arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.06167cs.LG
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跟随先知:面对延迟反馈的准确在线转化率预测

Follow the Prophet: Accurate Online Conversion Rate Prediction in the Face of Delayed Feedback

University of Chinese Academy of Sciences(中国科学院大学);Tencent(腾讯)

Haoming Li, Feiyang Pan, Xiang Ao, Zhao Yang, Min Lu, Junwei Pan, Dapeng Liu, Lei Xiao, Qing He

摘要:

延迟反馈问题是在线广告中的迫切挑战之一,这是由从几分钟到几天不等的高度多样化的反馈延迟引起的。对于不同类型的广告和不同的用户,在这些不相同的延迟下,很难设计出合适的在线学习系统。在本文中,我们提出了解决延迟反馈问题的在线广告“跟随先知”(FTP简称)。关键的见解是,如果所有记录的样本的反馈都是即时的,我们可以得到一个没有延迟反馈的模型,即“先知”。虽然先知不能在在线学习,我们表明,我们可以预测先知的预测聚合政策的一组多任务的预测,其中每个任务捕捉不同时期的反馈模式。我们提出了策略的目标和优化方法,并使用日志数据来模拟预测器。在三个真实世界的广告数据集上进行的大量实验表明,我们的方法优于以前的最先进的基线。

英文摘要:

The delayed feedback problem is one of the imperative challenges in online advertising, which is caused by the highly diversified feedback delay of a conversion varying from a few minutes to several days. It is hard to design an appropriate online learning system under these non-identical delay for different types of ads and users. In this paper, we propose to tackle the delayed feedback problem in online advertising by "Following the Prophet" (FTP for short). The key insight is that, if the feedback came instantly for all the logged samples, we could get a model without delayed feedback, namely the "prophet". Although the prophet cannot be obtained during online learning, we show that we could predict the prophet's predictions by an aggregation policy on top of a set of multi-task predictions, where each task captures the feedback patterns of different periods. We propose the objective and optimization approach for the policy, and use the logged data to imitate the prophet. Extensive experiments on three real-world advertising datasets show that our method outperforms the previous state-of-the-art baselines.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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