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

... Linguistics Improving Arabic Dependency Parsing with Form-based and Functional Morphological Features Yuval Marton T.J. Watson Research Center IBM yymarton@us.ibm.com Nizar Habash and Owen Rambow Center ... Marton, Nizar Habash, and Owen Rambow. 2010. Improving Arabic dependency parsing with inflec- tional and lexical morphological features. In Proceed- ings of...

Ngày tải lên: 30/03/2014, 21:20

... templates include unigram word, POS-tag and dependency labels of S 0h2 , S 0l2 , S 0r2 and N 0l2 , as well as POS-tag combinations with S 0 and N 0 . Set of dependency labels with S 0 and N 0 As a more global ... perform unlabeled parsing, we perform labeled parsing by augmenting the LeftArc and RightArc actions with the set of dependency labels. Hence our work is in...

Ngày tải lên: 23/03/2014, 16:20

... incorporating both local and global document context, and 2) accounts for homonymy and polysemy by learning mul- tiple embeddings per word. We introduce a new dataset with human judgments on pairs ... tasks both as inputs to learning algorithms and as extra word features in NLP systems. However, most of these models are built with only local context and one represen- tation per...

Ngày tải lên: 19/02/2014, 19:20

... accuracy, with especially good results for the labeled exact match score. 1 Introduction Syntactic parsing using dependency structures has become a standard technique in natural language processing with ... in fact linear and that the system achieves state-of- the-art parsing accuracy. We discuss related work in Section 5 and conclude in Section 6. 2 Background Notions 2.1 Depe...

Ngày tải lên: 20/02/2014, 07:20

... 1357 Table 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(n 2 )-time dependency parsing for MT We now formalize weighted non-projective de- pendency parsing similarly to (McDonald et al....

Ngày tải lên: 20/02/2014, 07:20

... (Sleator and Temperley, 1993), which uses a dependency grammar of sorts, the probabilis- tic dependency parser of Eisner (1996), and more recently proposed deterministic dependency parsers (Yamada and ... non-projective structures makes the parsing problem more com- plex and therefore compromises efficiency and in practice also accuracy and robustness. Thus, most broad-cove...

Ngày tải lên: 20/02/2014, 15:20

... 2007 Nivre 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 parsing ... large-scale hand-crafted HPSG gram- mar. The dependency backbone of an HPSG analysis is used to provide general linguistic insights which, when combined with state-of-the-art st...

Ngày tải lên: 08/03/2014, 00:20

... Generation as Dependency Parsing Alexander Koller and Kristina Striegnitz Dept. of Computational Linguistics, Saarland University {koller|kris}@coli.uni-sb.de Abstract Natural-Language ... use a tree-adjoining grammar 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 interf...

Ngày tải lên: 08/03/2014, 07:20

... 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 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 t...

Ngày tải lên: 17/03/2014, 01:20

... preceding nodes of node t (and t itself), the two succeeding nodes of node n (and n itself), and their 1 We use “nil” to denote an empty list and a|A to denote a list with head a and tail A. 206 87 ... de- scribe a base dependency parser and then report ex- perimental results. 3.1 Base Dependency Parser We built a parser based on the deterministic algo- rithm of Nivre and...

Ngày tải lên: 23/03/2014, 18:20