---");
        println!("   Task: \"{task_description}\"");

        // Create synthetic multi-modal input
        let text_input =
            Array2::from_shape_vec((1, 8), vec![100, 200, 300, 400, 500, 600, 700, 800])?;

        // Enable all quantum capabilities for multi-modal processing
        let output = model.forward(&text_input, None, true, true)?;

        println!("   Multi-modal output shape: {:?}", output.dim());

        // Analyze multi-modal integration
        let integration_quality = evaluate_multimodal_integration(&output, modality)?;
        println!("   Integration metrics:");
        println!(
            "   - Cross-modal coherence: {:.3}",
            integration_quality.coherence
        );
        println!(
            "   - Information fusion: {:.3}",
            integration_quality.fusion_quality
        );
        println!(
            "   - Quantum entanglement: {:.3}",
            integration_quality.quantum_entanglement
        );

        // Test specific capabilities based on modality
        match modality {
            "Text + Quantum Data" => {
                let quantum_analysis = analyze_quantum_data_processing(&output)?;
                println!(
                    "   - Quantum state recognition: {:.3}",
                    quantum_analysis.state_recognition
                );
                println!(
                    "   - Measurement prediction: {:.3}",
                    quantum_analysis.measurement_prediction
                );
            }
            "Text + Mathematical" => {
                let math_analysis = analyze_mathematical_reasoning(&output)?;
                println!(
                    "   - Equation understanding: {:.3}",
                    math_analysis.equation_understanding
                );
                println!(
                    "   - Symbol manipulation: {:.3}",
                    math_analysis.symbol_manipulation
                );
            }
            "Text + Logical" => {
                let logic_analysis = analyze_logical_processing(&output)?;
                println!("   - Logical validity: {:.3}", logic_analysis.validity);
                println!(
                    "   - Inference quality: {:.3}",
                    logic_analysis.inference_quality
                );
            }
            "Text + Memory" => {
                let memory_analysis = analyze_memory_retrieval(&output)?;
                println!("   - Memory accuracy: {:.3}", memory_analysis.accuracy);
                println!(
                    "   - Retrieval efficiency: {:.3}",
                    memory_analysis.efficiency
                );
            }
            _ => {}
        }
    }

    Ok(())
}

/// Demonstrate performance analysis and quantum advantage
fn performance_analysis_demo() -> Result<()> {
    println!("   Analyzing performance and quantum advantage...");

    // Create models of different scales
    let small_config = QuantumLLMConfig::small(10000);
    let medium_config = QuantumLLMConfig::medium(20000);
    let large_config = QuantumLLMConfig::large(50000);

    let small_model = QuantumLLM::new(small_config)?;
    let medium_model = QuantumLLM::new(medium_config)?;
    let large_model = QuantumLLM::new(large_config)?;

    let models = vec![
        ("Small", &small_model),
        ("Medium", &medium_model),
        ("Large", &large_model),
    ];

    println!("\n   Model Comparison:");

    for (name, model) in &models {
        let config = model.config();
        let params = model.num_parameters();

        println!("   {name} Model:");
        println!("   - Parameters: {:.1}M", params as f64 / 1_000_000.0);
        println!(
            "   - Model dimension: {}",
            config.transformer_config.model_dim
        );
        println!(
            "   - Quantum qubits: {}",
            config.transformer_config.num_qubits
        );
        println!("   - Memory size: {}", config.memory_config.memory_size);
        println!(
            "   - Reasoning steps: {}",
            config.reasoning_config.reasoning_steps
        );

        // Estimate quantum advantage
        let quantum_advantage = estimate_quantum_advantage(model)?;
        println!("   - Quantum advantage: {:.2}x", quantum_advantage.speedup);
        println!(
            "   - Memory efficiency: {:.2}x",
            quantum_advantage.memory_efficiency
        );
        println!(
            "   - Reasoning enhancement: {:.2}x",
            quantum_advantage.reasoning_enhancement
        );
    }

    // Performance benchmarks
    println!("\n   Performance Benchmarks:");

    let benchmark_tasks: Vec<(&str, fn(&QuantumLLM) -> Result<PerformanceMetrics>)> = vec![
        ("Text Generation", measure_generation_performance),
        ("Language Understanding", measure_understanding_performance),
        ("Reasoning Tasks", measure_reasoning_performance),
        ("Memory Operations", measure_memory_performance),
    ];

    for (task_name, benchmark_fn) in benchmark_tasks {
        println!("\n   {task_name} Benchmark:");

        for (model_name, model) in &models {
            let performance = benchmark_fn(model)?;
            println!(
                "   {} Model: {:.2} ops/sec, {:.1} MB memory",
                model_name, performance.operations_per_sec, performance.memory_usage_mb
            );
        }
    }

    // Quantum scaling analysis
    println!("\n   Quantum Scaling Analysis:");
    let scaling_analysis = analyze_quantum_scaling(&models)?;
    println!(
        "   - Parameter scaling: {:.2} (vs {:.2} classical)",
        scaling_analysis.quantum_scaling, scaling_analysis.classical_scaling
    );
    println!(
        "   - Performance scaling: {:.2}",
        scaling_analysis.performance_scaling
    );
    println!(
        "   - Quantum efficiency: {:.1}%",
        scaling_analysis.efficiency * 100.0
    );

    // Future projections
    println!("\n   Future Projections:");
    println!(
        "   - 100B parameter QLLM estimated efficiency: {:.2}x classical",
        project_future_efficiency(100_000_000_000)
    );
    println!(
        "   - Quantum coherence preservation: {:.1}%",
        project_coherence_preservation() * 100.0
    );
    println!(
        "   - Reasoning capability enhancement: {:.2}x",
        project_reasoning_enhancement()
    );

    Ok(())
}

pub fn medium(vocab_size: usize) -> Self

Create medium model configuration

Examples found in repository

examples/quantum_llm.rs (line 87)

fn model_configurations_demo() -> Result<()> {
    println!("   Creating quantum LLM configurations...");

    let vocab_size = 50000;

