Chenyan Xiong Principal Investigator.Chenyan supports the group in various ways. Nana Xiong Mascot.Nana provides emontional supports. João Miguel Coelho Graduate Research Assistant.Joao works on dense retrieval models. Gbemileke Onilude Graduate Research Assistant.Leke works on efficient language models. Zichun Yu Graduate Research Assistant.Zichun works on efficient language models. Jingyuan He Directed Study.Jingyuan works on large scale dense retrieval. Liwen Sun Directed Study.Liwen works on LLM for healthcare. Luo Qi Chan Directed Study.Luo Qi works on large scale dense retrieval .