Towards High-Order Complementary Recommendation via Logical Reasoning Network
This work addresses the need for better product recommendations in e-commerce by enabling more accurate and comprehensive complementary suggestions, though it is incremental as it builds on existing embedding and reasoning methods.
The paper tackles the problem of complementary recommendation in e-commerce by proposing LOGIREC, a logical reasoning network that learns product embeddings and transformations to capture asymmetric and high-order relationships, achieving improved ranking metrics on real-world datasets.
Complementary recommendation gains increasing attention in e-commerce since it expedites the process of finding frequently-bought-with products for users in their shopping journey. Therefore, learning the product representation that can reflect this complementary relationship plays a central role in modern recommender systems. In this work, we propose a logical reasoning network, LOGIREC, to effectively learn embeddings of products as well as various transformations (projection, intersection, negation) between them. LOGIREC is capable of capturing the asymmetric complementary relationship between products and seamlessly extending to high-order recommendations where more comprehensive and meaningful complementary relationship is learned for a query set of products. Finally, we further propose a hybrid network that is jointly optimized for learning a more generic product representation. We demonstrate the effectiveness of our LOGIREC on multiple public real-world datasets in terms of various ranking-based metrics under both low-order and high-order recommendation scenarios.