arXiv Computation and Language

From Pareto to Preference: Personalized Test-Time Scaling via Amortized Agentic Policy Discovery

The paper introduces PersonTTS, an amortized agentic policy-discovery framework for personalized test-time scaling (TTS) of large language models. PersonTTS aims to maximize the joint satisfaction of user-specified accuracy, latency, and inference-cost requirements by reusing prior search experience through requirement-matched controller initialization and source-distilled procedural guidance. Experiments on AIME and HMMT datasets demonstrate that PersonTTS outperforms strong TTS baselines in joint requirement satisfaction on unseen user profiles and reduces discovery-agent time and cost.

arXiv AI
Aug 18

Budget-Aware Tool Use Enables Effective Agent Scaling

arXiv:2511. 17006v2 Announce Type: replace Abstract: Scaling test-time computation has been extended from language model reasoning to tool-augmented agents, where scaling involves not only thinking in tokens but also acting via tool calls that directly constrain environmental interaction.

By Tengxiao Liu, Zifeng Wang, Jin Miao, I-Hung Hsu, Jun Yan, Jiefeng Chen, Rujun Han, Fangyuan Xu, Yanfei Chen, Ke Jiang, Samira Daruki, Yi Liang, William Yang Wang, Tomas Pfister, Chen-Yu Lee
arXiv AI
Sep 10

Less Is Personal: Learning Minimal Sufficient User Profiles for Personalized Language Models

The paper introduces ENOUGH, a method for creating minimal sufficient user profiles for personalized language models. ENOUGH iteratively adds behavioral records or stops, evaluating profile prefixes with a counterfactual search that balances downstream gains, user specificity, and token costs. The resulting profiles are distilled into a lightweight controller that orders records and triggers the generator only once, achieving better effectiveness and efficiency than existing baselines across six tasks.

By Minghang Liu, Qiang Qiu, Yuanzhuo Wang, Huawei Shen, Xueqi Cheng
arXiv AI
Jul 23

Personalized Recommendation Tool Learning via Autonomous Language Agents

arXiv:2607. 19739v1 Announce Type: cross Abstract: Although large language models (LLMs) have recently gained traction in recommender systems due to their strong reasoning capabilities and extensive world knowledge, previous LLM-based agents suffer from hallucination and context-length limitations, and thus are not suitable for full-ranking recommendation tasks.

By Mingdai Yang, Zhiwei Liu, Weizhi Zhang, Yibo Wang, Hao Peng, Philip Yu
arXiv AI
Aug 12

UserToolBench: A User-Profile-Hidden Benchmark for Personalized Decision Making in Tool-Use LLMs

arXiv:2608. 10042v1 Announce Type: cross Abstract: Tool-use LLMs are increasingly asked to act on users' behalf, but existing benchmarks usually focus on profile recall, style imitation, generic tool use, or response-level personalization.

By Xuexiong Yin, Zechuan Chen, Yongsen Zheng, Yuxiang Zhang, Jingyuan Yang, Bin Wang, Yubin Wang, Keze Wang