Speaker: Evangelos (Vagelis) Papalexakis
Affiliation: University of California Riverside
Time: June 10, 2025 - 13:40 to 14:15
Title: It's all about the latent structure: Tensor and graph methods for actionable
insights
Abstract
Tensors and graphs have been essential tools in expressing complex relations in data. Of particular
interest are tensor and graph mining methods that allow us to uncover the latent structure of the data,
and as a result produce interpretable representations of the data that can be used for a number of
downstream tasks and for generating actionable insights.
In this talk, we will first explore how tensor methods can supercharge graph and data mining, by showing
exciting examples including community detection. Subsequently, we are going to present novel
self-supervised graph representation learning methods which rely on uncovering the latent structure of
the data in achieving high performance and speedup over existing state of the art. Finally, if time
allows, we are going to briefly discuss fascinating connections between latent structure recovery and
robustness of deep learning models.
Speaker Bio
Evangelos (Vagelis) Papalexakis is an Associate Professor and the Ross Family Chair of the CSE Dept. at
University of California Riverside. He received his PhD degree at the School of Computer Science at
Carnegie Mellon University (CMU). Prior to CMU, he obtained his Diploma and MSc in Electronic & Computer
Engineering at the Technical University of Crete, in Greece. Broadly, his research interests span the
fields of Data Science, Machine Learning, Artificial Intelligence, and Signal Processing.
His research involves designing interpretable models and scalable algorithms for extracting knowledge
from large multi-aspect datasets, with specific emphasis on tensor factorization models, and applying
those algorithms to a variety of real-world problems, including AI for Science, explainable AI,
gravitational wave detection, cybersecurity, transportation and railway safety, and precision
agriculture.
He is heavily involved in the data science research community with extensive experience in conference
organization, including organizing a workshop at ACM SIGKDD 2019 on "Tensor Methods for Emerging Data
Science Problems", being the Deep Learning Day Co-Chair for ACM SIGKDD 2019, the Doctoral Forum Co-Chair
for SIAM SDM 2021, the Demos Co-Chair for ACM WSDM 2022, the Program Co-Chair for SIAM SDM 2022, and the
General Co-Chair for SIAM SDM 2024 and SIAM SDM 2025.
His work has appeared in top-tier conferences and journals, and has attracted a number of distinctions,
including the 2017 SIGKDD Dissertation Award (runner-up), a number of paper awards, the National Science
Foundation CAREER award, the 2021 IEEE DSAA Next Generation Data Scientist Award, the 2022 IEEE Signal
Processing Society Donald G. Fink Overview Paper Award, and the IEEE ICDM 2022 Tao Li Award and 2025
PAKDD Early Career Research Award, both of which award excellence in early-career researchers in data
mining.