Axiomatic and Probabilistic Foundations for the Hodge-Theoretic Shapley Value

Tongseok Lim

Papers from arXiv.org

Abstract: This paper establishes a complete theoretical foundation for the Hodge-theoretic extension of the Shapley value introduced by Stern and Tettenhorst (2019). We show that a set of five axioms--efficiency, linearity, symmetry, a modified null-player condition, and an independency principle--uniquely characterize this value across all coalitions, not just the grand coalition. In parallel, we derive a probabilistic representation interpreting each player's value as the expected cumulative marginal contribution along a random walk on the coalition graph. These dual axiomatic and probabilistic results unify fairness and stochastic interpretation, positioning the Hodge-theoretic value as a canonical generalization of Shapley's framework.

Date: 2021-06, Revised 2025-10
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2106.15094

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