Tài liệu Báo cáo khoa học: "Extracting Semantic Orientations of Words using Spin Model" pdf

... : ¯x new i =  x i x i exp  βx i  j w ij ¯x old j   x i exp  βx i  j w ij ¯x old j  . (7) 4 Extraction of Semantic Orientation of Words with Spin Model We use the spin model to extract semantic orienta- tions of words. Each spin has a direction taking one of two values: up or ... iteratively determines the semantic orientations of the words neighboring any...

Ngày tải lên: 20/02/2014, 15:20

... Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics, pages 400–407, Prague, Czech Republic, June 2007. c 2007 Association for Computational Linguistics Is the End of ... of size, to form a stochastic tree-substitution grammar (STSG). Since a parse tree of a sentence may be generated by several (leftmost) derivations, the probability of a tr...

Ngày tải lên: 20/02/2014, 12:20

... classes of the input analysis data (test data). 2. POPULARITY OF WORDS CONSIDERING TIME-SERIES VARIATION 2.1 Stability Classes of the Words: To judge the index of popularity of words with ... Number of correct words extracted by (DT) Precision = Total number of words extracted by (DT) Number of correct words extracted by DT) Recall = ❈ ❈ ❈ ❈ ❈ ❈ To...

Ngày tải lên: 20/02/2014, 16:20

... extension of textual entailment which consists of deciding, given a text T and an hypothesis H in dif- ferent languages, if the meaning of H can be inferred from the meaning of T. The adoption of entailment- based ... relaxed matches through semantic tags in place of “out of vocabulary” terms (e.g. unseen person names) is an effective way to improve CLTE performance, even at t...

Ngày tải lên: 19/02/2014, 19:20

... the notion of primary roles, and each interval generates a sequence of secondary roles and syntactic constituents using local features. The global role ordering consists of the sequence of primary ... relation of an argument to its head in the dependency parse tree, (ii) head: head word of the argument, and (iii) pos-head: Part -of- Speech tag of head. Algorithm 1 describes th...

Ngày tải lên: 19/02/2014, 19:20

... baseline performance. Next, we did experiments using all of the continuous lexical sequences and using all of the POS tags sequences within a radius of n words from each CK as features (n=1,2,3,4,5). ... word. By using long-distance- words sequences instead of single keywords, we can keep the precision value from dropping seriously low. The comparison lexicon finally...

Ngày tải lên: 20/02/2014, 04:20

... candidate, we use continuous words sequence within the radius of 3 (the window size of 7) of each keyword in the sentence; we expe- rimented with radius options of 2, 3, and 4 and we achieved ... tagger of Korean does not pro- vide any comparative and superlative tags be- cause the analysis of Korean comparative is much more difficult than that of English. The major challe...

Ngày tải lên: 20/02/2014, 09:20

... PART -OF, book#1] 1.14 10 (hints, PART -OF, booklet) (soup recipes, PART -OF, book) (information, PART -OF, instruction manual) (extensive expert analysis, PART -OF, book) [compound#2, PART -OF, ... corpus. The semantic classes of x and y are then inferred using concep- tual density (Agirre and Rigau 1996), a Word- Net-based measure applied to all instantiation of x and y in t...

Ngày tải lên: 20/02/2014, 12:20

... perform supervised classification of pairs of phrases into semantic classes. To do this, we will assign features to each pair of phrases, which may be predictive of their semantic rela- tionship, then ... Labeling WordNet is a large lexical database of English words. In addition to defining several hun- dred thousand words, it defines synonym sets, or synsets, of words that r...

Ngày tải lên: 20/02/2014, 12:20

... the processing of apicoplast protein leader sequence. Inhibition of any of these activities could contribute to MA interference in the maturation of the parasite. Polypharmacology of MA The observed ... on the structure of the available inhibitors of cathepsin D [19], a lysosomal protease of mamma- lian cells, and chalcones and phenothiazines have been assayed as inhibitors o...

Ngày tải lên: 14/02/2014, 14:20