New User Event Prediction Through the Lens of Causal Inference

• URL: http://arxiv.org/abs/2407.05625v2
• Date: Wed, 10 Jul 2024 20:44:39 GMT
• Title: New User Event Prediction Through the Lens of Causal Inference
• Authors: Henry Shaowu Yuchi, Shixiang Zhu, Li Dong, Yigit M. Arisoy, Matthew C. Spencer,
• Abstract summary: We propose a novel discrete event prediction framework for new users. Our method offers an unbiased prediction for new users without needing to know their categories. We demonstrate the superior performance of the proposed framework with a numerical simulation study and two real-world applications.
• Score: 20.676353189313737
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Modeling and analysis for event series generated by heterogeneous users of various behavioral patterns are closely involved in our daily lives, including credit card fraud detection, online platform user recommendation, and social network analysis. The most commonly adopted approach to this task is to classify users into behavior-based categories and analyze each of them separately. However, this approach requires extensive data to fully understand user behavior, presenting challenges in modeling newcomers without historical knowledge. In this paper, we propose a novel discrete event prediction framework for new users through the lens of causal inference. Our method offers an unbiased prediction for new users without needing to know their categories. We treat the user event history as the ''treatment'' for future events and the user category as the key confounder. Thus, the prediction problem can be framed as counterfactual outcome estimation, with the new user model trained on an adjusted dataset where each event is re-weighted by its inverse propensity score. We demonstrate the superior performance of the proposed framework with a numerical simulation study and two real-world applications, including Netflix rating prediction and seller contact prediction for customer support at Amazon.

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