Author

Wei Zhang

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Jul 2026

Do Agent Benchmarks Measure Capability? Protocol Validity in the Age of Agentic AI

Agent benchmarks increasingly evaluate repository editing, web research, terminal use, and long-horizon interaction. Their scores support capability claims only when the evaluation protocol keeps the intended capability necessary for success. Recent reward-hacking benchmarks and system reports show that agents can inst...

Jia-Qi Shao, Hanck Chen, Wei Zhang et al. · arXiv.org · 4 citations

Preprint Jul 2026

Stochastic Reset Pathfinding: Path-Level Regret for Cascading Bandits over Graph Paths

A path-level regret bound for PathUCB that decomposes regret over suboptimal paths via a per-path complexity C(pi) combining each edge's prefix and suffix reliability, complementary to the edge-level CCB bound and more informative on structured graphs with polynomially many source-to-goal paths.

Guni Sharon, Wei Zhang · 0 citations