statistical decisiontree models for parsing
Tài liệu Báo cáo khoa học: "Statistical Decision-Tree Models for Parsing*" ppt
... Language Pars- ing as Statistical Pattern Recognition. Doctoral dissertation. Stanford University, Stanford, Cali- fornia. 283 Statistical Decision-Tree Models for Parsing* David M. Magerman ... and in some cases long-distance structural information is also needed. Statistical models for 282 root - the node is the root of the tree. For an n word sentence, a parse tree has n leaf ... questions. For more discussion of the use of binary decision-tree questions, see (Magerman, 1994). 3 SPATTER Parsing The SPATTER parsing algorithm is based on inter- preting parsing as a statistical...
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Tài liệu Báo cáo khoa học: "Statistical phrase-based models for interactive computer-assisted translation" pdf
... sentences tI1. Therefore, thesame techniques (translation models, decoder al-gorithm, etc.) which have been developed for SMT can be used in CAT.Note that the statistical models are defined atword ... framework, real-time is re-quired.4 Phrase-based models The usual statistical translation models can beclassified as single-word based alignment models. Models of this kind assume that an input word ... Association for Computational Linguistics Statistical phrase-based models for interactive computer-assistedtranslationJes´us Tom´as and Francisco CasacubertaInstituto Tecnol´ogico de Inform´aticaUniversidad...
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Tài liệu Báo cáo khoa học: "Refined Lexicon Models for Statistical Machine Translation using a Maximum Entropy Approach" pptx
... language.Those lexicon models lack from context infor-mation that can be extracted from the same paral-lel corpus. This additional information could be:Simple context information: information ofthe ... Spainfcn@iti.upv.esAbstractTypically, the lexicon models used in statistical machine translation systemsdo not include any kind of linguisticor contextual information, which oftenleads to problems in performing a cor-rect ... Refined Lexicon Models for Statistical Machine Translation using aMaximum Entropy ApproachIsmael Garc´ıa VareaDpto. de Inform´aticaUniv. de Castilla-La ManchaCampus...
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Tài liệu Báo cáo khoa học: "Towards History-based Grammars: Using Richer Models for Probabilistic Parsing*" docx
... describe a technique for estimat- ing the parameters for this model using decision trees. The history-based grammar model provides a mechanism for taking advantage of contextual information from ... h Grammar and parse tree for aabb. dexed the non-terminal (NT) nodes of the tree with this leftmost order. We denote by ~- the sen- tential form obtained just before we expand node i. Hence, ... rewriting the non- terminal AT/. 32 Towards History-based Grammars: Using Richer Models for Probabilistic Parsing* Ezra Black Fred Jelinek John Lafferty David M. Magerman Robert Mercer Salim...
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Tài liệu Báo cáo khoa học: "Incremental Parsing Models for Dialog Task Structure" doc
... to improvedperformance for any method. One utterance ofcontext is best for shift-reduce and start-join; threeis best for the connection path method. The shift-reduce method performs the best. ... 47.86, as com-pared with 34.91 for start-complete, 25.13 for theconnection path method, and 21.32 for the chunk-based baseline. These performance differences arestatistically signicant at p ... information pertaining toan order and information pertaining to a product.Table 4 shows the parsing actions performed byeach of our methods on the dialog snippet pre-sented in Figure 4. For...
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Báo cáo khoa học: "Distortion Models For Statistical Machine Translation" doc
... May 27 – June 1. Association for Computational Linguistics.Philipp Koehn. 2004. Pharaoh: a Beam Search De-coder for Phrase-Based Statistical Machine Trans-lation Models. In Proceedings of the ... for the experiments reported here is the sameas the one used for other experiments reported in thispaper.The results in Table 3 illustrate how the languagemodel performs reasonably well for ... Meeting of the ACL, pages 529–536,Sydney, July 2006.c2006 Association for Computational LinguisticsDistortion Models For Statistical Machine TranslationYaser Al-Onaizan and Kishore PapineniIBM...
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Báo cáo khoa học: "Generalized Algorithms for Constructing Statistical Language Models" pdf
... finding all for a given is . Therefore,the total cost is . For all non-empty , we create a new state and for all we set . We create a transition, and for all such that ,we set . For all such ... with other in-formation sources to rank alternative hypotheses by as-signing them some probabilities. There are classicaltechniques for constructing language models such as-gram models with ... representation of -gram lan-guage models by WFAs whose size is practical for offlineuse even in tasks with a vocabulary size of about 500,000words and for .Class-based models. In many applications,...
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Tài liệu Báo cáo " Development of system of HydrodynamicEnvironmental models for coastal area (Case study in Quang Ninh - Hai Phong region) " doc
... of models should be based on the 3D thermo-hydrodynamical models for each particular environment that contains interested matter. Development of system of hydrodynamic-environmental models for ... need to build a system of models for each environment which is related to each other through the boundary conditions. In this case, we can introduce the system of models for oil slick, oil-in-water ... (2003). 3. Model for suspended particulate matter transport and bottom bathymetry evolution The model for SPM and bottom bathymetry evolution includes 2 sub -models: 3D SPM Model for water column...
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Tài liệu Thermodynamic Models for Industrial Applications: From Classical and Advanced Mixing Rules to Association Theories pptx
... Chichester, West Sussex, PO19 8SQ, United Kingdom For details of our global editorial offices, for customer services and for information about how to apply for permissionto reuse the copyright material ... n these models are used for designpurposes, typically within a commercial simulation package. Applications in the oil and gas and chemicalsectors are emphasized but models suitable for polymers ... general thermodynamic models which can describe equallysuccessfully all types of phase equilibria at all conditions. Suitable models for high- and low-pressure phaseequilibria for simple as well...
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Tài liệu Báo cáo khoa học: "Topic Models for Dynamic Translation Model Adaptation" pptx
... unseen for a given domain s, we are alreadyperforming an implicit form of smoothing (whencomputing the expected counts), since each docu-ment has a distribution over all topics, and thereforewe ... oppositeis true, with the LTM models achieving better per-formance.6On the NIST corpus, LTM-10 again achieves thebest gain of approximately 1 BLEU and up to 3 TER.LTM performs on par with or better ... consistent within a document.Results Results for both settings are shown in Ta-ble 2. GTM models the latent topics at the documentlevel, while LTM models each sentence as a separatedocument....
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Tài liệu Báo cáo khoa học: "Incremental Syntactic Language Models for Phrase-based Translation" pptx
... Yamada.2003. Syntax-based language models for statistical machine translation. In Proceedings of the Ninth Ma-chine Translation Summit of the International Associ-ation for Machine Translation.Ciprian ... Association for Computational Linguistics, pages 620–631,Portland, Oregon, June 19-24, 2011.c2011 Association for Computational LinguisticsIncremental Syntactic Language Models for Phrase-based ... syntactic language models score sen-tences in a similar left-to-right fashion, and aretherefore a good mechanism for incorporat-ing syntax into phrase-based translation. Wegive a formal definition...
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- atomic models for diffusion
- basic models for repairable systems
- new models for improving
- generating statistical language models
- flow network models for word alignment
- constructing statistical language models
- statistical machine translation by parsing
- syntax based language models for statistical machine translation
- adaptation of reordering models for statistical machine translation
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