Báo cáo khoa học: "Discovering the Discriminative Views: Measuring Term Weights for Sentiment Analysis" doc

... where the terms appear together. One way of measuring the prox- imity of terms is using the syntactic structures. Given the dependency tree of the text, we model the association between two terms ... is the frequency of w in d, | d | is the number of unique terms in d, avgdl is the average | d | of all documents, N is the number of doc- uments in the collection, df(w...

Ngày tải lên: 30/03/2014, 23:20

... localizing the estimation of idf to the documents of one or the other class and subtract- ing the two values. Therefore, the weight of term 1388 Table 2: SMART notation for inverse document frequency ... 1: SMART notation for term frequency vari- ants. max t (tf) is the maximum frequency of any term in the document and avg dl is the average number of terms in all th...

Ngày tải lên: 20/02/2014, 04:20

... 2006). Query and document weighings are provided in Equation (1): the dtu formula is applied to the documents, while the dtn formula is applied to the query; t the number of indexing terms, df j the number ... which Q  denotes the new query built from the previ- ous query Q, and w ij denotes the indexing term weight attached to the term t j in the document D i . By...

Ngày tải lên: 23/03/2014, 18:20

... unbounded, then it cannot be part of the innate Universal Gram- mar and must be learned. Even if the set is not un- bounded, the child is still left with the challenging task of determining ... information in conjunction with information about the subcategorization properties of the verb may be sufficient for learning verb features. This paper takes Gleitman's suggest...

Ngày tải lên: 17/03/2014, 08:20

... and the boundary words of the argument. On the target side, the trans- lation of the verbal predicate, the translation of the head word of the argument, as well as the boundary words of the translation ... in the argument reordering model. We extract features from both the source and target side. On the source side, the fea- tures include the verbal predicate, t...

Ngày tải lên: 19/02/2014, 19:20

... attached to the terms. Thus instead of terms A and B, the system processes terms (A.a) and (B,b) respectively, where a and b designate the weights of terms A and B. b) c) d) The extended ... value for each and-operator. The higher the p-value, the more similar • the corresponding operator will be to the com- pulsory Boolean and. Correspondingly, the smaller...

Ngày tải lên: 22/02/2014, 09:20

... the graph. Tree Tagger (Schmid, 1994) and then choosing the most likely tag for each word type. In this way, we avoid the overload of searching for the best tagging decisions at run-time at the ... translation hypotheses before LM querying 8 . The order of the additional LM is set to 10 in the Arabic-English evaluation and 7 in the English-French, as these appeared to be...

Ngày tải lên: 08/03/2014, 21:20

... for binding GST-IjBa in the presence and absence of ATP, and the value of a indicates whether the binding of one substrate (ATP) affects the affinity of the enzyme for the other substrate (GST-IjB ... block the activity of another IKK isoform, IKK1. Conse- quently, IjBa may still be phosphorylated by the IKK1 isoform when the IKK1 isoform is present and activ- ated in th...

Ngày tải lên: 16/03/2014, 11:20

... k  for some 0 < i ≤ n occurs in the reduced grammar. Note that the choice of the encoding of k is ir- relevant, as k = 1 is enough for the lower bound, and k only logarithmically influences the ... and membership for the various formalisms that embed UVG-dls. Unsurprisingly in the light of their importance in different fields, several authors have started in- vestigating...

Ngày tải lên: 16/03/2014, 23:20

... (F1–F7). The table shows that, overall the performance is better for the Europarl corpus than for CLUVI. For the Baseline and SV M 1 , SS [F1 + F2] gives bet- ter results than SVM. The inclusion of other ... corpora and the contribution the features exemplified in one baseline and six versions of the SVM model. The baseline is defined only for the English part of th...

Ngày tải lên: 17/03/2014, 04:20