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Cited by 305

The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.

Contrastive estimation: training log-linear models on unlabeled data

Open access
Smith, Noah A., Eisner, Jason·2005·Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics - ACL '05

Abstract

Conditional random fields (Lafferty et al., 2001) are quite effective at sequence labeling tasks like shallow parsing (Sha and Pereira, 2003) and named-entity extraction (McCallum and Li, 2003). CRFs are log-linear, allowing the incorporation of arbitrary features into the model. To train on unlabeled data, we require unsupervised estimation methods for log-linear models; few exist. We describe a novel approach, contrastive estimation. We show that the new technique can be intuitively understood as exploiting implicit negative evidence and is computationally efficient. Applied to a sequence labeling problem---POS tagging given a tagging dictionary and unlabeled text---contrastive estimation outperforms EM (with the same feature set), is more robust to degradations of the dictionary, and can largely recover by modeling additional features.

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Metadata

Authors
Smith, N. A., & Eisner, J.
Venue
Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics - ACL '05
Published
2005
Pages
354-362
OpenAlex
W2137807925
Cited by
305
References
24
FWCI
10.02
Type
conference paper
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Contrastive estimation: training log-linear models on unlabeled data. https://app.cochat.ai/papers/10.3115/1219840.1219884
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Smith, N. A., & Eisner, J. (2005). Contrastive estimation: training log-linear models on unlabeled data. Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics - ACL '05. https://doi.org/10.3115/1219840.1219884

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.