Yumo Xu

I am an NLP scientist at AWS AI Labs researching and building intelligent language services for enterprises.

My current interests lie in the following areas:

  • Effective Retrieval-Augmented Generation (RAG) systems,
  • Accurate faithfulness evaluation and source attribution, and
  • Reliable autonomous agents with generalizable tool-use capabilities.

Prior to Amazon, I received my PhD in NLP at the University of Edinburgh, advised by Prof. Mirella Lapata. My PhD research was on text summarization, the process of condensing a source text into a shorter version while preserving its salient information.


News

Sep 23, 2024 Two long papers accepted by EMNLP’24 main conference.
Jul 1, 2024 I will serve as an Area Chair for NLP at Amazon Machine Learning Conference (AMLC).
Sep 7, 2023 I will serve as an Area Chair for NLG at LREC-COLING’24.
May 1, 2023 Generative modeling for eXtractive summarization (GenX) was accepted by ACL’23.
Apr 18, 2023 Excited to join AWS AI Labs in Seattle as a scientist.

(Recent) Selected Publications

  1. LLM - SFT
    Dancing in Chains: Reconciling Instruction Following and Faithfulness in Language Models
    Zhengxuan, Wu, Yuhao, Zhang*, Peng, Qi*, Yumo, Xu*, Rujun, Han, Yian, Zhang, Jifan, Chen, Bonan, Min, and Zhiheng, Huang
    In EMNLP 2024
  2. LLM - RAG
    RAG-QA Arena: Evaluating Domain Robustness for Long-form Retrieval Augmented Question Answering
    Rujun, Han, Yuhao, Zhang, Peng, Qi, Yumo, Xu, Jenyuan, Wang, Lan, Liu, William Yang, Wang, Bonan, Min, and Vittorio, Castelli
    In EMNLP 2024
  3. Summarization
    QTSumm: Query-Focused Summarization over Tabular Data
    Yilun, Zhao, Zhenting, Qi, Linyong, Nan, Boyu, Mi, Yixin, Liu, Weijin, Zou, Simeng, Han, Xiangru, Tang, Yumo, Xu, Arman, Cohan, and Dragomir, Radev
    In EMNLP 2023
  4. Summarization
    Text Summarization with Oracle Expectation
    Yumo, Xu, and Mirella, Lapata
    In ICLR 2023
  5. Summarization
    Document Summarization with Latent Queries
    Yumo, Xu, and Mirella, Lapata
    TACL 2022
  6. Summarization
    Coarse-to-Fine Query Focused Multi-Document Summarization
    Yumo, Xu, and Mirella, Lapata
    In EMNLP 2020