arXiv 2610.30932 · cs.IR · 2026-10-22
UserArena: Benchmarking Interactive User Simulation for Long-Horizon Shopping Agents
Jujia Zhao, Jiakai Tang, Jing Yu, Wen Chen, Jian Wu, Han Zhu, Fei Sun, Suzan Verberne 等 9 人
alibaba
一句话要点
UserArena 构建了包含6.4万条真实购物会话的基准数据集,结合交互环境支持多层级评估,并提出OPTD方法提升模拟器在长周期交互中的拟真度。
UserArena introduces a real-world interactive shopping benchmark with 64k trajectories and proposes OPTD to enhance simulator fidelity in long-horizon interactions.
要点
- 现有购物推荐评估资源缺乏长期、细粒度的真实用户行为轨迹,难以支持复杂交互场景下的有效评测。
- UserArena 提供了6.4万条来自1.1万名用户的会话轨迹,涵盖13种动作类型和56.6万个商品,支持从局部决策到最终结果的多层级评估。
- 提出On-Policy Trajectory Distillation (OPTD) 方法,利用轨迹级意图为学生策略生成密集的教师目标,显著提升了长周期交互中模拟器的拟真度。
- 实验表明,OPTD在UserArena评测协议下表现最优,最贴近真实生产环境A/B测试中的策略效果,验证了其在仿真真实性上的优势。
English overview
UserArena presents a real-world interactive shopping benchmark with long-horizon, fine-grained user trajectories from e-commerce sessions. It enables multi-level evaluation of agent behavior and introduces On-Policy Trajectory Distillation (OPTD) to improve simulator fidelity by aligning student rollouts with trajectory-level intent. Experiments show OPTD achieves the highest fidelity and best reproduction of production policy outcomes.
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数据说明
元数据来自 arXiv API(已核实);点赞来自 Hugging Face 每日论文;引用来自 Semantic Scholar。最近刷新 2026-10-22。
要点由本站根据摘要自写,不转载摘要原文,请阅读原文。