arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2202.11525cs.IRcs.LG
收藏

GIFT:用于冷启动视频点击率预测的Graph-guIded特征传递

GIFT: Graph-guIded Feature Transfer for Cold-Start Video Click-Through Rate Prediction

Alibaba Group(阿里巴巴集团);Zhejiang University(浙江大学)

Sihao Hu, Yi Cao, Yu Gong, Zhao Li, Yazheng Yang, Qingwen Liu, Shouling Ji

摘要:

短视频在过去几年中在淘宝等电子商务平台上快速增长。为了保证内容的新鲜度,平台每天都需要发布大量的新视频,这使得传统的点击率(CTR)预测方法受到项目冷启动问题的困扰。在本文中,我们提出了GIFT,一个有效的图形引导的特征转移系统,充分利用丰富的信息预热视频,以补偿冷启动的。具体来说,我们建立了一个异构的图形,包含物理和语义的联系,以指导功能转移过程中,从热身视频冷启动视频。物理链接表示明确的关系,而语义链接测量两个视频的多模态表示的接近度。我们精心设计了特征传递函数,以了解不同类型的传递特征(例如,ID表示和历史统计)。我们在一个大的真实数据集上进行了大量的实验,结果表明,我们的GIFT系统显著优于SOTA方法,并在淘宝App的主页上带来了6.82%的点击率提升。

英文摘要:

Short video has witnessed rapid growth in the past few years in e-commerce platforms like Taobao. To ensure the freshness of the content, platforms need to release a large number of new videos every day, making conventional click-through rate (CTR) prediction methods suffer from the item cold-start problem. In this paper, we propose GIFT, an efficient Graph-guIded Feature Transfer system, to fully take advantages of the rich information of warmed-up videos to compensate for the cold-start ones. Specifically, we establish a heterogeneous graph that contains physical and semantic linkages to guide the feature transfer process from warmed-up video to cold-start videos. The physical linkages represent explicit relationships, while the semantic linkages measure the proximity of multi-modal representations of two videos. We elaborately design the feature transfer function to make aware of different types of transferred features (e.g., id representations and historical statistics) from different metapaths on the graph. We conduct extensive experiments on a large real-world dataset, and the results show that our GIFT system outperforms SOTA methods significantly and brings a 6.82% lift on CTR in the homepage of Taobao App.

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。

↑