My name is Lixin Xiu. I’m currently a first-year doctoral student at Graduate School of Information Science and Technology, the University of Tokyo, and supervised by Prof. Hideki Nakayama. I’m actively finding some research-related internship positions so if you are interested in me, feel free to contact me!

My research topics lie at retrieval techniques (mainly in text-level), semantic representation, and retrieval-augmented generation (RAG). I previously focused on using information-theoretic methods to analyze generative document retrieval quantitively, while my next direction could be related to multimodal applications and retrieval-augmented generation.

Research Interests

• Retrieval Techniques
• Generative Models
• Large Language Models
• Multimodality
• Data Mining
• Clustering

Publications

Xin Du^*, Lixin Xiu^*, Kumiko Tanaka-Ishii,
Bottleneck-Minimal Indexing for Generative Document Retrieval,
In ICML 2024 (Oral), to appear.
^*: Equal Contribution.

Education

1. The University of Tokyo, 2024.10~2027.9 (Expected),
   Doctoral Student at Graduate School of Information Science and Technology.

2. The University of Tokyo, 2022.10~2024.9,
   Master of Information Science and Technology.

3. Xi’an Jiaotong University, 2018.8~2022.7,
   B.E. in Computer Science and Technology.

CV

You can find my full CV at there.