Unsupervised Induction of Linguistic Categories with Records of Reading, Speaking, and Writing

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

When learning POS taggers and syntactic chunkers for low-resource languages, different resources may be available, and often all we have is a small tag dictionary, motivating type-constrained unsupervised induction. Even small dictionaries can improve the performance of unsupervised induction algorithms. This paper shows that performance can be further improved by including data that is readily available or can be easily obtained for most languages, i.e., eye-tracking, speech, or keystroke logs (or any combination thereof). We project information from all these data sources into shared spaces, in which the union of words is represented. For English unsupervised POS induction, the additional information, which is not required at test time, leads to an average error reduction on Ontonotes domains of 1.5% over systems augmented with state-of-the-art word embeddings. On Penn Treebank the best model achieves 5.4% error reduction over a word embeddings baseline. We also achieve significant improvements for syntactic chunk induction. Our analysis shows that improvements are even bigger when the available tag dictionaries are smaller.
Original languageEnglish
Title of host publicationProceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics (NAACL) : Human Language Technologies, (Long Papers)
EditorsSilvio Ricardo Cordeiro , Shereen Oraby, Umashanthi Pavalanathan, Kyeongmin Rim
Number of pages11
Volume1
PublisherAssociation for Computational Linguistics
Publication date2018
Pages2028-2038
ISBN (Print)978-1-948087-27-8
DOIs
Publication statusPublished - 2018
Event16th Annual Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies - New Orleans, United States
Duration: 1 Jun 20186 Jun 2018

Conference

Conference16th Annual Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies
LandUnited States
ByNew Orleans
Periode01/06/201806/06/2018

Links

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