Struct StatisticsUtils 

pub struct StatisticsUtils;

Statistics utilities for metrics collection.

Implementations

impl StatisticsUtils

pub fn compute_statistics(table: &SymbolTable) -> Result<SchemaStatistics>

Compute comprehensive statistics for a symbol table.

Examples

use tensorlogic_adapters::{SymbolTable, DomainInfo, StatisticsUtils};

let mut table = SymbolTable::new();
table.add_domain(DomainInfo::new("Person", 100)).unwrap();

let stats = StatisticsUtils::compute_statistics(&table);
assert!(stats.is_ok());

pub fn total_domain_cardinality(table: &SymbolTable) -> usize

Get total domain cardinality.

Examples

use tensorlogic_adapters::{SymbolTable, DomainInfo, StatisticsUtils};

let mut table = SymbolTable::new();
table.add_domain(DomainInfo::new("Person", 100)).unwrap();
table.add_domain(DomainInfo::new("Organization", 50)).unwrap();

let total = StatisticsUtils::total_domain_cardinality(&table);
assert_eq!(total, 150);

pub fn average_predicate_arity(table: &SymbolTable) -> f64

Get average predicate arity.

Examples

use tensorlogic_adapters::{SymbolTable, DomainInfo, PredicateInfo, StatisticsUtils};

let mut table = SymbolTable::new();
table.add_domain(DomainInfo::new("Person", 100)).unwrap();
table.add_predicate(PredicateInfo::new("knows", vec!["Person".to_string(), "Person".to_string()])).unwrap();
table.add_predicate(PredicateInfo::new("age", vec!["Person".to_string()])).unwrap();

let avg = StatisticsUtils::average_predicate_arity(&table);
assert_eq!(avg, 1.5);

pub fn domain_usage_counts(table: &SymbolTable) -> HashMap<String, usize>

Get domain usage counts.

Examples

use tensorlogic_adapters::{SymbolTable, DomainInfo, PredicateInfo, StatisticsUtils};

let mut table = SymbolTable::new();
table.add_domain(DomainInfo::new("Person", 100)).unwrap();
table.add_predicate(PredicateInfo::new("knows", vec!["Person".to_string(), "Person".to_string()])).unwrap();

let usage = StatisticsUtils::domain_usage_counts(&table);
assert_eq!(usage.get("Person"), Some(&2));