%0 Conference Paper %1 Moore93 %A Moore, Robert C. %B Proceedings of the 42nd Annual Meeting of the Association for Computational Linguistics, Barcelona, Spain %D 2004 %K article statistics algorithm machinetranslation %P 518-525 %T Improving IBM Word Alignment Model 1 %U http://dblp.uni-trier.de/db/conf/acl/acl2004.html#Moore04 %X We investigate a number of simple methods for improving the word-alignment accuracy of IBM Model 1. We demonstrate reduction in alignment error rate of approximately 30% resulting from (1) giving extra weight to the probability of alignment to the null word, (2) smoothing probability estimates for rare words, and (3) using a simple heuristic estimation method to initialize, or replace, EM training of model parameters.

@inproceedings{Moore93, abstract = {We investigate a number of simple methods for improving the word-alignment accuracy of IBM Model 1. We demonstrate reduction in alignment error rate of approximately 30% resulting from (1) giving extra weight to the probability of alignment to the null word, (2) smoothing probability estimates for rare words, and (3) using a simple heuristic estimation method to initialize, or replace, EM training of model parameters. }, added-at = {2006-11-11T18:58:29.000+0100}, author = {Moore, Robert C.}, biburl = {https://www.bibsonomy.org/bibtex/21f76344cdbef366bf00193359acd487e/tmalsburg}, booktitle = {Proceedings of the 42nd Annual Meeting of the Association for Computational Linguistics, Barcelona, Spain}, interhash = {40cd8e09e13cdce75a1607aa94c65691}, intrahash = {1f76344cdbef366bf00193359acd487e}, keywords = {article statistics algorithm machinetranslation}, pages = {518-525}, timestamp = {2006-11-11T18:58:29.000+0100}, title = {Improving IBM Word Alignment Model 1}, url = {http://dblp.uni-trier.de/db/conf/acl/acl2004.html#Moore04}, year = 2004 }