    // Small model for edge deployment
    let small_config = QuantumLLMConfig::small(vocab_size);
    println!("   Small Model Configuration:");
    println!("   - Vocabulary size: {}", small_config.vocab_size);
    println!(
        "   - Model dimension: {}",
        small_config.transformer_config.model_dim
    );
    println!(
        "   - Number of heads: {}",
        small_config.transformer_config.num_heads
    );
    println!(
        "   - Number of layers: {}",
        small_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        small_config.transformer_config.num_qubits
    );
    println!("   - Memory layers: {}", small_config.quantum_memory_layers);

    let small_model = QuantumLLM::new(small_config)?;
    println!(
        "   Small model parameters: {:.1}M",
        small_model.num_parameters() as f64 / 1_000_000.0
    );

    // Medium model for general use
    let medium_config = QuantumLLMConfig::medium(vocab_size);
    println!("\n   Medium Model Configuration:");
    println!(
        "   - Model dimension: {}",
        medium_config.transformer_config.model_dim
    );
    println!(
        "   - Number of layers: {}",
        medium_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        medium_config.transformer_config.num_qubits
    );
    println!(
        "   - Max context length: {}",
        medium_config.max_context_length
    );

    let medium_model = QuantumLLM::new(medium_config)?;
    println!(
        "   Medium model parameters: {:.1}M",
        medium_model.num_parameters() as f64 / 1_000_000.0
    );

    // Large model for research and advanced applications
    let large_config = QuantumLLMConfig::large(vocab_size);
    println!("\n   Large Model Configuration:");
    println!(
        "   - Model dimension: {}",
        large_config.transformer_config.model_dim
    );
    println!(
        "   - Number of layers: {}",
        large_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        large_config.transformer_config.num_qubits
    );
    println!(
        "   - Max context length: {}",
        large_config.max_context_length
    );
    println!(
        "   - Reasoning steps: {}",
        large_config.reasoning_config.reasoning_steps
    );

    let large_model = QuantumLLM::new(large_config)?;
    println!(
        "   Large model parameters: {:.1}B",
        large_model.num_parameters() as f64 / 1_000_000_000.0
    );

    // Compare quantum vs classical parameter efficiency
    println!("\n   Quantum Efficiency Analysis:");
    let quantum_efficiency =
        calculate_quantum_efficiency(&small_model, &medium_model, &large_model)?;
    println!("   - Quantum parameter efficiency: {quantum_efficiency:.2}x classical equivalent");

    Ok(())
}

/// Demonstrate quantum memory systems
fn quantum_memory_demo() -> Result<()> {
    println!("   Testing quantum memory systems...");

    // Test different memory configurations
    let memory_configs = vec![
        ("Basic Associative", QuantumMemoryConfig::default()),
        ("Enhanced Memory", QuantumMemoryConfig::enhanced()),
        ("Advanced Holographic", QuantumMemoryConfig::advanced()),
    ];

    for (name, config) in memory_configs {
        println!("\n   --- {name} Memory ---");

        let mut memory_system = QuantumMemorySystem::new(config.clone())?;
        println!("   Memory configuration:");
        println!("   - Memory size: {}", config.memory_size);
        println!("   - Associative memory: {}", config.associative_memory);
        println!("   - Episodic memory: {}", config.episodic_memory);
        println!("   - Retrieval mechanism: {:?}", config.retrieval_mechanism);
        println!("   - Quantum compression: {}", config.quantum_compression);

        // Test memory storage and retrieval
        let test_embeddings = Array3::from_shape_fn((2, 10, 128), |(b, s, d)| {
            0.1 * (d as f64).mul_add(0.01, (s as f64).mul_add(0.1, b as f64))
        });

        // Enhance embeddings with memory
        let enhanced = memory_system.enhance_embeddings(&test_embeddings)?;
        println!("   Enhanced embeddings shape: {:?}", enhanced.dim());

        // Measure memory enhancement effect
        let original_variance = test_embeddings.var(0.0);
        let enhanced_variance = enhanced.var(0.0);
        let enhancement_factor = enhanced_variance / original_variance;

        println!("   Memory enhancement factor: {enhancement_factor:.3}");

        // Test memory update
        let input_ids = Array2::from_shape_fn((2, 10), |(b, s)| (b * 10 + s) % 1000);
        memory_system.update_memory(&enhanced, &input_ids)?;

        println!("   Memory updated with new experiences");

        // Test memory retrieval patterns
        test_memory_patterns(&memory_system, &config)?;
    }

    Ok(())
}

/// Demonstrate quantum reasoning capabilities
fn quantum_reasoning_demo() -> Result<()> {
    println!("   Testing quantum reasoning modules...");

    let reasoning_configs = vec![
        ("Basic Logical", QuantumReasoningConfig::default()),
        ("Enhanced Causal", QuantumReasoningConfig::enhanced()),
        ("Advanced Analogical", QuantumReasoningConfig::advanced()),
    ];

    for (name, config) in reasoning_configs {
        println!("\n   --- {name} Reasoning ---");

        let mut reasoning_module = QuantumReasoningModule::new(config.clone())?;

        println!("   Reasoning capabilities:");
        println!("   - Logical reasoning: {}", config.logical_reasoning);
        println!("   - Causal reasoning: {}", config.causal_reasoning);
        println!("   - Analogical reasoning: {}", config.analogical_reasoning);
        println!("   - Reasoning steps: {}", config.reasoning_steps);
        println!("   - Circuit depth: {}", config.circuit_depth);
        println!(
            "   - Entanglement strength: {:.2}",
            config.entanglement_strength
        );

        // Test reasoning on sample hidden states
        let hidden_states = Array3::from_shape_fn((2, 8, 256), |(b, s, d)| {
            // Create patterns that require reasoning
            let logical_pattern = if s % 2 == 0 { 0.8 } else { 0.2 };
            let causal_pattern = s as f64 * 0.1;
            let base_value = logical_pattern + causal_pattern;

            0.05f64.mul_add((d as f64).mul_add(0.001, b as f64), base_value)
        });

        println!("   Input hidden states shape: {:?}", hidden_states.dim());

        // Apply quantum reasoning
        let reasoned_output = reasoning_module.apply_reasoning(&hidden_states)?;
        println!("   Reasoned output shape: {:?}", reasoned_output.dim());

