Modeling and Analyzing the Influence of Non-Item Pages on Sequential Next-Item Prediction

• URL: http://arxiv.org/abs/2408.15953v2
• Date: Thu, 26 Sep 2024 10:22:34 GMT
• Title: Modeling and Analyzing the Influence of Non-Item Pages on Sequential Next-Item Prediction
• Authors: Elisabeth Fischer, Albin Zehe, Andreas Hotho, Daniel Schlör,
• Abstract summary: We show how to include non-item pages in sequential recommendation models. We adapt popular sequential recommender models to integrate non-item pages. Our results show that non-item pages are a valuable source of information.
• Score: 2.464194460689648
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Analyzing sequences of interactions between users and items, sequential recommendation models can learn user intent and make predictions about the next item. Next to item interactions, most systems also have interactions with what we call non-item pages: these pages are not related to specific items but still can provide insights of the user's interests, as, for example, navigation pages. We therefore propose a general way to include these non-item pages in sequential recommendation models to enhance next-item prediction. First, we demonstrate the influence of non-item pages on following interactions with the hypotheses testing framework HypTrails and propose methods for representing non-item pages in sequential recommendation models. Subsequently, we adapt popular sequential recommender models to integrate non-item pages and investigate their performance with different item representation strategies as well as their ability to handle noisy data. To show the general capabilities of the models to integrate non-item pages, we create a synthetic dataset for a controlled setting and then evaluate the improvements from including non-item pages on two real-world datasets. Our results show that non-item pages are a valuable source of information, and incorporating them in sequential recommendation models increases the performance of next-item prediction across all analyzed model architectures.

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