All Stories

  1. AlphaOPT: Formulating Optimization Programs with Self-Improving LLM Experience Library

    Article • August 2026, ACM (Association for Computing Machinery)

    Yining Ma, Haris N. Koutsopoulos

  2. Learning Multimodal Embeddings for Traffic Accident Prediction and Causal Estimation

    Article • April 2026, ACM (Association for Computing Machinery)

    Haris N. Koutsopoulos, Ziniu Zhang

  3. Uncertainty Quantification of Sparse Travel Demand Prediction with Spatial-Temporal Graph Neural Networks

    Article • August 2022, ACM (Association for Computing Machinery)

    Haris N. Koutsopoulos

  4. Leveraging Individual and Collective Regularity to Profile and Segment User Locations from Mobile Phone Data

    Article • ACM Transactions on Management Information Systems, June 2021, ACM (Association for Computing Machinery)

    Haris N. Koutsopoulos, Yan Leng