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Improved statistical alignment models

Open access
Och, Franz Josef, Ney, Hermann·2000·Proceedings of the 38th Annual Meeting on Association for Computational Linguistics - ACL '00

Abstract

In this paper, we present and compare various single-word based alignment models for statistical machine translation. We discuss the five IBM alignment models, the Hidden-Markov alignment model, smoothing techniques and various modifications. We present different methods to combine alignments. As evaluation criterion we use the quality of the resulting Viterbi alignment compared to a manually produced reference alignment. We show that models with a first-order dependence and a fertility model lead to significantly better results than the simple models IBM-1 or IBM-2, which are not able to go beyond zero-order dependencies.

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Metadata

Authors
Och, F. J., & Ney, H.
Venue
Proceedings of the 38th Annual Meeting on Association for Computational Linguistics - ACL '00
Published
2000
Pages
440-447
OpenAlex
W1973923101
Cited by
1,001
References
0
FWCI
23.67
Type
conference paper
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Improved statistical alignment models. https://app.cochat.ai/papers/10.3115/1075218.1075274
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Och, F. J., & Ney, H. (2000). Improved statistical alignment models. Proceedings of the 38th Annual Meeting on Association for Computational Linguistics - ACL '00. https://doi.org/10.3115/1075218.1075274

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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