arXiv AI By Chubin Zhang, Zhenglin Wan, Xingrui Yu, Jingxuan Wu, Qi Wen, Pengfei Zhou, Wangbo Zhao, Ivor Tsang

Calibration Is Not Control: Intervention Value for LLM-Agent Oversight

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arXiv Machine Learning
Aug 31

TACIT-Switch: Cost-Aware Model Escalation for LLM Agents from Censored Supervision

TACIT-Switch is a cost‑aware routing method that decides when to hand off from a cheaper, smaller language‑model agent to a more expensive, larger one. It learns permanent handoff policies using Teacher‑Annotated Censored Intervention Times (TACIT), treating each annotation as an interval‑censored observation on a cumulative‑risk scale. In controlled simulations, TACIT‑Switch improves success rates by 7.4–11.1 percentage points over other routing baselines while keeping cost comparable, and it achieves the highest held‑out success on ALFWorld and DABench datasets.

By Ji'an Lei, Jian Huang
arXiv AI
Sep 23

Self-Healing Harness for Runtime Oversight of Agent Self-Modification

The paper introduces a self‑healing harness that enforces admission control over language‑model agents’ self‑modifications. The harness runs a Detect‑Notice‑Heal‑Validate loop, allowing agents to propose rule changes that are only granted persistent authority after demonstrating improvement on a failure case without regressing on protected cases. Across 16 benchmark runs, the harness rejected many locally beneficial proposals that caused collateral regressions, while improving task‑completion scores and reliability.

By Sina Tayebati, Divake Kumar, Nastaran Darabi, Ranganath Krishnan, Amit Ranjan Trivedi