Monty.Frameworks.Models.EvidenceMatching.FeatureEvidence.Calculator (ExTbpMonty.Core v0.1.0)

How much of a match a node's stored features are — the calculator family.

Mirrors tbp/monty/frameworks/models/evidence_matching/feature_evidence/calculator.py, a module holding a protocol and its default implementation. The Elixir split has the same shape:

• Monty.Frameworks.Models.EvidenceMatching.FeatureEvidence.Calculator.FeatureEvidenceCalculator is the protocol, as a behaviour;
• ...Calculator.DefaultFeatureEvidenceCalculator is the implementation an experiment gets unless it names another.

A calculator is handed the stored features, the observed features and the tolerances, and answers with a score per node. It never touches graph memory: Monty injects the calculator into the hypotheses updater precisely so that scoring can be replaced without touching the search.