Research

Google Scholar Page

• 
  Lend Me Your Eyes: Instruction-Aware Text Embeddings via Attention Relay

  Yiyuan Luo, Vaggos Chatziafratis

  Preprint 2026

  [Paper][Website][Code]
• 
  Provable Accuracy Collapse of Embedding-Based Representations under Dimensionality Mismatch

  Dionysis Arvanitakis, Vaggos Chatziafratis, Yiyuan Luo

  ICML 2026Spotlight

  [Paper]
• 
  Optimal Phylogenetic Reconstruction from Sampled Quartets

  Dionysis Arvanitakis, Vaggos Chatziafratis, Yiyuan Luo, Konstantin Makarychev

  STOC 2026

  [Paper]
• 
  The Complexity of Finding Local Optima in Contrastive Learning

  Jingming Yan*, Yiyuan Luo*, Vaggos Chatziafratis, Ioannis Panageas, Parnian Shakhar, Stelios Andrew Stavroulakis

  NeurIPS 2025

  [Paper]