        // Analyze reasoning effects
        let reasoning_enhancement =
            analyze_reasoning_enhancement(&hidden_states, &reasoned_output)?;
        println!("   Reasoning enhancement metrics:");
        println!(
            "   - Pattern amplification: {:.3}",
            reasoning_enhancement.pattern_amplification
        );
        println!(
            "   - Logical consistency: {:.3}",
            reasoning_enhancement.logical_consistency
        );
        println!(
            "   - Causal coherence: {:.3}",
            reasoning_enhancement.causal_coherence
        );

        // Test quantum coherence during reasoning
        let coherence = reasoning_module.measure_coherence()?;
        println!("   Quantum coherence: {coherence:.3}");

        // Test token selection enhancement
        let sample_logits = Array1::from_shape_fn(1000, |i| {
            0.01f64.mul_add((i as f64 * 0.1).sin(), 0.001 * fastrand::f64())
        });

        let enhanced_logits = reasoning_module.enhance_token_selection(&sample_logits)?;
        let enhancement_effect = (&enhanced_logits - &sample_logits)
            .mapv(f64::abs)
            .mean()
            .unwrap_or(0.0);
        println!("   Token selection enhancement: {enhancement_effect:.4}");
    }

    Ok(())
}

/// Demonstrate quantum-enhanced text generation
fn text_generation_demo() -> Result<()> {
    println!("   Testing quantum-enhanced text generation...");

    let config = QuantumLLMConfig::small(10000);
    let mut model = QuantumLLM::new(config)?;

    // Test different generation configurations
    let generation_configs = vec![
        ("Default", GenerationConfig::default()),
        ("Creative", GenerationConfig::creative()),
        ("Precise", GenerationConfig::precise()),
    ];

    let test_prompts = [
        "The quantum computer",
        "Artificial intelligence will",
        "In the future, quantum computing",
        "The relationship between quantum mechanics and consciousness",
    ];

    for (config_name, gen_config) in generation_configs {
        println!("\n   --- {config_name} Generation ---");
        println!("   Configuration:");
        println!("   - Max length: {}", gen_config.max_length);
        println!("   - Temperature: {:.1}", gen_config.temperature);
        println!("   - Top-k: {:?}", gen_config.top_k);
        println!("   - Top-p: {:?}", gen_config.top_p);
        println!(
            "   - Quantum reasoning: {}",
            gen_config.use_quantum_reasoning
        );
        println!("   - Memory usage: {}", gen_config.use_memory);
        println!("   - Chain-of-thought: {}", gen_config.chain_of_thought);

        for (i, prompt) in test_prompts.iter().take(2).enumerate() {
            println!("\n   Prompt {}: \"{}\"", i + 1, prompt);

            let start_time = std::time::Instant::now();
            let generated = model.generate(prompt, gen_config.clone())?;
            let generation_time = start_time.elapsed();

            // Display partial generated text (first 100 chars)
            let display_text = if generated.len() > 100 {
                format!("{}...", &generated[..100])
            } else {
                generated.clone()
            };

            println!("   Generated: \"{display_text}\"");
            println!("   Generation time: {generation_time:.2?}");

            // Analyze generation quality
            let quality = analyze_generation_quality(&generated, &gen_config)?;
            println!("   Quality metrics:");
            println!("   - Fluency: {:.2}", quality.fluency);
            println!("   - Coherence: {:.2}", quality.coherence);
            println!("   - Novelty: {:.2}", quality.novelty);
            println!("   - Quantum advantage: {:.3}", quality.quantum_advantage);
        }
    }

    // Display generation statistics
    let stats = model.generation_stats();
    println!("\n   Generation Statistics:");
    println!("   - Total tokens generated: {}", stats.total_tokens);
    println!("   - Quantum coherence: {:.3}", stats.quantum_coherence);
    println!("   - Reasoning steps taken: {}", stats.reasoning_steps);
    println!("   - Memory retrievals: {}", stats.memory_retrievals);

    Ok(())
}

/// Demonstrate language understanding capabilities
fn language_understanding_demo() -> Result<()> {
    println!("   Testing quantum language understanding...");

    let config = QuantumLLMConfig::medium(20000);
    let mut model = QuantumLLM::new(config)?;

    // Test different understanding tasks
    let understanding_tasks = vec![
        ("Reading Comprehension", vec![
            "The photon exhibits wave-particle duality in quantum mechanics.",
            "What properties does a photon exhibit according to quantum mechanics?",
        ]),
        ("Logical Reasoning", vec![
            "If all quantum states are normalized, and psi is a quantum state, then what can we conclude?",
            "Apply logical reasoning to derive the conclusion.",
        ]),
        ("Causal Understanding", vec![
            "When a quantum measurement is performed, the wavefunction collapses.",
            "What causes the wavefunction to collapse?",
        ]),
        ("Analogical Reasoning", vec![
            "Quantum superposition is like a coin spinning in the air before landing.",
            "How is quantum entanglement similar to this analogy?",
        ]),
    ];

    for (task_name, texts) in understanding_tasks {
        println!("\n   --- {task_name} Task ---");

        for (i, text) in texts.iter().enumerate() {
            println!("   Input {}: \"{}\"", i + 1, text);

            // Process text through model
            let input_ids = Array2::from_shape_vec((1, 10), vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 0])?;

            // Enable different reasoning modes based on task
            let use_reasoning = match task_name {
                "Logical Reasoning" => true,
                "Causal Understanding" => true,
                "Analogical Reasoning" => true,
                _ => false,
            };

            let use_memory = true;

            let output = model.forward(&input_ids, None, use_memory, use_reasoning)?;
            println!("   Model output shape: {:?}", output.dim());

            // Analyze understanding quality
            let understanding_score = evaluate_understanding_quality(&output, task_name)?;
            println!("   Understanding score: {understanding_score:.3}");
        }

        // Task-specific analysis
        match task_name {
            "Reading Comprehension" => {
                println!("   ✓ Model shows information extraction capabilities");
            }
            "Logical Reasoning" => {
                println!("   ✓ Quantum logical circuits enhance deductive reasoning");
            }
            "Causal Understanding" => {
                println!("   ✓ Causal reasoning networks identify cause-effect relationships");
            }
            "Analogical Reasoning" => {
                println!("   ✓ Quantum analogy engine maps structural similarities");
            }
            _ => {}
        }
    }

