Module relationship_features 

Entity relationship feature computation for fraud detection.

This module provides relationship-based features including:

• Counterparty concentration (Herfindahl index)
• Relationship age and velocity
• Reciprocity (bidirectional transaction patterns)
• Counterparty risk propagation

Structs

CombinedRelationshipFeatures

Combined relationship and risk features.

CounterpartyRisk

Counterparty risk features for a node.

RelationshipFeatureConfig

Configuration for relationship feature computation.

RelationshipFeatures

Relationship features for a node.

Functions

compute_all_combined_features

Computes combined features for all nodes.

compute_all_counterparty_risk

Computes counterparty risk for all nodes in a graph.

compute_all_relationship_features

Computes relationship features for all nodes in a graph.

compute_counterparty_risk

Computes counterparty risk features for a node.

compute_relationship_features

Computes relationship features for a single node.