Nelson Liu

nfliu@cs.stanford.edu
Gates 318

Nelson Liu

I am a third-year PhD student in computer science at Stanford University, where I work in the Natural Language Processing Group. My advisor is Percy Liang, and my research is graciously supported by a NSF Graduate Research Fellowship.

Previously, I received undergraduate degrees in computer science and linguistics from the University of Washington, where I worked with Noah A. Smith. I've also spent time at the Allen Institute for Artificial Intelligence (AI2) (working with Matt Gardner) and the USC Information Sciences Institute (working with Kevin Knight and Jonathan May).

[Full CV] [Github] [Google Scholar] [Blog]


Publications

  • Dyna-bAbI: unlocking bAbI's potential with dynamic synthetic benchmarking
    Ronen Tamari, Kyle Richardson, Noam Kahlon, Aviad Sar-Shalom, Nelson F. Liu, Reut Tsarfaty, and Dafna Shahaf.
    In Joint Conference on Lexical and Computational Semantics (*SEM), 2022.
    [bib] [abstract]

  • Identifying the Limits of Cross-Domain Knowledge Transfer for Pretrained Models
    Zhengxuan Wu, Nelson F. Liu, and Christopher Potts.
    In ACL Workshop on Representation Learning for NLP (RepL4NLP), 2022. (Best Paper Award).
    [bib] [abstract] [code]

  • Making Heads and Tails of Models with Marginal Calibration for Sparse Tagsets
    Michael Kranzlein, Nelson F. Liu, and Nathan Schneider.
    In Findings of ACL: EMNLP, 2021.
    [bib] [abstract]

  • Lexical Semantic Recognition
    Nelson F. Liu, Daniel Hershcovich, Michael Kranzlein, and Nathan Schneider.
    In ACL Workshop on Multiword Expressions (MWE), 2021.
    [bib] [abstract] [code]

  • Can Small and Synthetic Benchmarks Drive Modeling Innovation? A Retrospective Study of Question Answering Modeling Approaches
    Nelson F. Liu, Tony Lee, Robin Jia, and Percy Liang.
    Preprint, 2021.
    [bib] [abstract] [interactive plots]

  • Evaluating Models' Local Decision Boundaries via Contrast Sets
    Matt Gardner, Yoav Artzi, Victoria Basmova, Jonathan Berant, Ben Bogin, Sihao Chen, Pradeep Dasigi, Dheeru Dua, Yanai Elazar, Ananth Gottumukkala, Nitish Gupta, Hannaneh Hajishirzi, Gabriel Ilharco, Daniel Khashabi, Kevin Lin, Jiangming Liu, Nelson F. Liu, Phoebe Mulcaire, Qiang Ning, Sameer Singh, Noah A. Smith, Sanjay Subramanian, Reut Tsarfaty, Eric Wallace, Ally Zhang and Ben Zhou.
    In Findings of ACL: EMNLP, 2020.
    [bib] [abstract] [dataset]

  • Quoref: A Reading Comprehension Dataset with Questions Requiring Coreferential Reasoning
    Pradeep Dasigi, Nelson F. Liu, Ana Marasović, Noah A. Smith, and Matt Gardner.
    In Conference on Empirical Methods in Natural Language Processing & International Joint Conference on Natural Language Processing (EMNLP-IJCNLP), 2019.
    [bib] [abstract] [poster] [dataset] [leaderboard]

  • Barack's Wife Hillary: Using Knowledge Graphs for Fact-Aware Language Modeling
    Robert L. Logan IV, Nelson F. Liu, Matthew E. Peters, Matt Gardner, and Sameer Singh.
    In Annual Meeting of the Association for Computational Linguistics (ACL), 2019.
    [bib] [abstract] [poster] [code] [dataset]

  • Linguistic Knowledge and Transferability of Contextual Representations
    Nelson F. Liu, Matt Gardner, Yonatan Belinkov, Matthew E. Peters, and Noah A. Smith.
    In North American Chapter of the Association for Computational Linguistics (NAACL), 2019.
    [bib] [abstract] [slides: pdf, pdf with notes, key] [code]

  • Inoculation by Fine-Tuning: A Method for Analyzing Challenge Datasets
    Nelson F. Liu, Roy Schwartz, and Noah A. Smith.
    In North American Chapter of the Association for Computational Linguistics (NAACL), 2019.
    [bib] [abstract] [slides: pdf, pdf with notes, key] [code]

  • LSTMs Exploit Linguistic Attributes of Data
    Nelson F. Liu, Omer Levy, Roy Schwartz, Chenhao Tan, and Noah A. Smith.
    In ACL Workshop on Representation Learning for NLP (RepL4NLP), 2018. (Best Paper Award).
    [bib] [abstract] [(short) slides] [poster] [code]

  • AllenNLP: A Deep Semantic Natural Language Processing Platform
    Matt Gardner, Joel Grus, Mark Neumann, Oyvind Tafjord, Pradeep Dasigi, Nelson F. Liu, Matthew Peters, Michael Schmitz, and Luke Zettlemoyer.
    In ACL Workshop for Natural Language Processing Open Source Software (NLP-OSS), 2018.
    [bib] [abstract] [code]

  • Discovering Phonesthemes with Sparse Regularization
    Nelson F. Liu, Gina-Anne Levow, and Noah A. Smith.
    In NAACL Workshop on Subword and Character Level Models in NLP (SCLeM), 2018.
    [bib] [abstract] [poster] [code]

  • Crowdsourcing Multiple Choice Science Questions
    Johannes Welbl, Nelson F. Liu, and Matt Gardner.
    In EMNLP Workshop on Noisy User-generated Text (W-NUT), 2017.
    [bib] [abstract] [data] [poster]

Miscellany