Struct ContinualMetaLearner 

pub struct ContinualMetaLearner { /* private fields */ }

Continual meta-learning with memory

Implementations

impl ContinualMetaLearner

pub fn new( meta_learner: QuantumMetaLearner, memory_capacity: usize, replay_ratio: f64, ) -> Self

Create new continual meta-learner

Examples found in repository

examples/quantum_meta_learning.rs (lines 319-323)

fn continual_meta_learning_demo() -> Result<()> {
    let layers = vec![
        QNNLayerType::EncodingLayer { num_features: 4 },
        QNNLayerType::VariationalLayer { num_params: 8 },
        QNNLayerType::MeasurementLayer {
            measurement_basis: "computational".to_string(),
        },
    ];

    let qnn = QuantumNeuralNetwork::new(layers, 4, 4, 2)?;

    let algorithm = MetaLearningAlgorithm::Reptile {
        inner_steps: 5,
        inner_lr: 0.05,
    };

    let meta_learner = QuantumMetaLearner::new(algorithm, qnn);
    let mut continual_learner = ContinualMetaLearner::new(
        meta_learner,
        10,  // memory capacity
        0.3, // replay ratio
    );

    println!("   Created Continual Meta-Learner:");
    println!("   - Memory capacity: 10 tasks");
    println!("   - Replay ratio: 30%");

    // Generate sequence of tasks
    let generator = TaskGenerator::new(4, 2);

    println!("\n   Learning sequence of tasks...");
    for i in 0..20 {
        let task = if i < 10 {
            generator.generate_rotation_task(30)
        } else {
            generator.generate_sinusoid_task(30)
        };

        continual_learner.learn_task(task)?;

        if i % 5 == 4 {
            println!(
                "   Learned {} tasks, memory contains {} unique tasks",
                i + 1,
                continual_learner.memory_buffer_len()
            );
        }
    }

    println!("\n   Continual learning prevents catastrophic forgetting");

    Ok(())
}

pub fn learn_task(&mut self, new_task: MetaTask) -> Result<()>

Learn new task while preserving old knowledge

Examples found in repository

examples/quantum_meta_learning.rs (line 340)

fn continual_meta_learning_demo() -> Result<()> {
    let layers = vec![
        QNNLayerType::EncodingLayer { num_features: 4 },
        QNNLayerType::VariationalLayer { num_params: 8 },
        QNNLayerType::MeasurementLayer {
            measurement_basis: "computational".to_string(),
        },
    ];

    let qnn = QuantumNeuralNetwork::new(layers, 4, 4, 2)?;

    let algorithm = MetaLearningAlgorithm::Reptile {
        inner_steps: 5,
        inner_lr: 0.05,
    };

    let meta_learner = QuantumMetaLearner::new(algorithm, qnn);
    let mut continual_learner = ContinualMetaLearner::new(
        meta_learner,
        10,  // memory capacity
        0.3, // replay ratio
    );

    println!("   Created Continual Meta-Learner:");
    println!("   - Memory capacity: 10 tasks");
    println!("   - Replay ratio: 30%");

    // Generate sequence of tasks
    let generator = TaskGenerator::new(4, 2);

    println!("\n   Learning sequence of tasks...");
    for i in 0..20 {
        let task = if i < 10 {
            generator.generate_rotation_task(30)
        } else {
            generator.generate_sinusoid_task(30)
        };

        continual_learner.learn_task(task)?;

        if i % 5 == 4 {
            println!(
                "   Learned {} tasks, memory contains {} unique tasks",
                i + 1,
                continual_learner.memory_buffer_len()
            );
        }
    }

    println!("\n   Continual learning prevents catastrophic forgetting");

    Ok(())
}

pub fn memory_buffer_len(&self) -> usize

Get memory buffer length

Examples found in repository

examples/quantum_meta_learning.rs (line 346)

fn continual_meta_learning_demo() -> Result<()> {
    let layers = vec![
        QNNLayerType::EncodingLayer { num_features: 4 },
        QNNLayerType::VariationalLayer { num_params: 8 },
        QNNLayerType::MeasurementLayer {
            measurement_basis: "computational".to_string(),
        },
    ];

    let qnn = QuantumNeuralNetwork::new(layers, 4, 4, 2)?;

    let algorithm = MetaLearningAlgorithm::Reptile {
        inner_steps: 5,
        inner_lr: 0.05,
    };

    let meta_learner = QuantumMetaLearner::new(algorithm, qnn);
    let mut continual_learner = ContinualMetaLearner::new(
        meta_learner,
        10,  // memory capacity
        0.3, // replay ratio
    );

    println!("   Created Continual Meta-Learner:");
    println!("   - Memory capacity: 10 tasks");
    println!("   - Replay ratio: 30%");

    // Generate sequence of tasks
    let generator = TaskGenerator::new(4, 2);

    println!("\n   Learning sequence of tasks...");
    for i in 0..20 {
        let task = if i < 10 {
            generator.generate_rotation_task(30)
        } else {
            generator.generate_sinusoid_task(30)
        };

        continual_learner.learn_task(task)?;

        if i % 5 == 4 {
            println!(
                "   Learned {} tasks, memory contains {} unique tasks",
                i + 1,
                continual_learner.memory_buffer_len()
            );
        }
    }

    println!("\n   Continual learning prevents catastrophic forgetting");

    Ok(())
}