Author

Mingxuan Li

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Jul 2026

Counterfactual Shapley Credit Assignment

Counterfactual Shapley Credit Assignment is introduced, a novel framework grounded in causal theory that attributes credit and blame via the Counterfactual Shapley Value ($\phi$-value) to enhance temporal credit assignment across three critical dimensions: sparse causality, high stochasticity, and delayed rewards, all...

Mingxuan Li, Kai-Zhan Lee, E. Bareinboim · arXiv.org · 0 citations

Preprint Aug 2026

Don't Solve, Just Compare: Tiny Advisors for Runtime Intervention in LLM Agents

Comparison-Only Tiny Advisor (COTA), a comparison-only framework for constructive runtime intervention that shows that constructive runtime intervention can remain effective even when the auxiliary model has substantially weaker task-solving capability than the actor.

Yan-Ze Jiang, Mingxuan Li, Yuhao Wang et al. · 2 citations