Publications

Dynamic Clustering with Discrete Time Event Prediction

43rd International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2020)

Published July 27, 2020

Karan Aggarwal, Georgios Theocharous, Anup Rao

Discrete time event sequences from web users are commonly encountered in a variety of real-world domains, from digital marketing to recommender systems. Most of the literature in the area focuses on supervised prediction tasks of the user’s next action or return time. However, little attention has been paid to the challenging task of modeling user evolution and behavior in a quantitative fashion. For example, progress of the users’ knowledge in an online tutorial, user exploration, or engagement. We propose methods to perform a time-varying clustering along with event predictions in a unified domain agnostic framework. Our framework can help track the evolution of the users as they interact with the platform. We evaluate our methods on three real-world datasets and show that our method performs at par with the supervised baseline on the prediction tasks while providing meaningful clusters.


Research Area:  AI & Machine Learning