@inproceedings{yang-cardie-2012-extracting,
    title = "Extracting Opinion Expressions with semi-{M}arkov Conditional Random Fields",
    author = "Yang, Bishan  and
      Cardie, Claire",
    editor = "Tsujii, Jun{'}ichi  and
      Henderson, James  and
      Pa{\c{s}}ca, Marius",
    booktitle = "Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning",
    month = jul,
    year = "2012",
    address = "Jeju Island, Korea",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/D12-1122/",
    pages = "1335--1345"
}