用反事实方法快速评估拍卖策略,减少实验成本与时间
Off-Policy Evaluation and Counterfactual Methods in Dynamic Auction Environments
- 基于已记录数据使用反事实估计器评估新策略
- 可提前预测资源分配策略效果,提升决策效率
- 适合需要快速优化策略的在线拍卖系统研究者
反事实估计器在利用日志数据学习和优化策略的离线策略评估(OPE)中至关重要。OPE使研究人员无需进行昂贵的实验即可评估新策略,加速评估流程。在线实验方法如A/B测试虽有效,但通常耗时较长,延迟策略选择与优化进程。本文探讨了OPE方法在动态拍卖环境中资源分配的应用。鉴于此类环境竞争激烈且需快速决策以获得竞争优势,快速准确评估算法性能极为关键。通过在开展A/B测试前使用反事实估计器作为预评估步骤,我们旨在简化评估流程,降低实验的时间与资源消耗,并增强对所选策略的信心。研究聚焦于利用这些估计器预测潜在资源分配策略的结果、评估其表现,并支持更明智的策略选择。基于初步研究结果,我们设想构建一个先进分析系统,能够无缝、动态地评估新的资源分配策略与政策。
原文摘要 · Abstract (English)
Counterfactual estimators are critical for learning and refining policies using logged data, a process known as Off-Policy Evaluation (OPE). OPE allows researchers to assess new policies without costly experiments, speeding up the evaluation process. Online experimental methods, such as A/B tests, are effective but often slow, thus delaying the policy selection and optimization process. In this work, we explore the application of OPE methods in the context of resource allocation in dynamic auction environments. Given the competitive nature of environments where rapid decision-making is crucial for gaining a competitive edge, the ability to quickly and accurately assess algorithmic performance is essential. By utilizing counterfactual estimators as a preliminary step before conducting A/B tests, we aim to streamline the evaluation process, reduce the time and resources required for experimentation, and enhance confidence in the chosen policies. Our investigation focuses on the feasibility and effectiveness of using these estimators to predict the outcomes of potential resource allocation strategies, evaluate their performance, and facilitate more informed decision-making in policy selection. Motivated by the outcomes of our initial study, we envision an advanced analytics system designed to seamlessly and dynamically assess new resource allocation strategies and policies.
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