Báo cáo khoa học: "Improving data-driven dependency parsing using large-scale LFG grammars" pptx

... incre- mental dependency parsing. Computational Linguis- tics, 34(4). 1595 Joakim Nivre. 2009. Parsing Indian languages with MaltParser. In Proceedings of the ICON09 NLP Tools Contest: Indian Language Dependency ... Joakim Nivre. 2009. Dependency Parsing. Synthesis Lectures on Human Language Technologies. Morgan and Claypool Publishers. Seth Kulick, Ryan Gabbard, and Mitch Marcus. 2...

Ngày tải lên: 30/03/2014, 21:20

... Introduction Syntactic parsing using dependency structures has become a standard technique in natural language processing with many different parsing models, in particular data-driven models that ... in data-driven dependency parsing is the treatment of discontinuous syntactic constructions, usually modeled by non-projective dependency trees, as illustrated in Figure 1. In a...

Ngày tải lên: 20/02/2014, 07:20

... work have been focusing on constituent-based parsing, while the domain adaptation of the dependency parsing has not been fully explored. Taking a different approach towards parsing, grammar-based ... and McDonald, 2008 Section 4.2 Section 4.3 Figure 1: Different dependency parsing models and their combinations. DB stands for dependency backbone. not an issue for grammar-based pa...

Ngày tải lên: 08/03/2014, 00:20

... this makes it possible to 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 ... multiple English words. 4 Dependency Parsing: Baseline 4.1 Learning Model and Features According to (McDonald and Nivre, 2007), all data-driven models for dependency parsing...

Ngày tải lên: 17/03/2014, 01:20

... Korea, 8-14 July 2012. c 2012 Association for Computational Linguistics Semi-supervised Dependency Parsing using Lexical Affinities Seyed Abolghasem Mirroshandel †, Alexis Nasr † Joseph Le Roux  † Laboratoire ... second one concerns low frequency, low accuracy dependency types. Lines 2 and 3, respectively attachment of the preposition ` a to a verb and the subject dependency illus...

Ngày tải lên: 30/03/2014, 17:20

... the case of dependency parsing for Czech, (McDonald et al., 2005b) even outperforms projective parsing, and was one of the top systems in the CoNLL-06 shared task in multilingual dependency parsing. 2.1 ... score each dependency relation using a stan- dard linear model s(i, j) = λ ·f(i, j) (1) whose weight vector λ is trained using MIRA (Crammer and Singer, 2003) to opti- mize...

Ngày tải lên: 20/02/2014, 07:20

... intro- duce the data-driven dependency parser used in the latter experiments. 3 Memory-Based Dependency Parsing In the experiments below, we employ a data-driven deterministic dependency parser ... Conclusion We have presented a new method for non-projective dependency parsing, based on a combination of data-driven projective dependency parsing and graph transformation te...

Ngày tải lên: 20/02/2014, 15:20

... sometimes even possible to finish parsing without committing to single lexical entries for some nodes. 5 Generation as Dependency Parsing We will now show how TDG parsing can be used to enumerate ... Dependency Grammar These factors are exactly the same that make depen- dency parsing for free word order languages diffi- cult, and it seems worthwhile to see whether op- timized parser...

Ngày tải lên: 08/03/2014, 07:20

... unlabeled parsing, we perform labeled parsing by augmenting the LeftArc and RightArc actions with the set of dependency labels. Hence our work is in line with Titov and Henderson (2007) in using ... (monolingual) shift-reduce parsing. In Proceedings of EMNLP, pages 1222–1231, Singapore. Richard Johansson and Pierre Nugues. 2007. Incre- mental dependency parsing using online lear...

Ngày tải lên: 23/03/2014, 16:20

... investigation into the ef- fectiveness of lexicalization in dependency parsing instead of phrase-structure parsing. Usual depen- dency parsing cannot utilize phrase categories, and thus relies ... of lexicalization. 3 Minimally Lexicalized Dependency Parsing We present a simple method for changing the de- gree of lexicalization in dependency parsing. This method restricts the us...

Ngày tải lên: 23/03/2014, 18:20