Báo cáo khoa học: "Semantic Representation of Negation Using Focus Detection" pptx

... representing the se- mantics of negation by revealing implicit positive meaning. The main contributions are: (1) interpre- tation of negation using focus detection; (2) focus of negation annotation over ... se- mantic representation of the affirmative counterpart after applying the pseudo-relation NOT over the fo- cus of the negation. This fact justifies and motivates t...

Ngày tải lên: 30/03/2014, 21:20

... Over the set of 5 semantic rela- tions defined by Nastase and Szpakowicz (2003), they achieve an accuracy of 45.7% for the task of assigning one of 5 semantic relations to each of the 600 modifier-noun ... conditions, and again using all of the joining terms produced the best results. The SVM algorithm produced the best accuracy of all, achieving 50.1% accuracy using...

Ngày tải lên: 20/02/2014, 12:20

... talking. The addition of this new property expands the domain of the set of properties denoted by "John", thus forcing the expansion of the characteristic function of that set to specify ... elements. If the expansion of the model is not properly managed, the result of the evaluation of such a formula can be wrong (i.e. inconsistent with the contents of the m...

Ngày tải lên: 21/02/2014, 20:20

... the purpose of automatic tagging of the queries. We will define a set of probabilistic context-free rules, which generates bags (i.e. multi-sets) of words. Us- ing this new type of rule in ... the design and implementation of a parser for this kind of grammar. Section 5 gives an example of such a grammar designed for the purpose of automatic tagging of queries. Sectio...

Ngày tải lên: 08/03/2014, 00:20

... Evaluation Sophia Katrenko Institute of Informatics University of Amsterdam the Netherlands katrenko@science.uva.nl Pieter Adriaans Institute of Informatics University of Amsterdam the Netherlands pietera@science.uva.nl Abstract This ... 7 binary relations from the training set of the SemEval-2007 competition, all definitions of which share the re- quirement of the syntactic clos...

Ngày tải lên: 08/03/2014, 01:20

... good result both of DBA and SBA. The precision of DBA, the ratio of correct analyses to detected anal- yses, was 77% (=137/(137+19+21)); the re- call of DBA, the ratio of correct analyses ... information of nouns in an ordinary dictio- nary. 2 Semantic Roles of Nouns The meaning of a word can be recognized by the relationship with its semantic roles. In the case of...

Ngày tải lên: 08/03/2014, 06:20

... initial steps in the construction of such a model. The first step is to determine a method of represen- ting the class of constituent structures of the expressions of L without center embedding ... The derivation of E2* manifests first-degree center embedding of the category S*, as a result of the treatment of S as both a prefix and a suf- fix in G2*. However, no deri...

Ngày tải lên: 08/03/2014, 18:20

... decision of gender had led to deterioration in MRR performance of the male names compared to the case where no prior information was assumed. Soft decision of gender yielded further gains of 17.1% ... accuracies (%) using a 4-gram language model for the letter sequence of the source name in Latin script. Table 5 summarizes the gender detection accura- cies using Eq. (11...

Ngày tải lên: 17/03/2014, 04:20

... overall Sciborg workflow, standoff annotation is used to store the different sets of annota- tions. For the purposes of this paper, however, we make use of the inline output of Oscar, which is SciXML ... sequences of digits after the X is used to build a mapping of accept states to ontology IDs (Table 2). To apply the recogniser: The input text is tokenized, and for each token a se...

Ngày tải lên: 31/03/2014, 01:20

... classify 65.76% of adjectives, 71.39% of nouns and 52.84% of verbs. Future work will explore the use of the contextual information of the unknown words and the contex- tual information of the lexicons ... evaluation, any one of the categories of an am- biguous word is considered correct. 5.2 Result On the test set, the baseline predicts 53.50% of adjectives, 70.84% of...

Ngày tải lên: 31/03/2014, 03:20