cs.AI 2605.12474

Reward Hacking in Rubric-Based Reinforcement Learning

The study proposes a framework to diagnose reward hacking in rubric-based RL, finding that even strong verification does not eliminate reward hacking.

Anas Mahmoud, MohammadHossein Rezaei, Zihao Wang et al.

2026-05-13 447
cs.AI 2605.12294

Executable Agentic Memory for GUI Agent

Proposes Executable Agentic Memory (EAM) using knowledge graphs to enhance long-horizon GUI planning, achieving 19.6% success improvement and 6× cost reduction.

Zerui Qin, Sheng Yue, Xingyuan Hua et al.

2026-05-12 43
cs.AI 2605.09163

FORTIS: Benchmarking Over-Privilege in Agent Skills

FORTIS benchmark quantifies over-privilege in large models' skill selection and execution, with failure rates exceeding 62.5%, revealing systemic permission control issues.

Shawn Li, Chenxiao Yu, Han Wang et al.

2026-05-10 7 citations 74
cs.AI 2605.23950

Stop Comparing LLM Agents Without Disclosing the Harness

Proposes 'Binding Constraint Thesis', showing scheduler configuration impacts long-horizon LLM performance more than model upgrades, advocating for disclosure.

Yunbei Zhang, Janet Wang, Yingqiang Ge et al.

2026-05-07 61