    Ok(())
}

/// Demonstrate chain-of-thought reasoning
fn chain_of_thought_demo() -> Result<()> {
    println!("   Testing quantum chain-of-thought reasoning...");

    let config = QuantumLLMConfig::large(30000);
    let mut model = QuantumLLM::new(config)?;

    let reasoning_problems = vec![
        ("Mathematical Problem",
         "If a quantum computer can factor a 2048-bit number in polynomial time, how does this compare to classical computers?"),
        ("Physics Problem",
         "Explain how quantum entanglement enables quantum teleportation step by step."),
        ("Logic Problem",
         "If quantum measurements are probabilistic, how can quantum algorithms be deterministic?"),
        ("Ethics Problem",
         "What are the implications of quantum computing for cryptography and privacy?"),
    ];

    for (problem_type, prompt) in reasoning_problems {
        println!("\n   --- {problem_type} ---");
        println!("   Problem: \"{prompt}\"");

        // Enable chain-of-thought generation
        let cot_config = GenerationConfig {
            max_length: 200,
            temperature: 0.8,
            top_k: Some(40),
            top_p: Some(0.9),
            repetition_penalty: 1.1,
            use_quantum_reasoning: true,
            use_memory: true,
            chain_of_thought: true,
        };

        let start_time = std::time::Instant::now();
        let reasoning_output = model.generate(prompt, cot_config)?;
        let reasoning_time = start_time.elapsed();

        // Display reasoning steps (truncated for readability)
        let display_output = if reasoning_output.len() > 200 {
            format!("{}...", &reasoning_output[..200])
        } else {
            reasoning_output.clone()
        };

        println!("   Chain-of-thought reasoning:");
        println!("   \"{display_output}\"");
        println!("   Reasoning time: {reasoning_time:.2?}");

        // Analyze reasoning quality
        let reasoning_analysis = analyze_cot_quality(&reasoning_output)?;
        println!("   Reasoning analysis:");
        println!("   - Logical steps: {}", reasoning_analysis.logical_steps);
        println!("   - Coherence score: {:.3}", reasoning_analysis.coherence);
        println!("   - Depth of reasoning: {:.3}", reasoning_analysis.depth);
        println!(
            "   - Quantum enhancement: {:.3}",
            reasoning_analysis.quantum_enhancement
        );

        // Check for quantum reasoning patterns
        if reasoning_analysis.quantum_enhancement > 0.5 {
            println!("   ✓ Strong quantum reasoning signature detected");
        } else if reasoning_analysis.quantum_enhancement > 0.2 {
            println!("   ~ Moderate quantum reasoning influence");
        } else {
            println!("   - Limited quantum reasoning detected");
        }
    }

    Ok(())
}

/// Demonstrate multi-modal quantum language processing
fn multimodal_demo() -> Result<()> {
    println!("   Testing multi-modal quantum language processing...");

    let config = QuantumLLMConfig::medium(25000);
    let mut model = QuantumLLM::new(config)?;

    // Simulate different modalities
    let multimodal_tasks = vec![
        (
            "Text + Quantum Data",
            "Analyze this quantum measurement sequence",
        ),
        (
            "Text + Mathematical",
            "Solve this quantum mechanics equation",
        ),
        ("Text + Logical", "Apply quantum logic to this proposition"),
        (
            "Text + Memory",
            "Recall information about quantum algorithms",
        ),
    ];

    for (modality, task_description) in multimodal_tasks {
        println!("\n   --- {modality} Processing ---");
        println!("   Task: \"{task_description}\"");

        // Create synthetic multi-modal input
        let text_input =
            Array2::from_shape_vec((1, 8), vec![100, 200, 300, 400, 500, 600, 700, 800])?;

        // Enable all quantum capabilities for multi-modal processing
        let output = model.forward(&text_input, None, true, true)?;

        println!("   Multi-modal output shape: {:?}", output.dim());

        // Analyze multi-modal integration
        let integration_quality = evaluate_multimodal_integration(&output, modality)?;
        println!("   Integration metrics:");
        println!(
            "   - Cross-modal coherence: {:.3}",
            integration_quality.coherence
        );
        println!(
            "   - Information fusion: {:.3}",
            integration_quality.fusion_quality
        );
        println!(
            "   - Quantum entanglement: {:.3}",
            integration_quality.quantum_entanglement
        );

        // Test specific capabilities based on modality
        match modality {
            "Text + Quantum Data" => {
                let quantum_analysis = analyze_quantum_data_processing(&output)?;
                println!(
                    "   - Quantum state recognition: {:.3}",
                    quantum_analysis.state_recognition
                );
                println!(
                    "   - Measurement prediction: {:.3}",
                    quantum_analysis.measurement_prediction
                );
            }
            "Text + Mathematical" => {
                let math_analysis = analyze_mathematical_reasoning(&output)?;
                println!(
                    "   - Equation understanding: {:.3}",
                    math_analysis.equation_understanding
                );
                println!(
                    "   - Symbol manipulation: {:.3}",
                    math_analysis.symbol_manipulation
                );
            }
            "Text + Logical" => {
                let logic_analysis = analyze_logical_processing(&output)?;
                println!("   - Logical validity: {:.3}", logic_analysis.validity);
                println!(
                    "   - Inference quality: {:.3}",
                    logic_analysis.inference_quality
                );
            }
            "Text + Memory" => {
                let memory_analysis = analyze_memory_retrieval(&output)?;
                println!("   - Memory accuracy: {:.3}", memory_analysis.accuracy);
                println!(
                    "   - Retrieval efficiency: {:.3}",
                    memory_analysis.efficiency
                );
            }
            _ => {}
        }
    }

    Ok(())
}

/// Demonstrate performance analysis and quantum advantage
fn performance_analysis_demo() -> Result<()> {
    println!("   Analyzing performance and quantum advantage...");

    // Create models of different scales
    let small_config = QuantumLLMConfig::small(10000);
    let medium_config = QuantumLLMConfig::medium(20000);
    let large_config = QuantumLLMConfig::large(50000);

    let small_model = QuantumLLM::new(small_config)?;
    let medium_model = QuantumLLM::new(medium_config)?;
    let large_model = QuantumLLM::new(large_config)?;

    let models = vec![
        ("Small", &small_model),
        ("Medium", &medium_model),
        ("Large", &large_model),
    ];

    println!("\n   Model Comparison:");

    for (name, model) in &models {
        let config = model.config();
        let params = model.num_parameters();

        println!("   {name} Model:");
        println!("   - Parameters: {:.1}M", params as f64 / 1_000_000.0);
        println!(
            "   - Model dimension: {}",
            config.transformer_config.model_dim
        );
        println!(
            "   - Quantum qubits: {}",
            config.transformer_config.num_qubits
        );
        println!("   - Memory size: {}", config.memory_config.memory_size);
        println!(
            "   - Reasoning steps: {}",
            config.reasoning_config.reasoning_steps
        );

