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Parsing Arabic using treebank-based LFG resources
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In: Tounsi, Lamia, Attia, Mohammed and van Genabith, Josef orcid:0000-0003-1322-7944 (2009) Parsing Arabic using treebank-based LFG resources. In: Lexical Functional Grammar 2009, 13-16 July 2009, Cambridge, UK. (2009)
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| 82 |
Experiments on domain adaptation for English-Hindi SMT
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In: Haque, Rejwanul orcid:0000-0003-1680-0099 , Naskar, Sudip Kumar, van Genabith, Josef orcid:0000-0003-1322-7944 and Way, Andy orcid:0000-0001-5736-5930 (2009) Experiments on domain adaptation for English-Hindi SMT. In: PACLIC 23 - the 23rd Pacific Asia Conference on Language, Information and Computation, 3-5 December 2009, Hong Kong. (2009)
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| 83 |
Dependency parsing resources for French: Converting acquired lexical functional grammar F-Structure annotations and parsing F-Structures directly
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In: Schluter, Natalie and van Genabith, Josef orcid:0000-0003-1322-7944 (2009) Dependency parsing resources for French: Converting acquired lexical functional grammar F-Structure annotations and parsing F-Structures directly. In: Nodalida 2009 Conference, 14 - 16 May 2009, Odense, Denmark. (2009)
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| 84 |
Treebank-based acquisition of Chinese LFG resources for parsing and generation
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Guo, Yuqing. - : Dublin City University. School of Computing, 2009
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In: Guo, Yuqing (2009) Treebank-based acquisition of Chinese LFG resources for parsing and generation. PhD thesis, Dublin City University. (2009)
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| 85 |
F-structure transfer-based statistical machine translation
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In: Graham, Yvette, van Genabith, Josef orcid:0000-0003-1322-7944 and Bryl, Anton (2009) F-structure transfer-based statistical machine translation. In: Lexical Functional Grammar 2009, 13-16 July 2009, Cambridge, UK. (2009)
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| 86 |
Automatic acquisition of LFG resources for German - as good as it gets
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In: Rehbein, Ines and van Genabith, Josef orcid:0000-0003-1322-7944 (2009) Automatic acquisition of LFG resources for German - as good as it gets. In: Lexical Functional Grammar 2009, 13-16 July 2009, Cambridge, UK. (2009)
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| 87 |
Part-of-speech tagging and partial parsing for Irish using finite-state transducers and constraint grammar
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In: Uí Dhonnchadha, Elaine (2009) Part-of-speech tagging and partial parsing for Irish using finite-state transducers and constraint grammar. PhD thesis, Dublin City University. (2009)
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| 88 |
Automatic treebank-based acquisition of Arabic LFG dependency structures
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In: Tounsi, Lamia, Attia, Mohammed and van Genabith, Josef orcid:0000-0003-1322-7944 (2009) Automatic treebank-based acquisition of Arabic LFG dependency structures. In: EACL 2009 Workshop on Computational Approaches to Semitic Languages, 31 March 2009, Athens, Greece. (2009)
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| 89 |
Treebank-based grammar acquisition for German
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Rehbein, Ines. - : Dublin City University. National Centre for Language Technology (NCLT), 2009. : Dublin City University. School of Computing, 2009
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In: Rehbein, Ines (2009) Treebank-based grammar acquisition for German. PhD thesis, Dublin City University. (2009)
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| 90 |
Judging grammaticality: experiments in sentence classification
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In: Wagner, Joachim orcid:0000-0002-8290-3849 , Foster, Jennifer orcid:0000-0002-7789-4853 and van Genabith, Josef orcid:0000-0003-1322-7944 (2009) Judging grammaticality: experiments in sentence classification. CALICO Journal, 26 (3). pp. 474-490. ISSN 0742-7778 (2009)
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| 91 |
A hybrid filtering approach for question answering
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In: Adafre, Sisay Fissaha and van Genabith, Josef orcid:0000-0003-1322-7944 (2009) A hybrid filtering approach for question answering. In: LFG-09 - 14th International Lexical Functional Grammar Conference, 13-16 July 2009, Cambridge, UK. (2009)
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| 92 |
Towards a machine-learning architecture for lexical functional grammar parsing
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In: Chrupała, Grzegorz (2008) Towards a machine-learning architecture for lexical functional grammar parsing. PhD thesis, Dublin City University. (2008)
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| 93 |
Adapting a WSJ-trained parser to grammatically noisy text
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In: Foster, Jennifer orcid:0000-0002-7789-4853 , Wagner, Joachim orcid:0000-0002-8290-3849 and van Genabith, Josef (2008) Adapting a WSJ-trained parser to grammatically noisy text. In: ACL-08:HLT - 46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies, 15-20 June 2008, Columbus, USA. (2008)
