Báo cáo khoa học: "Parsing Noun Phrase Structure with CCG" potx

... 335–343, Columbus, Ohio, USA, June 2008. c 2008 Association for Computational Linguistics Parsing Noun Phrase Structure with CCG David Vadas and James R. Curran School of Information Technologies University ... effectiveness of our modified cor- pus and novel features, with an increase in parser performance of 1.51%. 1 Introduction Internal noun phrase (NP) structure is not re...

Ngày tải lên: 31/03/2014, 00:20

... developed from the Penn Treebank, to represent noun phrase structure more accurately. 240 2 Motivation Many approaches to identifying base noun phrases have been explored as part of chunking ... (88.91) By noun phrase 562 (489) 626 89.78 (78.12) By dependency, only annotated N Ps 578 (543) 627 92.19 (86.60) By noun phrase, only annotated N Ps 186 (162) 229 81.22 (70.74) Table...

Ngày tải lên: 23/03/2014, 18:20

... model so that a common 1 A base noun phrase, as defined in (Collins, 1999), is a noun phrase which does not directly dominate another noun phrase, unless that noun phrase is possessive. 680 1. NP NP NPB busloads PP of ... modifier /noun; the gold tree is a structured coordinate noun phrase where each word in the noun phrase is a noun. 9 Call these inconsistencies type...

Ngày tải lên: 31/03/2014, 01:20

... the antecedent for an NP, NP k , the closest preceding noun phrase that is classified as coreferent with it. 4 However, if no such preceding noun phrase exists, no antecedent is selected for NP k . ... coreference resolution of noun phrases. Computational Linguistics, 27(4):521–544. Veselin Stoyanov, Nathan Gilbert, Claire Cardie, and Ellen Riloff. 2009. Conundrums in noun phras...

Ngày tải lên: 07/03/2014, 22:20

... ‘New York State’ noun with a suffix: 䆩䡡·勬 ‘classifier’ noun with a prefix: 敏·䧥䧥 ‘mother-to-be’ verb with a suffix: 敧䃄·䑺 ‘automatize’ verb with a prefix: 䆓·噙 ‘waterproof’ adjective with a suffix: 䉅䏜·怮 ... structure of 䉂擌奒 ‘vice president’ can be represented with the tree in Fig- ure 1. Without a doubt, there is complete agree- NN ❧ ❧ ✱ ✱ JJf 䉂 NNf 擌奒 Figure 1: E...

Ngày tải lên: 17/03/2014, 00:20

... 14853-7501 yung@cs.cornell.edu Abstract Knowledge of the anaphoricity of a noun phrase might be profitably exploited by a coreference sys- tem to bypass the resolution of non-anaphoric noun phrases. Perhaps surprisingly, recent attempts ... demonstrate the ef- fectiveness of our approach. 1 Introduction Noun phrase coreference resolution, the task of de- termining which noun phrase...

Ngày tải lên: 31/03/2014, 03:20

... enormous phrase structure trees whose yield is the empty string (see Ristad, 1986a). Thus, a parser that used such a grammar must nonde- terministically postulate elaborate phrase structure ... process with reusable space resources. First, each principle of UFI can enforce nonlocal feature agree- ment in phrase structure. Ristad (1986b) shows how this causes NP-hardnees, whe...

Ngày tải lên: 31/03/2014, 17:20

... properties of the phrase pair (syntactic, semantic etc.), possibly in relation to its context, or supply- ing varying levels of abstraction (phrase- pair, deter- miner with noun, noun- phrase, sentence ... and phrase- pair segmenting structure of translation, as in Figure 4. Given σ, the phrase- pair emission part merely gener- ates the phrase- pairs utilising distributions from e...

Ngày tải lên: 20/02/2014, 04:20

... dependency structure with gap degree at most k in time O(n 5+2k ); (3) we generalise the previous parsers to be able to analyse not only well-nested structures, but also ill-nested structures with ... any constant k; and a new class of structures with gap de- gree up to k that includes some ill-nested structures. The third case includes all the gap degree k structures in a number of d...

Ngày tải lên: 17/03/2014, 22:20

... Steed- man, 2002; Clark and Curran, 2004b), and variants of phrase- structure grammar (Briscoe et al., 2006), including the phrase- structure grammar implicit in the Penn Treebank (Collins, 2003; ... example of this is from CCGbank (Hock- enmaier, 2003), where all modifiers in noun- noun compound constructions modify the final noun (be- cause the Penn Treebank, from which CCGbank is de...

Ngày tải lên: 23/03/2014, 18:20