cs.AI 2609.04063

Spurious Advantage Hidden in GRPO

Proposes SIGNBALANCE to eliminate spurious advantage in GRPO, improving math and search task performance.

Jiamian Wang, Samyadeep Basu, Koustava Goswami et al.

2026-09-04 25
cs.AI 2609.02885

Discriminative World Models for Web Agents

Discriminative world models trained via predicted-state matching improve web agent decision-making and task success.

Kelvin Li, Dhruv Pendharkar, Anish Pahilajani et al.

2026-09-03 100
cs.AI 2608.28553

Logos: An Agent Harness on a Cross-Process Bus

Logos extends spatiotemporal composability to multi-process systems using append-only transcripts, ensuring fault tolerance and reversibility.

Hanzhang Jia, Liheng Zeng, Hao Cheng et al.

2026-08-29 161