All Stories

  1. Differentiable Semantic ID for Generative Recommendation

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

    Alexandros Karatzoglou, Junchen Fu

  2. The 1st EReL@MIR Workshop on Efficient Representation Learning for Multimodal Information Retrieval

    Article • May 2025, ACM (Association for Computing Machinery)

    Junchen Fu, Alexandros Karatzoglou

  3. Large Language Model driven Policy Exploration for Recommender Systems

    Article • March 2025, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  4. Sparks of Surprise: Multi-objective Recommendations with Hierarchical Decision Transformers for Diversity, Novelty, and Serendipity

    Article • October 2024, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  5. Reinforcement Learning-based Recommender Systems with Large Language Models for State Reward and Action Modeling

    Article • July 2024, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  6. IISAN: Efficiently Adapting Multimodal Representation for Sequential Recommendation with Decoupled PEFT

    Article • July 2024, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou, Junchen Fu

  7. Enhancing Top-N Item Recommendations by Peer Collaboration

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

    Alexandros Karatzoglou, Xiaoyan Zhao

  8. Rethinking Reinforcement Learning for Recommendation

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

    Alexandros Karatzoglou

  9. Disentangling Preference Representations for Recommendation Critiquing with ß-VAE

    Article • October 2021, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  10. One Person, One Model, One World

    Article • July 2021, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  11. Self-Supervised Reinforcement Learning for Recommender Systems

    Article • July 2020, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  12. Parameter-Efficient Transfer from Sequential Behaviors for User Modeling and Recommendation

    Article • July 2020, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  13. Deep Learning for Recommender Systems

    Article • August 2017, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  14. Question recommendation for collaborative question answering systems with RankSLDA

    Article • January 2014, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  15. Collaborative temporal order modeling

    Article • January 2011, ACM (Association for Computing Machinery)

    Alexandros Karatzoglou

  16. Collaborative Preference Learning

    Article • January 2010, Springer Science + Business Media

    Alexandros Karatzoglou