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| 94 |
Treebank-based acquisition of LFG parsing resources for French
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In: Schluter, Natalie and van Genabith, Josef (2008) Treebank-based acquisition of LFG parsing resources for French. In: the Sixth International Language Resources and Evaluation Conference (LREC'08), May 28-30, 2008, Marrakech, Morocco. (2008)
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| 95 |
Accurate and robust LFG-based generation for Chinese
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In: Guo, Yuqing, Wang, Haifeng and van Genabith, Josef (2008) Accurate and robust LFG-based generation for Chinese. In: INLG 08 - 5th International Natural Language Generation Conference, 12-14 June 2008, Salt Fork, Ohio, USA. (2008)
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| 96 |
Packed rules for automatic transfer-rule induction
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In: Graham, Yvette and van Genabith, Josef (2008) Packed rules for automatic transfer-rule induction. In: the European Association of Machine Translation Conference 2008, Hamburg, Germany. (2008)
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| 97 |
Exploiting multi-word units in statistical parsing and generation
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In: Cafferkey, Conor (2008) Exploiting multi-word units in statistical parsing and generation. Master of Science thesis, Dublin City University. (2008)
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Wide-coverage deep statistical parsing using automatic dependency structure annotation
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In: Cahill, Aoife orcid:0000-0002-3519-7726 , Burke, Michael, O'Donovan, Ruth, Riezler, Stefan, van Genabith, Josef orcid:0000-0003-1322-7944 and Way, Andy orcid:0000-0001-5736-5930 (2008) Wide-coverage deep statistical parsing using automatic dependency structure annotation. Computational Linguistics, 34 (1). pp. 81-124. (2008)
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Abstract:
A number of researchers (Lin 1995; Carroll, Briscoe, and Sanfilippo 1998; Carroll et al. 2002; Clark and Hockenmaier 2002; King et al. 2003; Preiss 2003; Kaplan et al. 2004;Miyao and Tsujii 2004) have convincingly argued for the use of dependency (rather than CFG-tree) representations for parser evaluation. Preiss (2003) and Kaplan et al. (2004) conducted a number of experiments comparing “deep” hand-crafted wide-coverage with “shallow” treebank- and machine-learning based parsers at the level of dependencies, using simple and automatic methods to convert tree output generated by the shallow parsers into dependencies. In this article, we revisit the experiments in Preiss (2003) and Kaplan et al. (2004), this time using the sophisticated automatic LFG f-structure annotation methodologies of Cahill et al. (2002b, 2004) and Burke (2006), with surprising results. We compare various PCFG and history-based parsers (based on Collins, 1999; Charniak, 2000; Bikel, 2002) to find a baseline parsing system that fits best into our automatic dependency structure annotation technique. This combined system of syntactic parser and dependency structure annotation is compared to two hand-crafted, deep constraint-based parsers (Carroll and Briscoe 2002; Riezler et al. 2002). We evaluate using dependency-based gold standards (DCU 105, PARC 700, CBS 500 and dependencies for WSJ Section 22) and use the Approximate Randomization Test (Noreen 1989) to test the statistical significance of the results. Our experiments show that machine-learning-based shallow grammars augmented with sophisticated automatic dependency annotation technology outperform hand-crafted, deep, widecoverage constraint grammars. Currently our best system achieves an f-score of 82.73% against the PARC 700 Dependency Bank (King et al. 2003), a statistically significant improvement of 2.18%over the most recent results of 80.55%for the hand-crafted LFG grammar and XLE parsing system of Riezler et al. (2002), and an f-score of 80.23% against the CBS 500 Dependency Bank (Carroll, Briscoe, and Sanfilippo 1998), a statistically significant 3.66% improvement over the 76.57% achieved by the hand-crafted RASP grammar and parsing system of Carroll and Briscoe (2002).
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Keyword:
Machine translating; Parsers; Translation; Treebank
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URL: http://doras.dcu.ie/16173/
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| 99 |
A novel dependency-based evaluation metric for machine translation
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In: Owczarzak, Karolina (2008) A novel dependency-based evaluation metric for machine translation. PhD thesis, Dublin City University. (2008)
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Parser evaluation and the BNC: evaluating 4 constituency parsers with 3 metrics
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In: Foster, Jennifer orcid:0000-0002-7789-4853 and van Genabith, Josef (2008) Parser evaluation and the BNC: evaluating 4 constituency parsers with 3 metrics. In: LREC 2008 - Sixth International Conference on Language Resources and Evaluation, 28-30 May 2008, Marrakech, Morocco. (2008)
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