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

... representing the se-mantics of negation by revealing implicit positivemeaning. The main contributions are: (1) interpre-tation of negation using focus detection; (2) focus of negation annotation over ... se-mantic representation of the afﬁrmative counterpartafter applying the pseudo-relation NOT over the fo-cus of the negation. This fact justiﬁes and motivatesthe detection of the focus of negation. 4.2 ... semanticallyrepresent negation using focus detection. Implicitpositive meaning is identiﬁed, giving a thorough in-terpretation of negated statements.Due to the lack of corpora annotating the focus of negation, ...

Tài liệu Báo cáo khoa học: "Semantic Classification of Noun Phrases Using Web Counts and Learning Algorithms" ppt

... 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 the com-bined set of joining terms. ... accuracy of 45.7%, where we achieve a maximum accuracy of 38.1% on this dataset using a nearest neighbor algorithm. However, their tech-nique uses the cosine of the angle between the vec-tors of...

Tài liệu Báo cáo khoa học: "THE REPRESENTATION OF INCONSISTENT INFORMATION IN A DYNAMIC MODEL-THEORETIC SEMANTICS" ppt

... 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 model). Two mechanisms ... evaluation of a formula to cause the addition of information to the model. This interaction of the evaluation of a formula and the expansion of the model produces several linguistically interesting...

Báo cáo khoa học: "Semantic Tagging of Web Search Queries" ppt

... 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. Section 6 discusses ... CFSG 865We mentioned that one of the motivations of parsing search queries is to have a deeper under-standing of the structure of the query. The evaluation of such a deep model, however,...

Báo cáo khoa học: "Semantic Types of Some Generic Relation Arguments: Detection and Evaluation" pptx

... EvaluationSophia KatrenkoInstitute of InformaticsUniversity of Amsterdamthe Netherlandskatrenko@science.uva.nlPieter AdriaansInstitute of InformaticsUniversity of Amsterdamthe Netherlandspietera@science.uva.nlAbstractThis ... 7 binaryrelations from the training set of the SemEval-2007competition, all deﬁnitions of which share the re-quirement of the syntactic closeness of the argu-ments. Further, their deﬁnitions ... also necessary thatthe arguments of a relation are annotated using somesemantic taxonomy, such as WordNet (Fellbaum,1998). Our hypothesis is as follows: because of the positive and negative examples,...

Báo cáo khoa học: "Semantic Analysis of Japanese Noun Phrases: A New Approach to Dictionary-Based Understanding" doc

... 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 verbs, the ... Interpretation of N1 no N2 using a Dictionary Semantic-role information of nouns in an ordi- nary dictionary can be utilized to solve the dif- ficult problem in the semantic analysis of N1 1Although...

Báo cáo khoa học: "THE REPRESENTATION OF CONSTITUENT STRUCTURES FOR FINITE-STATE PARSING" pdf

... 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 derivation of an affixed ... languages is proposed, which are of limited degree of center embedding if the original expressions are noncenter-embedding. The method of constructing these representations is applicable to...

Báo cáo khoa học: "Semantic Transliteration of Personal Names" docx

... 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) assuming language of origin ... compares the MRR performance of the semantic transliteration systems with different prior information, using bigram language models. Soft decision refers to the incorporation of the lan-guage model...

Báo cáo khoa học: "Semantic enrichment of journal articles using chemical named entity recognition" pptx

... overall Sciborg workﬂow, standoffannotation is used to store the different sets of annota-tions. For the purposes of this paper, however, we makeuse of the inline output of Oscar, which is SciXML ... sequences of digitsafter the X is used to build a mapping of accept states toontology IDs (Table 2).To apply the recogniser: The input text is tokenized,and for each token a set of representations ... new DFA instance for eachDFA, and for each representation of the token, clone theDFA instance. If it does not accept the digit-sequence representation of the token, throw it away. If it is in...

Báo cáo khoa học: "Semantic classification of Chinese unknown words" pdf

... 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 nouns and 47.19% of verbs correctly. ... experi-ments, CiLin lexicons are divided into 2 sets: a training set of 80% CiLin words, a development set of 10% of CiLin words, and a test set of 10% CiLin words. All words in the test set are assumed...

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