All Stories

  1. When Hard Negatives Hurt: Bridging the Generative Discriminative Gap in Hard Negative Synthesis for Retrieval

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

    Zhicheng Zhang

  2. ROMA: Recommendation-Oriented Language Model Adaptation Using Multi-Modal Multi-Domain Item Sequences

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

    Zhicheng Zhang

  3. Joint Auction in the Online Advertising Market

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

    Zhen Zhang, Zhicheng Zhang