论文标题
大规模目标广告系统的多态学习
Multi-Manifold Learning for Large-scale Targeted Advertising System
论文作者
论文摘要
Messenger广告(ADS)提供直接和个人用户体验,产生高转换率和销售量。但是,人们对广告持怀疑态度,有时将它们视为垃圾邮件,最终导致用户满意度下降。有针对性的广告为可能对特定广告信息表现出兴趣的个人提供广告。精确用户目标成功的关键在于学习嵌入空间中准确的用户和广告表示。以前的大多数研究都限制了欧几里得领域的表示形式学习,但是最近的研究表明,双曲线歧管学习是针对从社交网络,推荐系统和广告等现实世界数据集中出现的复杂网络属性的明显投影。我们提出了一个框架,该框架可以有效地学习用户和广告空间中的广告的层次结构,并扩展到多态学习。我们的方法构建了具有可学习的曲线的多个双曲线歧管,并将用户和AD的表示形式映射到每个歧管。每个歧管的起源设置为每个用户群集的质心。使用双曲线空间中两个实体之间的距离估算每个AD的用户偏好,并且最终预测是通过汇总从学习的多个歧管计算的值来确定的。我们在公共基准数据集和大规模商业信使系统系列上评估了我们的方法,并通过提高性能来证明其有效性。
Messenger advertisements (ads) give direct and personal user experience yielding high conversion rates and sales. However, people are skeptical about ads and sometimes perceive them as spam, which eventually leads to a decrease in user satisfaction. Targeted advertising, which serves ads to individuals who may exhibit interest in a particular advertising message, is strongly required. The key to the success of precise user targeting lies in learning the accurate user and ad representation in the embedding space. Most of the previous studies have limited the representation learning in the Euclidean space, but recent studies have suggested hyperbolic manifold learning for the distinct projection of complex network properties emerging from real-world datasets such as social networks, recommender systems, and advertising. We propose a framework that can effectively learn the hierarchical structure in users and ads on the hyperbolic space, and extend to the Multi-Manifold Learning. Our method constructs multiple hyperbolic manifolds with learnable curvatures and maps the representation of user and ad to each manifold. The origin of each manifold is set as the centroid of each user cluster. The user preference for each ad is estimated using the distance between two entities in the hyperbolic space, and the final prediction is determined by aggregating the values calculated from the learned multiple manifolds. We evaluate our method on public benchmark datasets and a large-scale commercial messenger system LINE, and demonstrate its effectiveness through improved performance.