Toward User-Conditioned Evaluation of Personal LLM Agents under Temporal Interventions
This paper argues that personal-agent evaluation requires a new protocol: replaying the same temporal intervention across different persistent user-conditioned states and measuring how failures propagate. The authors formalize four conditions, audit existing benchmarks, and find no protocol meeting all conditions. They propose a minimal benchmark design and candidate reporting metrics.
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[Submitted on 20 Jul 2026]
Title:Toward User-Conditioned Evaluation of Personal LLM Agents under Temporal Interventions
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Abstract:Personal agents maintain memories, learned skills, tool configurations, and policy state that evolve with each user. Existing agent benchmarks often evaluate these capabilities in isolation: tool benchmarks test invocation under fixed APIs, memory benchmarks test recall or forgetting, and safety benchmarks test static policy compliance. We argue that personal-agent evaluation requires a different protocol: replaying the same temporal intervention across different persistent user-conditioned states and measuring how failures propagate across agent components. We formalize this requirement as four conditions: explicit temporal intervention, persistent state across the intervention, induced cross-dimensional effects, and variation in user-conditioned state. A focused audit of public benchmark protocols selected by explicit inclusion criteria identifies several close cases. Under our explicitly narrow operationalization, we did not find a protocol in that audited set satisfying all four conditions. This claim is scoped as a focused gap analysis with bounded literature coverage. This position paper proposes a minimal benchmark design and candidate reporting metrics for user-conditioned adaptation. The result is a concrete design requirement for future personal-agent evaluation, with metrics used as reporting tools for that requirement.
Comments: 9 pages, 2 figures, and 8 tables. Accepted for oral presentation at the ACM SIGKDD KDD 2026 Workshop on Personal Intelligence in the Agentic AI Era (PILA 2026)
Subjects:
Machine Learning (cs.LG)
Cite as: arXiv:2607.21635 [cs.LG]
(or arXiv:2607.21635v1 [cs.LG] for this version)
https://doi.org/10.48550/arXiv.2607.21635
arXiv-issued DOI via DataCite
Submission history
From: Pin Qian [view email] [v1] Mon, 20 Jul 2026 23:14:36 UTC (176 KB)
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