Báo cáo khoa học: "An Optimization Tool for MaltParser" pptx

... audience contributetheir own data sets for optimization, provided thatthey are in CoNLL format.65 ConclusionMaltOptimizer is an optimization tool for Malt-Parser, which is primarily aimed ... why we present MaltOptimizer, a tool for optimizing MaltParser for a new languageor domain, based on an analysis of the train-ing data. The optimization is performed in threephases: data analysis, ... hope to cater for users58without speciﬁc knowledge of MaltParser, whocan use the tool for black box optimization, aswell as expert users, who can use it interactivelyto speed up optimization. ...

Báo cáo khoa học: " An NLP Tool Suite for Processing Word Lattices" docx

... annotation format. Moreover,the MACAON exchange format was defined from thebottom up, originating from the authors’ need to useseveral existing tools and adapt their input/outputformats in order for ... Aix-Marseille(alexis.nasr,frederic.bechet,jean-francois.rey,benoit.favre,joseph.le.roux)@lif.univ-mrs.frAbstractMACAON is a tool suite for standard NLP tasksdeveloped for French. MACAON has been de-signed to process both human-produced textand highly ambiguous word-lattices producedby NLP tools. MACAON ... Association for Computational LinguisticsMACAONAn NLP Tool Suite for Processing Word LatticesAlexis Nasr Frédéric Béchet Jean-François Rey Benoˆıt Favre Joseph Le Roux∗Laboratoire d’Informatique...

Tài liệu Báo cáo khoa học: "An Unsupervised Model for Joint Phrase Alignment and Extraction" ppt

... framework for spec-ifying compositional nonparametric Bayesian models.Advances in Neural Information Processing Systems,19:641.Philipp Koehn et al. 2007. Moses: Open source toolkit for statistical ... (θ|E, F). (1)If θ takes the form of a scored phrase table, wecan use traditional methods for phrase-based SMT toﬁnd P (e|f , θ) and concentrate on creating a model for P (θ|E, F). We decompose ... according to a ﬁxed probabil-ity pu3, then generating from Pba for aligned phrasepairs, or Pbu for unaligned phrase pairs. For Pba, we adopt a base measure similar to thatused by DeNero...

Tài liệu Báo cáo khoa học: "An Ensemble Method for Selection of High Quality Parses" pdf

... clutter, for the ﬁlter f-score measure we use the maximumrecall (MR) baseline rather than the minimum length(ML) baseline, since the former outperforms the lat-ter. Thus, ML is only shown for the ... fromdifferent domains. For a test setting used byprevious work, we show an error reductionof 31% as opposed to their 20%.1 IntroductionMany algorithms for major NLP applications suchas information extraction ... normalizing oversentence lengths is less of a factor. For this reason,in this paper we present detailed graphs for the aver-age f-score. For completeness, Table 4 also providessome of the results...

Tài liệu Báo cáo khoa học: "An Approximate Approach for Training Polynomial Kernel SVMs in Linear Time" doc

... Association for Computational LinguisticsAn Approximate Approach for Training Polynomial Kernel SVMs in Linear Time Yu-Chieh Wu Jie-Chi Yang Yue-Shi Lee Dept. of Computer Science and Information ... methods, for example support vector machines (SVM) (Vapnik, 1995) are successfully applied to many natural language processing (NLP) problems. They yielded very competitive and satisfactory performance ... feature conjunctions. However, the training and testing time costs for polynomial kernel SVM is far slow than the linear kernel. For example, it took one day to train the CoNLL-2000 task with...

Tài liệu Báo cáo khoa học: "An Improved Parser for Data-Oriented Lexical-Functional Analysis" doc

... An Improved Parser for Data-Oriented Lexical-Functional AnalysisRens BodInformatics Research Institute, University of Leeds, Leeds LS2 9JT, UK, &Institute for Logic, Language and ... frag-ment size is confirmed for LFG-DOP; (3) LFG-DOP's relative frequency estimator performsworse than a discounted frequency estimator; and(4) LFG-DOP significantly outperforms Tree-DOP if evaluated ... derivation for an LFG-DOPrepresentation R is a sequence of fragments thefirst of which is labeled with S and for which theiterative application of the composition operationproduces R. For an...

Tài liệu Báo cáo khoa học: "An Integrated Environment for Computational Linguistics Experimentation" pot

... conveniently vi-sualised. The uses of the platform range from cor-pora exploration to the development of fully oper-ational automatic analysers.Other platform or tools pursue similar goals.We share ... that the LinguaStream platformpromotes the combination of purely declarativeformalisms (when GATE is mostly based on theJAPE language and NOOJ focuses on a uniqueformalism), and allows processing ... analy-sis models and methodological concerns. Finally,when other platforms usually enforce the use of adedicated document format, LinguaStream is ableto process any XML document. On the other...

Tài liệu Báo cáo khoa học: "An expressive formalism for describing tree-based grammars" docx

... tree description and/or of semantic formu-las. The XMG formalism furthermore supports thesharing of identiﬁers across dimension hence al-lowing for a straightforward encoding of the syn-tax/semantics ... frame-work for the processing of linguistic meta-descriptions.1 IntroductionIt is well known that grammar engineering is acomplex task and that factorizing grammar in-formation is crucial for the ... the use of the system for implementing different types of tree based gram-mars. Section 5 concludes with pointers for fur-ther research and improvements.2 Linguistic formalismAs mentioned...

Tài liệu Báo cáo khoa học: "An annotation scheme for discourse-level argumentation in research articles" doc

... work as basis of or support for own work? Figure 2: Decision tree for annotation Our materials consist of 48 computational linguistics papers (22 for Study I, 26 for Study II), taken from ... to make the scheme applicable to reliable annotation for several non-discourse analysts (and for potential automatic annotation). For the development of our scheme, we used computational ... between two demands: we wanted the scheme to contain enough information for automatic summarization, but still be practicable for hand coding. Annotation proceeds sentence by sentence ac-...

Tài liệu Báo cáo khoa học: "AN INDEXING TECHNIQUE FOR IMPLEMENTING COMMAND RELATIONS" ppt

... requierments for the formalism used. Hence, the indexing technique has a wide spectrum of applications for testing command relations in syntactic analysis. Futhermore, this method can also be used for ... special cases of definitions 1.1 and 1.2 for the property of being a set of maximal projections. Before I formulate the general command definition in a formal way, I will now quote some other ... between syntactic and semantic structure, since the necessary syntactic information is encoded in indices. Therefore, this information can be moved to any required position in the semantic structure...

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