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Parallel Treebanks in Phrase-Based Statistical Machine Translation
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In: Tinsley, John, Hearne, Mary and Way, Andy orcid:0000-0001-5736-5930 (2009) Parallel Treebanks in Phrase-Based Statistical Machine Translation. In: CICLING 2009: the 10th International Conference on Intelligent Text Processing and Computational Linguistics., Mexico City, Mexico. (2009)
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Grammatical feature data-oriented parsing
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Finn, Regina. - : Dublin City University. School of Computing, 2007
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In: Finn, Regina (2007) Grammatical feature data-oriented parsing. Master of Science thesis, Dublin City University. (2007)
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Capturing translational divergences with a statistical tree-to-tree aligner
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In: Hearne, Mary, Tinsley, John, Zhechev, Ventsislav and Way, Andy orcid:0000-0001-5736-5930 (2007) Capturing translational divergences with a statistical tree-to-tree aligner. In: TMI-07 - Proceedings of The 11th Conference on Theoretical and Methodological Issues in Machine Translation, 7-9 September 2007, Skövde, Sweden. (2007)
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Exploiting parallel treebanks to improve phrase-based statistical machine translation
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In: Tinsley, John, Hearne, Mary and Way, Andy orcid:0000-0001-5736-5930 (2007) Exploiting parallel treebanks to improve phrase-based statistical machine translation. In: TLT 2007 - The 6th International Workshop on Treebanks and Linguistic Theories, 7-8 December, 2007, Bergen, Norway. (2007)
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GF-DOP: grammatical feature data-oriented parsing
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In: Finn, Ríona, Hearne, Mary, Way, Andy orcid:0000-0001-5736-5930 and van Genabith, Josef (2006) GF-DOP: grammatical feature data-oriented parsing. In: Lexical Functional Grammar 2006, 10-13 Kuly 2006, Konstanz, Germany. (2006)
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Disambiguation strategies for data-oriented translation
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In: Hearne, Mary and Way, Andy orcid:0000-0001-5736-5930 (2006) Disambiguation strategies for data-oriented translation. In: EAMT 2006 - 11th Annual conference of the European Association for Machine Translation, 19-20 June 2006, Oslo, Norway. (2006)
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Data-oriented models of parsing and translation
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Hearne, Mary. - : Dublin City University. School of Computing, 2005
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In: Hearne, Mary (2005) Data-oriented models of parsing and translation. PhD thesis, Dublin City University. (2005)
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Robust sub-sentential alignment of phrase-structure trees
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In: Groves, Declan, Hearne, Mary and Way, Andy orcid:0000-0001-5736-5930 (2004) Robust sub-sentential alignment of phrase-structure trees. In: COLING 2004 - 20th International Conference on Computational Linguistics, 23-27 August 2004, Geneva, Switzerland. (2004)
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Structured parameter estimation for LFG-DOP using Backoff
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In: Hearne, Mary and Sima'an, Khalil (2003) Structured parameter estimation for LFG-DOP using Backoff. In: RANLP 2003 - Recent Advances in Natural Language Processing, Borovets, Bulgaria, 10-12 September 2003. (2003)
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Abstract:
Despite its state-of-the-art performance, the Data Oriented Parsing (DOP) model has been shown to suffer from biased parameter estimation, and the good performance seems more the result of ad hoc adjustments than correct probabilistic generalization over the data. In recent work, we developed a new estimation procedure, called Backoff Estimation, for DOP models that are based on Phrase-Structure annotations (so called Tree-DOP models). Backoff Estimation deviates from earlier methods in that it treats the model parameters as a highly structured space of correlated events (backoffs), rather than a set of disjoint events. In this paper we show that the problem of biased estimates also holds for DOP models that are based on Lexical-Functional Grammar annotations (i.e. LFG-DOP), and that the LFG-DOP parameters also constitute a hierarchically structured space. Subsequently, we adapt the Backoff Estimation algorithm from Tree-DOP to LFG-DOP models. Backoff Estimation turns out to be a natural solution to some of the specific problems of robust parsing under LFGDOP.
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Keyword:
data oriented parsing (DOP) model; Machine translating
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URL: http://doras.dcu.ie/15315/
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Example-based machine translation via the web
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In: Gough, Nano, Way, Andy orcid:0000-0001-5736-5930 and Hearne, Mary (2002) Example-based machine translation via the web. In: AMTA 2002 - 5th Conference of the Association for Machine Translation in the Americas, 8-12 October 2002, Tiburon, CA, USA. ISBN 978-3-540-44282-0 (2002)
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