Improving Sequential Recommender Systems with Online and In-store User Behavior

Luyi Ma; Aashika Padmanabhan; Anjana Ganesh; Shengwei Tang; Jiao Chen; Xiaohan Li; Lalitesh Morishetti; Kaushiki Nag; Malay Patel; Jason Cho; Sushant Kumar; Kannan Achan

arXiv · 2412.02122

Improving Sequential Recommender Systems with Online and In-store User Behavior

Luyi Ma·Aashika Padmanabhan·Anjana Ganesh·Shengwei Tang·Jiao Chen·Xiaohan Li·Lalitesh Morishetti·Kaushiki Nag·Malay Patel·Jason Cho·Sushant Kumar·Kannan Achan

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Abstract

Online e-commerce platforms have been extending in-store shopping, which allows users to keep the canonical online browsing and checkout experience while exploring in-store shopping. However, the growing transition between online and in-store becomes a challenge to sequential recommender systems for future online interaction prediction due to the lack of holistic modeling of hybrid user behaviors (online and in-store). The challenges are twofold. First, combining online and in-store user behavior data into a single data schema and supporting multiple stages in the model life cycle (pre-training, training, inference, etc.) organically needs a new data pipeline design. Second, online recommender systems, which solely rely on online user behavior sequences, must be redesigned to support online and in-store user data as input under the sequential modeling setting. To overcome the first challenge, we propose a hybrid, omnichannel data pipeline to compile online and in-store user behavior data by caching information from diverse data sources. Later, we introduce a model-agnostic encoder module to the sequential recommender system to interpret the user in-store transaction and augment the modeling capacity for better online interaction prediction given the hybrid user behavior.

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Luyi Ma, Aashika Padmanabhan, Anjana Ganesh, Shengwei Tang, Jiao Chen, Xiaohan Li, Lalitesh Morishetti, Kaushiki Nag, Malay Patel, Jason Cho, Sushant Kumar, Kannan Achan. 2024-12-03. Improving Sequential Recommender Systems with Online and In-store User Behavior. https://arxiv.org/abs/2412.02122

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