Multiple papers accepted at top venues including NeurIPS 2025, KDD 2025, JMLR, TMLR, AAAI/ACM AIES, SIGSPATIAL 2025, SIAM SDM 2025, AutoML 2024, IEEE BigData 2023, etc.
Research topics include foundation models for zero-shot tabular outlier detection, discrete diffusion, synthetic mixed-prior pretraining for tabular FMs, human mobility anomaly detection, image anomaly detection with self-supervision, GPS trajectory anomaly detection, self-supervised time series OD, and algorithmic bias in OD models
Invited keynote speaker at International Conference on Automated Machine Learning (AutoML) 2024
Invited speaker at GraphEx Symposium, Fields Conference on Complex Networks in Banking and Finance (2024)
Frequent invited speaker at international workshops and schools (2022–2023), including PFIA, Toronto Metropolitan University, and ISI Kolkata Winter School
Work on detecting upcoding-driven waste in Medicare claims accepted to Journal of Policy Analysis and Management (2025)
Background
Dean's Associate Professor (tenured) at Heinz College of Information Systems and Public Policy, Carnegie Mellon University
Holds courtesy appointments in the Machine Learning Department (MLD) and Computer Science Department (CSD), School of Computer Science
Directs the Data Analytics Techniques Algorithms (DATA) Lab at Heinz College
Research interests broadly span data mining, graph mining, machine learning, and knowledge discovery
Specific focus on anomaly detection ('anOmaLiEs')—identifying and characterizing outliers in large-scale, time-varying, multi-modal data using scalable computational methods