        // Estimate quantum advantage
        let quantum_advantage = estimate_quantum_advantage(model)?;
        println!("   - Quantum advantage: {:.2}x", quantum_advantage.speedup);
        println!(
            "   - Memory efficiency: {:.2}x",
            quantum_advantage.memory_efficiency
        );
        println!(
            "   - Reasoning enhancement: {:.2}x",
            quantum_advantage.reasoning_enhancement
        );
    }

    // Performance benchmarks
    println!("\n   Performance Benchmarks:");

    let benchmark_tasks: Vec<(&str, fn(&QuantumLLM) -> Result<PerformanceMetrics>)> = vec![
        ("Text Generation", measure_generation_performance),
        ("Language Understanding", measure_understanding_performance),
        ("Reasoning Tasks", measure_reasoning_performance),
        ("Memory Operations", measure_memory_performance),
    ];

    for (task_name, benchmark_fn) in benchmark_tasks {
        println!("\n   {task_name} Benchmark:");

        for (model_name, model) in &models {
            let performance = benchmark_fn(model)?;
            println!(
                "   {} Model: {:.2} ops/sec, {:.1} MB memory",
                model_name, performance.operations_per_sec, performance.memory_usage_mb
            );
        }
    }

    // Quantum scaling analysis
    println!("\n   Quantum Scaling Analysis:");
    let scaling_analysis = analyze_quantum_scaling(&models)?;
    println!(
        "   - Parameter scaling: {:.2} (vs {:.2} classical)",
        scaling_analysis.quantum_scaling, scaling_analysis.classical_scaling
    );
    println!(
        "   - Performance scaling: {:.2}",
        scaling_analysis.performance_scaling
    );
    println!(
        "   - Quantum efficiency: {:.1}%",
        scaling_analysis.efficiency * 100.0
    );

    // Future projections
    println!("\n   Future Projections:");
    println!(
        "   - 100B parameter QLLM estimated efficiency: {:.2}x classical",
        project_future_efficiency(100_000_000_000)
    );
    println!(
        "   - Quantum coherence preservation: {:.1}%",
        project_coherence_preservation() * 100.0
    );
    println!(
        "   - Reasoning capability enhancement: {:.2}x",
        project_reasoning_enhancement()
    );

    Ok(())
}

pub fn large(vocab_size: usize) -> Self

Create large model configuration

Examples found in repository

examples/quantum_llm.rs (line 113)

fn model_configurations_demo() -> Result<()> {
    println!("   Creating quantum LLM configurations...");

    let vocab_size = 50000;

    // Small model for edge deployment
    let small_config = QuantumLLMConfig::small(vocab_size);
    println!("   Small Model Configuration:");
    println!("   - Vocabulary size: {}", small_config.vocab_size);
    println!(
        "   - Model dimension: {}",
        small_config.transformer_config.model_dim
    );
    println!(
        "   - Number of heads: {}",
        small_config.transformer_config.num_heads
    );
    println!(
        "   - Number of layers: {}",
        small_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        small_config.transformer_config.num_qubits
    );
    println!("   - Memory layers: {}", small_config.quantum_memory_layers);

    let small_model = QuantumLLM::new(small_config)?;
    println!(
        "   Small model parameters: {:.1}M",
        small_model.num_parameters() as f64 / 1_000_000.0
    );

    // Medium model for general use
    let medium_config = QuantumLLMConfig::medium(vocab_size);
    println!("\n   Medium Model Configuration:");
    println!(
        "   - Model dimension: {}",
        medium_config.transformer_config.model_dim
    );
    println!(
        "   - Number of layers: {}",
        medium_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        medium_config.transformer_config.num_qubits
    );
    println!(
        "   - Max context length: {}",
        medium_config.max_context_length
    );

    let medium_model = QuantumLLM::new(medium_config)?;
    println!(
        "   Medium model parameters: {:.1}M",
        medium_model.num_parameters() as f64 / 1_000_000.0
    );

    // Large model for research and advanced applications
    let large_config = QuantumLLMConfig::large(vocab_size);
    println!("\n   Large Model Configuration:");
    println!(
        "   - Model dimension: {}",
        large_config.transformer_config.model_dim
    );
    println!(
        "   - Number of layers: {}",
        large_config.transformer_config.num_layers
    );
    println!(
        "   - Quantum qubits: {}",
        large_config.transformer_config.num_qubits
    );
    println!(
        "   - Max context length: {}",
        large_config.max_context_length
    );
    println!(
        "   - Reasoning steps: {}",
        large_config.reasoning_config.reasoning_steps
    );

    let large_model = QuantumLLM::new(large_config)?;
    println!(
        "   Large model parameters: {:.1}B",
        large_model.num_parameters() as f64 / 1_000_000_000.0
    );

    // Compare quantum vs classical parameter efficiency
    println!("\n   Quantum Efficiency Analysis:");
    let quantum_efficiency =
        calculate_quantum_efficiency(&small_model, &medium_model, &large_model)?;
    println!("   - Quantum parameter efficiency: {quantum_efficiency:.2}x classical equivalent");

    Ok(())
}

/// Demonstrate quantum memory systems
fn quantum_memory_demo() -> Result<()> {
    println!("   Testing quantum memory systems...");

    // Test different memory configurations
    let memory_configs = vec![
        ("Basic Associative", QuantumMemoryConfig::default()),
        ("Enhanced Memory", QuantumMemoryConfig::enhanced()),
        ("Advanced Holographic", QuantumMemoryConfig::advanced()),
    ];

    for (name, config) in memory_configs {
        println!("\n   --- {name} Memory ---");

        let mut memory_system = QuantumMemorySystem::new(config.clone())?;
        println!("   Memory configuration:");
        println!("   - Memory size: {}", config.memory_size);
        println!("   - Associative memory: {}", config.associative_memory);
        println!("   - Episodic memory: {}", config.episodic_memory);
        println!("   - Retrieval mechanism: {:?}", config.retrieval_mechanism);
        println!("   - Quantum compression: {}", config.quantum_compression);

