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Promoting Flexible Translations in Statistical Machine Translation


Sennrich, Rico (2013). Promoting Flexible Translations in Statistical Machine Translation. In: Proceedings of the XIV Machine Translation Summit, Nice, 2 September 2013 - 6 September 2013, 207-214.

Abstract

While SMT systems can learn to translate multiword expressions (MWEs) from parallel text, they typically have no notion of non-compositionality, and thus overgeneralise translations that are only used in certain contexts. This paper describes a novel approach to measure the flexibility of a phrase pair, i.e. its tendency to occur in many contexts, in contrast to phrase pairs that are only valid in one or a few fixed expressions. The measure learns from the parallel training text, is simple to implement and language independent. We argue that flexible phrase pairs should be preferred over inflexible ones, and present experiments with phrase-based and hierarchical translation models in which we observe performance gains of up to 0.9 BLEU points.

Abstract

While SMT systems can learn to translate multiword expressions (MWEs) from parallel text, they typically have no notion of non-compositionality, and thus overgeneralise translations that are only used in certain contexts. This paper describes a novel approach to measure the flexibility of a phrase pair, i.e. its tendency to occur in many contexts, in contrast to phrase pairs that are only valid in one or a few fixed expressions. The measure learns from the parallel training text, is simple to implement and language independent. We argue that flexible phrase pairs should be preferred over inflexible ones, and present experiments with phrase-based and hierarchical translation models in which we observe performance gains of up to 0.9 BLEU points.

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Additional indexing

Item Type:Conference or Workshop Item (Paper), refereed, original work
Communities & Collections:06 Faculty of Arts > Institute of Computational Linguistics
Dewey Decimal Classification:000 Computer science, knowledge & systems
410 Linguistics
Language:English
Event End Date:6 September 2013
Deposited On:19 Sep 2013 12:48
Last Modified:07 Dec 2017 22:31
Free access at:Official URL. An embargo period may apply.
Official URL:http://www.mtsummit2013.info/files/proceedings/main/mt-summit-2013-sennrich.pdf

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