Báo cáo khoa học: "Improving Arabic Dependency Parsing with Form-based and Functional Morphological Features" pdf

... LinguisticsImproving Arabic Dependency Parsing with Form-based and Functional Morphological FeaturesYuval MartonT.J. Watson Research CenterIBMyymarton@us.ibm.comNizar Habash and Owen RambowCenter ... Marton, Nizar Habash, and Owen Rambow. 2010.Improving Arabic dependency parsing with inﬂec-tional and lexical morphological features. In Proceed-ings of Workshop on Statistical Parsing of Morpho-logically ... for parsing on automaticallytagged input. We further contrast the contri-bution of form-based and functional features, and show that functional gender and number(e.g., “broken plurals”) and...

Báo cáo khoa học: "Transition-based Dependency Parsing with Rich Non-local Features" pdf

... templatesinclude unigram word, POS-tag and dependency labels of S0h2, S0l2, S0r2 and N0l2, as well asPOS-tag combinations with S0 and N0.Set of dependency labels with S0 and N0As a more global ... perform unlabeled parsing, we perform labeled parsing by augmentingthe LeftArc and RightArc actions with the setof dependency labels. Hence our work is in line with Titov and Henderson (2007) ... ofunique dependency labels from the modiﬁers of S0 and N0. This information is combined with the word and POS-tag of S0 and N0to make feature templates.In Table 2, sl and srstands for...

Tài liệu Báo cáo khoa học: "Improving Word Representations via Global Context and Multiple Word Prototypes" pdf

... incorporating both local and global document context, and 2) accountsfor homonymy and polysemy by learning mul-tiple embeddings per word. We introduce anew dataset with human judgments on pairs ... tasks both as inputs to learningalgorithms and as extra word features in NLPsystems. However, most of these models arebuilt with only local context and one represen-tation per word. This is ... share acommon problem that each word is only repre-sented with one vector, which clearly fails to capturehomonymy and polysemy. Reisinger and Mooney(2010b) introduced a multi-prototype VSM whereword...

Tài liệu Báo cáo khoa học: "Non-Projective Dependency Parsing in Expected Linear Time" pptx

... accuracy, with especially good results for the labeledexact match score.1 IntroductionSyntactic parsing using dependency structures hasbecome a standard technique in natural languageprocessing with ... infact linear and that the system achieves state-of-the-art parsing accuracy. We discuss related workin Section 5 and conclude in Section 6.2 Background Notions2.1 Dependency Graphs and TreesGiven ... Σ as the stack and the listB as the buffer, and we will use the variables σ and β for arbitrary sublists of Σ and B, respectively.For reasons of perspicuity, we will write Σ with itshead (top)...

Tài liệu Báo cáo khoa học: "Quadratic-Time Dependency Parsing for Machine Translation" pdf

... 1357Table 5: MT experiments with and without a dependency language model. We use randomization tests (Riezler and Maxwell,2005) to determine signiﬁcance: differences marked with a (*) are signiﬁcant ... in multilingual dependency parsing. 2.1 O(n2)-time dependency parsing for MTWe now formalize weighted non-projective de-pendency parsing similarly to (McDonald et al.,2005b) and then describe ... MST parsing is almost as accurate as cubic-time depen-dency parsing in the case of English, and that itis more accurate with free word order languages.This paper applies MST parsing to MT, and...

Tài liệu Báo cáo khoa học: "Pseudo-Projective Dependency Parsing" doc

... (Sleator and Temperley, 1993), whichuses a dependency grammar of sorts, the probabilis-tic dependency parser of Eisner (1996), and morerecently proposed deterministic dependency parsers(Yamada and ... non-projectivestructures makes the parsing problem more com-plex and therefore compromises efficiency and inpractice also accuracy and robustness. Thus, mostbroad-coverage parsers based on dependency gram-mar ... 1999) and the finite-state dependency parser for Turkish by Oflazer (2003).This is in contrast to dependency treebanks, e.g.Prague Dependency Treebank (Hajiˇc et al., 2001b),Danish Dependency...

Báo cáo khoa học: "Cross-Domain Dependency Parsing Using a Deep Linguistic Grammar" docx

... 2007Nivre and McDonald,2008Section 4.2Section 4.3Figure 1: Different dependency parsing models and their combinations. DB stands for dependency backbone.not an issue for grammar-based parsing ... large-scale hand-crafted HPSG gram-mar. The dependency backbone of anHPSG analysis is used to provide generallinguistic insights which, when combined with state-of-the-art statistical dependency parsing ... sta-tistical approaches.3 Dependency Parsing with HPSGIn this section, we explore two possible applica-tions of the HPSG parsing onto the syntactic de-pendency parsing task. One is to extract...

Báo cáo khoa học: "Generation as Dependency Parsing" potx

... Generation as Dependency Parsing Alexander Koller and Kristina StriegnitzDept. of Computational Linguistics, Saarland University{koller|kris}@coli.uni-sb.deAbstractNatural-Language ... use a tree-adjoininggrammar without feature structures (Joshi and Sch-abes, 1997). Following Stone and Doran (1997) and Kay (1996), we enhance this TAG grammar with a syntax-semantics interface ... node and can be used by the other propagators. Thus itis sometimes even possible to ﬁnish parsing withoutcommitting to single lexical entries for some nodes.5 Generation as Dependency Parsing We...

Báo cáo khoa học: "Cross Language Dependency Parsing using a Bilingual Lexicon∗" docx

... let dependency parsing in multiple lan-guages be beneﬁcial with each other. In this pa-per, we study how to improve dependency parsing by using (automatically) translated texts attached with ... multiple Englishwords.4 Dependency Parsing: Baseline4.1 Learning Model and FeaturesAccording to (McDonald and Nivre, 2007), alldata-driven models for dependency parsing thathave been proposed ... percentage of tokens with correcthead. Two types of scores are reported for compar-ison: “UAS without p” is the UAS score withoutall punctuation tokens and “UAS with p” is the one with all punctuation...

Báo cáo khoa học: "Minimally Lexicalized Dependency Parsing" potx

... preceding nodes of node t (and t itself), the twosucceeding nodes of node n (and n itself), and their1We use “nil” to denote an empty list and a|A to denote alist with head a and tail A.206 87 ... de-scribe a base dependency parser and then report ex-perimental results.3.1 Base Dependency ParserWe built a parser based on the deterministic algo-rithm of Nivre and Scholz (Nivre and Scholz, ... state-of-the-artlexicalized parsers. Dependency parsing has been actively studied inrecent years (Yamada and Matsumoto, 2003; Nivre and Scholz, 2004; Isozaki et al., 2004; McDon-ald et al., 2005; McDonald and Pereira,...

Xem thêm