        // Test memory storage and retrieval
        let test_embeddings = Array3::from_shape_fn((2, 10, 128), |(b, s, d)| {
            0.1 * (d as f64).mul_add(0.01, (s as f64).mul_add(0.1, b as f64))
        });

        // Enhance embeddings with memory
        let enhanced = memory_system.enhance_embeddings(&test_embeddings)?;
        println!("   Enhanced embeddings shape: {:?}", enhanced.dim());

        // Measure memory enhancement effect
        let original_variance = test_embeddings.var(0.0);
        let enhanced_variance = enhanced.var(0.0);
        let enhancement_factor = enhanced_variance / original_variance;

        println!("   Memory enhancement factor: {enhancement_factor:.3}");

        // Test memory update
        let input_ids = Array2::from_shape_fn((2, 10), |(b, s)| (b * 10 + s) % 1000);
        memory_system.update_memory(&enhanced, &input_ids)?;

        println!("   Memory updated with new experiences");

        // Test memory retrieval patterns
        test_memory_patterns(&memory_system, &config)?;
    }

    Ok(())
}

/// Demonstrate quantum reasoning capabilities
fn quantum_reasoning_demo() -> Result<()> {
    println!("   Testing quantum reasoning modules...");

    let reasoning_configs = vec![
        ("Basic Logical", QuantumReasoningConfig::default()),
        ("Enhanced Causal", QuantumReasoningConfig::enhanced()),
        ("Advanced Analogical", QuantumReasoningConfig::advanced()),
    ];

    for (name, config) in reasoning_configs {
        println!("\n   --- {name} Reasoning ---");

        let mut reasoning_module = QuantumReasoningModule::new(config.clone())?;

        println!("   Reasoning capabilities:");
        println!("   - Logical reasoning: {}", config.logical_reasoning);
        println!("   - Causal reasoning: {}", config.causal_reasoning);
        println!("   - Analogical reasoning: {}", config.analogical_reasoning);
        println!("   - Reasoning steps: {}", config.reasoning_steps);
        println!("   - Circuit depth: {}", config.circuit_depth);
        println!(
            "   - Entanglement strength: {:.2}",
            config.entanglement_strength
        );

        // Test reasoning on sample hidden states
        let hidden_states = Array3::from_shape_fn((2, 8, 256), |(b, s, d)| {
            // Create patterns that require reasoning
            let logical_pattern = if s % 2 == 0 { 0.8 } else { 0.2 };
            let causal_pattern = s as f64 * 0.1;
            let base_value = logical_pattern + causal_pattern;

            0.05f64.mul_add((d as f64).mul_add(0.001, b as f64), base_value)
        });

        println!("   Input hidden states shape: {:?}", hidden_states.dim());

        // Apply quantum reasoning
        let reasoned_output = reasoning_module.apply_reasoning(&hidden_states)?;
        println!("   Reasoned output shape: {:?}", reasoned_output.dim());

        // Analyze reasoning effects
        let reasoning_enhancement =
            analyze_reasoning_enhancement(&hidden_states, &reasoned_output)?;
        println!("   Reasoning enhancement metrics:");
        println!(
            "   - Pattern amplification: {:.3}",
            reasoning_enhancement.pattern_amplification
        );
        println!(
            "   - Logical consistency: {:.3}",
            reasoning_enhancement.logical_consistency
        );
        println!(
            "   - Causal coherence: {:.3}",
            reasoning_enhancement.causal_coherence
        );

        // Test quantum coherence during reasoning
        let coherence = reasoning_module.measure_coherence()?;
        println!("   Quantum coherence: {coherence:.3}");

        // Test token selection enhancement
        let sample_logits = Array1::from_shape_fn(1000, |i| {
            0.01f64.mul_add((i as f64 * 0.1).sin(), 0.001 * fastrand::f64())
        });

        let enhanced_logits = reasoning_module.enhance_token_selection(&sample_logits)?;
        let enhancement_effect = (&enhanced_logits - &sample_logits)
            .mapv(f64::abs)
            .mean()
            .unwrap_or(0.0);
        println!("   Token selection enhancement: {enhancement_effect:.4}");
    }

    Ok(())
}

/// Demonstrate quantum-enhanced text generation
fn text_generation_demo() -> Result<()> {
    println!("   Testing quantum-enhanced text generation...");

    let config = QuantumLLMConfig::small(10000);
    let mut model = QuantumLLM::new(config)?;

    // Test different generation configurations
    let generation_configs = vec![
        ("Default", GenerationConfig::default()),
        ("Creative", GenerationConfig::creative()),
        ("Precise", GenerationConfig::precise()),
    ];

    let test_prompts = [
        "The quantum computer",
        "Artificial intelligence will",
        "In the future, quantum computing",
        "The relationship between quantum mechanics and consciousness",
    ];

    for (config_name, gen_config) in generation_configs {
        println!("\n   --- {config_name} Generation ---");
        println!("   Configuration:");
        println!("   - Max length: {}", gen_config.max_length);
        println!("   - Temperature: {:.1}", gen_config.temperature);
        println!("   - Top-k: {:?}", gen_config.top_k);
        println!("   - Top-p: {:?}", gen_config.top_p);
        println!(
            "   - Quantum reasoning: {}",
            gen_config.use_quantum_reasoning
        );
        println!("   - Memory usage: {}", gen_config.use_memory);
        println!("   - Chain-of-thought: {}", gen_config.chain_of_thought);

        for (i, prompt) in test_prompts.iter().take(2).enumerate() {
            println!("\n   Prompt {}: \"{}\"", i + 1, prompt);

            let start_time = std::time::Instant::now();
            let generated = model.generate(prompt, gen_config.clone())?;
            let generation_time = start_time.elapsed();

            // Display partial generated text (first 100 chars)
            let display_text = if generated.len() > 100 {
                format!("{}...", &generated[..100])
            } else {
                generated.clone()
            };

            println!("   Generated: \"{display_text}\"");
            println!("   Generation time: {generation_time:.2?}");

