From Pareto to Preference: Personalized Test-Time Scaling via Amortized Agentic Policy Discovery
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Computer Science > Computation and Language
arXiv:2610.09684 (cs)
[Submitted on 7 Oct 2026]
Title:From Pareto to Preference: Personalized Test-Time Scaling via Amortized Agentic Policy Discovery
Authors:Xinglin Wang, Zishen Liu, Tong Zheng, Shaoxiong Feng, Peiwen Yuan, Yiwei Li, Jiayi Shi, Yueqi Zhang, Chuyi Tan, Ji Zhang, Boyuan Pan, Kan Li
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Abstract:Test-time scaling (TTS) improves the reasoning capabilities of large language models by allocating additional inference computation. Existing approaches to improving TTS efficiency largely optimize accuracy against one resource dimension at a time, advancing either the accuracy--cost or accuracy--latency Pareto frontier. Yet user requirements are multidimensional: users may specify accuracy, latency, and inference-cost requirements jointly, and different requirements can favor different controllers. We formulate Personalized Test-Time Scaling as discovering executable controllers that maximize the joint satisfaction rate of user-specific requirements. To reduce the overhead of repeated policy discovery for new user profiles, we propose PersonTTS, an amortized agentic policy-discovery framework that reuses prior search experience through requirement-matched controller initialization and source-distilled procedural guidance, while retaining target-profile evaluation for every candidate. Experiments on AIME and HMMT show that PersonTTS substantially outperforms strong TTS baselines in joint requirement satisfaction on unseen user profiles and held-out problems. Under the same candidate-evaluation budget, cross-user experience reuse further improves policy quality while substantially reducing discovery-agent time and cost.
| Comments: | Preprint |
| Subjects: | Computation and Language (cs.CL); Artificial Intelligence (cs.AI) |
| Cite as: | arXiv:2610.09684 [cs.CL] |
| (or arXiv:2610.09684v1 [cs.CL] for this version) | |
| https://doi.org/10.48550/arXiv.2610.09684
arXiv-issued DOI via DataCite (pending registration)
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View a PDF of the paper titled From Pareto to Preference: Personalized Test-Time Scaling via Amortized Agentic Policy Discovery, by Xinglin Wang and 11 other authors
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