Báo cáo khoa học: "WORD-SENSE DISAMBIGUATION METHODS USING STATISTICAL" pot

... lacked the formalization of a structural disambiguation process, that is, they did not specify what kind of knowledge can be used in what way for structural disambiguation. In CDG parsing, any ... which grows at a faster than exponential rate (Knuth 1975). A parser should be provided with a disambiguation mechanism that does not involve generating such a combinatorial number of pa...

Ngày tải lên: 08/03/2014, 18:20

... WORD-SENSE DISAMBIGUATION USING STATISTICAL METHODS Peter F. Brown, Stephen A. Della Pietra, Vincent J. Della Pietra, and ... informative question. Given a potential informant such as the first noun to the right, we can construct a question that has high mutual information with the translation of w by using the flip-flop ... determined by those dictionaries. llere, in contrast...

Ngày tải lên: 08/03/2014, 07:20

... Lexical Disambiguation Using Constraint Handling In Prolog (CHIP) * George C. Demetriou Centre for Computer ... by a set of these primitives. Several researchers have been experimented with lexical disambiguation using MRDs, including [Lesk, 1986; Wilks et al., 1989; McDonald et al., 1990; Veronis ... (help making choices), (3) higher order predicates (providing opti- mi...

Ngày tải lên: 22/02/2014, 10:20

... Sense Disambiguation Using Semantic Relations and Adjacency Information Anil S. Chakravarthy MIT Media Laboratory ... organized as follows. The next section reviews existing approaches to disambiguation with emphasis on directly related methods. Section 3 describes in more detail the heuristics and adjacency ... by the disambiguator. 293 2 Previous Work on Disambiguation In...

Ngày tải lên: 08/03/2014, 07:20

... against two classical estimation methods, the MLE method and Katz's back-off scheme, on a pseudo-word disambiguation task. We observed that the similarity-based methods perform much better ... ities. In what follows, we focus on probabilistic similarity-based estimation methods. We compared several such methods, in- cluding that of Dagan, Pereira, and Lee (1994) and the co...

Ngày tải lên: 31/03/2014, 21:20

... and method. • TRG: The models were trained using only the real-error corpus (baseline). • SRC: Trained using only the pseudo-error corpus. • ALL: Trained using the real-error and pseudo- error corpora ... task is hindered by the difficulty of collecting large error cor- pora. We tackle this problem by using pseudo- error sentences generated automatically. Fur- thermore, we apply domain...

Ngày tải lên: 19/02/2014, 19:20

... classes. The method is exper- imentally tested using a manually labeled set of positive and negative words. It out- performs the state of the art methods in the semi-supervised setting. The results ... achieves better performance by only using WordNet synonym, hypernym and similar to rela- tions. Adding co-occurrence statistics slightly im- proved performance, while using glosses did...

Ngày tải lên: 20/02/2014, 04:20

... a system that creates a headline for an English news- paper story using linguistically-motivated heuris- tics to choose a potential headline. Jin and Hauptmann (2002) proposed a probabilistic ... this, four different evaluation methods were applied to choose the best headline that reflects the idea of the document among the nominated list. The task of these methods is to catch the...

Ngày tải lên: 20/02/2014, 05:20

... considered inappropriate for diverse organisations. Research summary pages using stylesheets can offer alternative methods of information access and browsing, aiding navigation and providing ... parsed using the RASP parser (Briscoe and Carroll, 2002) and key- phrases are extracted by pattern matching. From the publication entry above, the extracted title: “An overview of evaluation me...

Ngày tải lên: 20/02/2014, 09:20

... discrimina- tive methods which learn the difference between the best parse and next-best parses. While our reranking model using generation probability is quite simple, we can easily verify our hypothesis that ... to rerank the results obtained using an existing machine learning based parsing method showed that our method can im- prove the accuracy of the results obtained using the ex...

Ngày tải lên: 20/02/2014, 12:20