Chao Li

LTSV: Layered Type-Constrained Shapley Value for Heterogeneous Graph Data Valuation

Data valuation is essential for quantifying data worth in machine learning, especially in multi-party collaborations where incentives rely on fair contribution attribution. Although Shapley-value-based methods are effective for I.I.D. data, extending them to heterogeneous graphs remains challenging due to type-dependen...