            // Analyze generation quality
            let quality = analyze_generation_quality(&generated, &gen_config)?;
            println!("   Quality metrics:");
            println!("   - Fluency: {:.2}", quality.fluency);
            println!("   - Coherence: {:.2}", quality.coherence);
            println!("   - Novelty: {:.2}", quality.novelty);
            println!("   - Quantum advantage: {:.3}", quality.quantum_advantage);
        }
    }

    // Display generation statistics
    let stats = model.generation_stats();
    println!("\n   Generation Statistics:");
    println!("   - Total tokens generated: {}", stats.total_tokens);
    println!("   - Quantum coherence: {:.3}", stats.quantum_coherence);
    println!("   - Reasoning steps taken: {}", stats.reasoning_steps);
    println!("   - Memory retrievals: {}", stats.memory_retrievals);

    Ok(())
}

/// Demonstrate language understanding capabilities
fn language_understanding_demo() -> Result<()> {
    println!("   Testing quantum language understanding...");

    let config = QuantumLLMConfig::medium(20000);
    let mut model = QuantumLLM::new(config)?;

    // Test different understanding tasks
    let understanding_tasks = vec![
        ("Reading Comprehension", vec![
            "The photon exhibits wave-particle duality in quantum mechanics.",
            "What properties does a photon exhibit according to quantum mechanics?",
        ]),
        ("Logical Reasoning", vec![
            "If all quantum states are normalized, and psi is a quantum state, then what can we conclude?",
            "Apply logical reasoning to derive the conclusion.",
        ]),
        ("Causal Understanding", vec![
            "When a quantum measurement is performed, the wavefunction collapses.",
            "What causes the wavefunction to collapse?",
        ]),
        ("Analogical Reasoning", vec![
            "Quantum superposition is like a coin spinning in the air before landing.",
            "How is quantum entanglement similar to this analogy?",
        ]),
    ];

    for (task_name, texts) in understanding_tasks {
        println!("\n   --- {task_name} Task ---");

        for (i, text) in texts.iter().enumerate() {
            println!("   Input {}: \"{}\"", i + 1, text);

            // Process text through model
            let input_ids = Array2::from_shape_vec((1, 10), vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 0])?;

            // Enable different reasoning modes based on task
            let use_reasoning = match task_name {
                "Logical Reasoning" => true,
                "Causal Understanding" => true,
                "Analogical Reasoning" => true,
                _ => false,
            };

            let use_memory = true;

            let output = model.forward(&input_ids, None, use_memory, use_reasoning)?;
            println!("   Model output shape: {:?}", output.dim());

            // Analyze understanding quality
            let understanding_score = evaluate_understanding_quality(&output, task_name)?;
            println!("   Understanding score: {understanding_score:.3}");
        }

        // Task-specific analysis
        match task_name {
            "Reading Comprehension" => {
                println!("   ✓ Model shows information extraction capabilities");
            }
            "Logical Reasoning" => {
                println!("   ✓ Quantum logical circuits enhance deductive reasoning");
            }
            "Causal Understanding" => {
                println!("   ✓ Causal reasoning networks identify cause-effect relationships");
            }
            "Analogical Reasoning" => {
                println!("   ✓ Quantum analogy engine maps structural similarities");
            }
            _ => {}
        }
    }

    Ok(())
}

/// Demonstrate chain-of-thought reasoning
fn chain_of_thought_demo() -> Result<()> {
    println!("   Testing quantum chain-of-thought reasoning...");

    let config = QuantumLLMConfig::large(30000);
    let mut model = QuantumLLM::new(config)?;

    let reasoning_problems = vec![
        ("Mathematical Problem",
         "If a quantum computer can factor a 2048-bit number in polynomial time, how does this compare to classical computers?"),
        ("Physics Problem",
         "Explain how quantum entanglement enables quantum teleportation step by step."),
        ("Logic Problem",
         "If quantum measurements are probabilistic, how can quantum algorithms be deterministic?"),
        ("Ethics Problem",
         "What are the implications of quantum computing for cryptography and privacy?"),
    ];

    for (problem_type, prompt) in reasoning_problems {
        println!("\n   --- {problem_type} ---");
        println!("   Problem: \"{prompt}\"");

        // Enable chain-of-thought generation
        let cot_config = GenerationConfig {
            max_length: 200,
            temperature: 0.8,
            top_k: Some(40),
            top_p: Some(0.9),
            repetition_penalty: 1.1,
            use_quantum_reasoning: true,
            use_memory: true,
            chain_of_thought: true,
        };

        let start_time = std::time::Instant::now();
        let reasoning_output = model.generate(prompt, cot_config)?;
        let reasoning_time = start_time.elapsed();

        // Display reasoning steps (truncated for readability)
        let display_output = if reasoning_output.len() > 200 {
            format!("{}...", &reasoning_output[..200])
        } else {
            reasoning_output.clone()
        };

        println!("   Chain-of-thought reasoning:");
        println!("   \"{display_output}\"");
        println!("   Reasoning time: {reasoning_time:.2?}");

        // Analyze reasoning quality
        let reasoning_analysis = analyze_cot_quality(&reasoning_output)?;
        println!("   Reasoning analysis:");
        println!("   - Logical steps: {}", reasoning_analysis.logical_steps);
        println!("   - Coherence score: {:.3}", reasoning_analysis.coherence);
        println!("   - Depth of reasoning: {:.3}", reasoning_analysis.depth);
        println!(
            "   - Quantum enhancement: {:.3}",
            reasoning_analysis.quantum_enhancement
        );

        // Check for quantum reasoning patterns
        if reasoning_analysis.quantum_enhancement > 0.5 {
            println!("   ✓ Strong quantum reasoning signature detected");
        } else if reasoning_analysis.quantum_enhancement > 0.2 {
            println!("   ~ Moderate quantum reasoning influence");
        } else {
            println!("   - Limited quantum reasoning detected");
        }
    }

    Ok(())
}

/// Demonstrate multi-modal quantum language processing
fn multimodal_demo() -> Result<()> {
    println!("   Testing multi-modal quantum language processing...");

    let config = QuantumLLMConfig::medium(25000);
    let mut model = QuantumLLM::new(config)?;

