Fashion outfit recommendation has attracted lots of attention recently. The problem becomes even more interesting and challenging when considering users’ personalized fashion preferences. Although existing works have successfully improved the recommendation accuracy, the efficiency issue of computation and storage is still under-investigated and often ignored. In this paper, we propose a discrete content-based tensor factorization model that maps items and user to binary codes for efficient fashion recommendation. We introduce a probabilistic perspective for learning to hash, where the binary codes are sampled from a set of underlying Bernoulli variables. To demonstrate the effectiveness of our model, we collect a large-scale outfit dataset together with user label information from a fashion-focused social website. Extensive experiments on our dataset show that the proposed model outperforms other state-of-the-art methods.

With the rapid growth of fashion-focused social networks and online shopping, intelligent fashion recommendation is now in great needs. Recommending fashion outfits, each of which is composed of multiple interacted clothing and accessories, is relatively new to the field. The problem becomes even more interesting and challenging when considering users' personalized fashion style. Another challenge in a large-scale fashion outfit recommendation system is the efficiency issue of item/outfit search and storage. In this paper, we propose to learn binary code for efficient personalized fashion outfits recommendation. Our system consists of three components, a feature network for content extraction, a set of type-dependent hashing modules to learn binary codes, and a matching block that conducts pairwise matching. The whole framework is trained in an end-to-end manner. We collect outfit data together with user label information from a fashion-focused social website for the personalized recommendation task. Extensive experiments on our datasets show that the proposed framework outperforms the state-of-the-art methods significantly even with a simple backbone.