TY - GEN
T1 - Improving NER in Arabic using a morphological tagger
AU - Farber, Benjamin
AU - Freitag, Dayne
AU - Habash, Nizar
AU - Rambow, Owen
N1 - Funding Information:
This work was funded under the DARPA GALE program, contract HR0011-06-C-0023. We thank Mona Diab for helpful conversations.
PY - 2008
Y1 - 2008
N2 - We discuss a named entity recognition system for Arabic, and show how we incorporated the information provided by MADA, a full morphological tagger which uses a morphological analyzer. Surprisingly, the relevant features used are the capitalization of the English gloss chosen by the tagger, and the fact that an analysis is returned (that a word is not OOV to the morphological analyzer). The use of the tagger also improves over a third system which just uses a morphological analyzer, yielding a 14% reduction in error over the baseline. We conduct a thorough error analysis to identify sources of success and failure among the variations, and show that by combining the systems in simple ways we can significantly influence the precision-recall trade-off.
AB - We discuss a named entity recognition system for Arabic, and show how we incorporated the information provided by MADA, a full morphological tagger which uses a morphological analyzer. Surprisingly, the relevant features used are the capitalization of the English gloss chosen by the tagger, and the fact that an analysis is returned (that a word is not OOV to the morphological analyzer). The use of the tagger also improves over a third system which just uses a morphological analyzer, yielding a 14% reduction in error over the baseline. We conduct a thorough error analysis to identify sources of success and failure among the variations, and show that by combining the systems in simple ways we can significantly influence the precision-recall trade-off.
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M3 - Conference contribution
AN - SCOPUS:85037142389
T3 - Proceedings of the 6th International Conference on Language Resources and Evaluation, LREC 2008
SP - 2509
EP - 2514
BT - Proceedings of the 6th International Conference on Language Resources and Evaluation, LREC 2008
PB - European Language Resources Association (ELRA)
T2 - 6th International Conference on Language Resources and Evaluation, LREC 2008
Y2 - 28 May 2008 through 30 May 2008
ER -