The behavior of users in certain services could be a clue that can be used to infer their preferences and may be used to make recommendations for other services they have never used. However, the cross-domain relationships between items and user consumption patterns are not simple, especially when there are few or no common users and items across domains. To address this problem, we propose a content-based cross-domain recommendation method for cold-start users that does not require user- and item- overlap. We formulate recommendation as extreme multi-class classification where labels (items) corresponding to the users are predicted. With this formulation, the problem is reduced to a domain adaptation setting, in which a classifier trained in the source domain is adapted to the target domain. For this, we construct a neural network that combines an architecture for domain adaptation, Domain Separation Network, with a denoising autoencoder for item representation. We assess the performance of our approach in experiments on a pair of data sets collected from movie and news services of Yahoo! JAPAN and show that our approach outperforms several baseline methods including a cross-domain collaborative filtering method.

提出一种面向冷启动用户的内容为基础的跨领域推荐方法，利用极端多类分类的形式来预测用户对物品的评分标签，构建了一个融合了领域适应的体系结构和去噪自编码器的神经网络，实现了不依赖用户和物品重叠特征，不同领域之间的推荐， 在Yahoo! JAPAN的电影和新闻服务数据集上表现出超过交叉领域协同过滤方法的性能。

基于深度领域适应的跨域推荐