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EXACT COALITION ATTRIBUTION

Exact Shapley Attribution Lab

Define a value function, enumerate every coalition, and verify exactly how the baseline-to-observed change is allocated across up to 10 features.

Reviewed 2026-07-09

Data
All 2^M coalitionsExact factorial weightsOracle invariantsSHA-256 artifacts

WHAT THIS TOOL DOES

Exact Shapley Attribution Lab: inputs, outputs and verification

Use it whenShapley value calculator, exact SHAP calculator, feature attribution calculator
You getAn exact attribution packet with one Shapley value per feature, efficiency residual, finite/dummy/symmetry oracle checks, coalition ledger, two SVGs
Verify withJSON proof receipt, CSV, visual artifact, Markdown generated from visible local input

What is verified

Every feature attribution is a stable sum of its weighted marginal contribution across coalitions that exclude that feature. The receipt records the value-function semantics, all oracle outcomes, the efficiency residual and SHA-256 hashes for each non-receipt artifact.

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