    // Simulate different modalities
    let multimodal_tasks = vec![
        (
            "Text + Quantum Data",
            "Analyze this quantum measurement sequence",
        ),
        (
            "Text + Mathematical",
            "Solve this quantum mechanics equation",
        ),
        ("Text + Logical", "Apply quantum logic to this proposition"),
        (
            "Text + Memory",
            "Recall information about quantum algorithms",
        ),
    ];

    for (modality, task_description) in multimodal_tasks {
        println!("\n   --- {modality} Processing ---");
        println!("   Task: \"{task_description}\"");

        // Create synthetic multi-modal input
        let text_input =
            Array2::from_shape_vec((1, 8), vec![100, 200, 300, 400, 500, 600, 700, 800])?;

        // Enable all quantum capabilities for multi-modal processing
        let output = model.forward(&text_input, None, true, true)?;

        println!("   Multi-modal output shape: {:?}", output.dim());

        // Analyze multi-modal integration
        let integration_quality = evaluate_multimodal_integration(&output, modality)?;
        println!("   Integration metrics:");
        println!(
            "   - Cross-modal coherence: {:.3}",
            integration_quality.coherence
        );
        println!(
            "   - Information fusion: {:.3}",
            integration_quality.fusion_quality
        );
        println!(
            "   - Quantum entanglement: {:.3}",
            integration_quality.quantum_entanglement
        );

        // Test specific capabilities based on modality
        match modality {
            "Text + Quantum Data" => {
                let quantum_analysis = analyze_quantum_data_processing(&output)?;
                println!(
                    "   - Quantum state recognition: {:.3}",
                    quantum_analysis.state_recognition
                );
                println!(
                    "   - Measurement prediction: {:.3}",
                    quantum_analysis.measurement_prediction
                );
            }
            "Text + Mathematical" => {
                let math_analysis = analyze_mathematical_reasoning(&output)?;
                println!(
                    "   - Equation understanding: {:.3}",
                    math_analysis.equation_understanding
                );
                println!(
                    "   - Symbol manipulation: {:.3}",
                    math_analysis.symbol_manipulation
                );
            }
            "Text + Logical" => {
                let logic_analysis = analyze_logical_processing(&output)?;
                println!("   - Logical validity: {:.3}", logic_analysis.validity);
                println!(
                    "   - Inference quality: {:.3}",
                    logic_analysis.inference_quality
                );
            }
            "Text + Memory" => {
                let memory_analysis = analyze_memory_retrieval(&output)?;
                println!("   - Memory accuracy: {:.3}", memory_analysis.accuracy);
                println!(
                    "   - Retrieval efficiency: {:.3}",
                    memory_analysis.efficiency
                );
            }
            _ => {}
        }
    }

    Ok(())
}

/// Demonstrate performance analysis and quantum advantage
fn performance_analysis_demo() -> Result<()> {
    println!("   Analyzing performance and quantum advantage...");

    // Create models of different scales
    let small_config = QuantumLLMConfig::small(10000);
    let medium_config = QuantumLLMConfig::medium(20000);
    let large_config = QuantumLLMConfig::large(50000);

    let small_model = QuantumLLM::new(small_config)?;
    let medium_model = QuantumLLM::new(medium_config)?;
    let large_model = QuantumLLM::new(large_config)?;

    let models = vec![
        ("Small", &small_model),
        ("Medium", &medium_model),
        ("Large", &large_model),
    ];

    println!("\n   Model Comparison:");

    for (name, model) in &models {
        let config = model.config();
        let params = model.num_parameters();

        println!("   {name} Model:");
        println!("   - Parameters: {:.1}M", params as f64 / 1_000_000.0);
        println!(
            "   - Model dimension: {}",
            config.transformer_config.model_dim
        );
        println!(
            "   - Quantum qubits: {}",
            config.transformer_config.num_qubits
        );
        println!("   - Memory size: {}", config.memory_config.memory_size);
        println!(
            "   - Reasoning steps: {}",
            config.reasoning_config.reasoning_steps
        );

        // Estimate quantum advantage
        let quantum_advantage = estimate_quantum_advantage(model)?;
        println!("   - Quantum advantage: {:.2}x", quantum_advantage.speedup);
        println!(
            "   - Memory efficiency: {:.2}x",
            quantum_advantage.memory_efficiency
        );
        println!(
            "   - Reasoning enhancement: {:.2}x",
            quantum_advantage.reasoning_enhancement
        );
    }

    // Performance benchmarks
    println!("\n   Performance Benchmarks:");

    let benchmark_tasks: Vec<(&str, fn(&QuantumLLM) -> Result<PerformanceMetrics>)> = vec![
        ("Text Generation", measure_generation_performance),
        ("Language Understanding", measure_understanding_performance),
        ("Reasoning Tasks", measure_reasoning_performance),
        ("Memory Operations", measure_memory_performance),
    ];

    for (task_name, benchmark_fn) in benchmark_tasks {
        println!("\n   {task_name} Benchmark:");

        for (model_name, model) in &models {
            let performance = benchmark_fn(model)?;
            println!(
                "   {} Model: {:.2} ops/sec, {:.1} MB memory",
                model_name, performance.operations_per_sec, performance.memory_usage_mb
            );
        }
    }

    // Quantum scaling analysis
    println!("\n   Quantum Scaling Analysis:");
    let scaling_analysis = analyze_quantum_scaling(&models)?;
    println!(
        "   - Parameter scaling: {:.2} (vs {:.2} classical)",
        scaling_analysis.quantum_scaling, scaling_analysis.classical_scaling
    );
    println!(
        "   - Performance scaling: {:.2}",
        scaling_analysis.performance_scaling
    );
    println!(
        "   - Quantum efficiency: {:.1}%",
        scaling_analysis.efficiency * 100.0
    );

    // Future projections
    println!("\n   Future Projections:");
    println!(
        "   - 100B parameter QLLM estimated efficiency: {:.2}x classical",
        project_future_efficiency(100_000_000_000)
    );
    println!(
        "   - Quantum coherence preservation: {:.1}%",
        project_coherence_preservation() * 100.0
    );
    println!(
        "   - Reasoning capability enhancement: {:.2}x",
        project_reasoning_enhancement()
    );

    Ok(())
}

Trait Implementations

impl Clone for QuantumLLMConfig

fn clone(&self) -> QuantumLLMConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QuantumLLMConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.