Báo cáo khoa học: "Unsupervised Analysis for Decipherment Problems" pot

... initially to be uniform2. for several iterations do:a. set up a count(, ) table with zero entriesb. for = 1 toQ[ ,1] = b( boundary)c. for = 2 to for = 1 toQ[ , ] = 0 for = 1 toQ[ , ] += ... 1 toQ[ , ] += Q[ , ] b( ) s( )d. for = 1 toR[ , ] = b(boundary )e. for = to 1 for = 1 toR[ , ] = 0 for = 1 toR[ , ] += R[ , ] b( ) s( )f. for = 1 to for = 1 tocount( , ) += Q[ , ] R[ ... 499–506,Sydney, July 2006.c2006 Association for Computational LinguisticsUnsupervised Analysis for Decipherment ProblemsKevin Knight, Anish Nair, Nishit RathodInformation Sciences Instituteand Computer...

Báo cáo khoa học: "Unsupervised Methods for Head Assignments" potx

... syntac-tic information for transforming constituency tree-banks to dependency structures (Nivre et al., 2007)or richer syntactic representations (e.g., Hocken-maier and Steedman, 2007). For the ... dependencies for the same sentences as given by the Tiger depen-dency bank. Detailed analysis of the differencesin head assigments between the two approachesis left for future work; for now, we ... annotated in PARC 700 De-pendency Bank (see section 5).Automatic methods for identifying heads aretherefore of interest, both for practical and morefundamental linguistic reasons. In this paper...

Tài liệu Báo cáo khoa học: "Unsupervised Search for The Optimal Segmentation for Statistical Machine Translation" doc

... 31–36,Uppsala, Sweden, 13 July 2010.c2010 Association for Computational LinguisticsUnsupervised Search for The Optimal Segmentation for StatisticalMachine TranslationCos¸kun Mermer1,3and ... segmentationschemes can outperform a straightforward linguis-tic morphological segmentation, e.g., (Habash andSadat, 2006), and (ii) it may result in even worseperformance than a word-based system, ... compared to another.3 MethodMaximizing translation performance directlywould require SMT training and decoding for each segmentation hypothesis considered, whichis computationally infeasible....

Báo cáo khoa học: "Text Analysis for Automatic Image Annotation" doc

... 2007.c2007 Association for Computational LinguisticsText Analysis for Automatic Image AnnotationKoen Deschacht and Marie-Francine MoensInterdisciplinary Centre for Law & ITDepartment ... growing bulk of un-structured information such as text, images andvideo, a situation witnessed in many domains (news,biomedical information, intelligence information,business documents, etc.). ... etc.). This growth comes alongwith the demand for more effective tools to searchand summarize this information. Moreover, there isthe need to mine information from texts and imageswhen they contribute...

Báo cáo khoa học: "Topic Analysis for Psychiatric Document Retrieval" potx

... Linguistics, pages 1024–1031,Prague, Czech Republic, June 2007.c2007 Association for Computational LinguisticsTopic Analysis for Psychiatric Document Retrieval Liang-Chih Yu*‡, Chung-Hsien Wu*, Chin-Yew ... to different suggestions decided by experts. Therefore, an ideal retrieval system for consultation documents should consider such topic information so as to improve the retrieval precision. ... extraction of topic informa-tion is described briefly. The detailed process is described in (Wu et al. 2005a) for symptom and relation identification, and in (Yu et al., 2007) for event identification....

Báo cáo khoa học: "Resource Analysis for Question Answering" doc

... document for almost half of the questions. Note that for mostsystems, the retrieval performance should be supe-rior since queries are usually more refined and addi-tional query expansion is performed. ... sources contain-ing astronomy information (www.astronomy.com)and detailed information about the fifty US states(www.50states.com).Since gazetteers provide up-to-date information,some answers will ... performbetter (Lin and Katz, 2003).Definitional questions (“What is X?”, “Whois X?”) are especially compatible with structuredresources such as gazetteers and encyclopedias.The top performing...

Tài liệu Báo cáo khoa học: "Tabular Algorithms for TAG Parsing" potx

... (Shieber et al., 1995), where items are called formula schemata, deduc- tion steps are inference rules, hypothesis are ax- ioms and final items are goal formulas. A parsing schema can be generalized ... taken place in the node N r and therefore further adjunctions on the same node are forbidden. A value of false indicates that no adjunction was performed on that node. In this case, during ... "CYK $'CYK = { [R ~,0,n [ -,-[adj]la e I } The hypotheses defined for this parsing system are the standard ones and therefore they will be omitted in the next parsing systems described...

Báo cáo khoa học: Quantitative analysis of ultrasensitive responses pot

... beenconfirmed experimentally for allosteric enzymes [37], for Senseless-induced transcription [38], for mTOR-induced DNA synthesis [39], for insulin-induced DNAsynthesis [40] and for phosphatidic acid-induced1-phosphatidylinositol ... local analysis for which stimuli ultrasensitivity is especially pro-nounced. Based on the preceding discussion, onemay conclude that the Hill approach is inappropriate for the quantitative analysis ... ultrasensitivity.Similar conclusions also hold for an alternative defini-tion of the Hill coefficient proposed by Goldbeter &Koshland [12] for the analysis of responses, whoseshape differs from...

Báo cáo khoa học: "Morphological Cues for Lexical Semantics" pot

... performed with only coarse-grained semantic information about individual words. For example, a system could utilize word frequency and a word cooccurrence matrix in order to perform informa- ... semantic information. Word sense disambiguation for the bases and derived forms that could not be resolved using part- of-speech tags was not performed. However, there exist systems for such ... the morphological analyzer. For example, -Nize could not be stripped from hypoth- esize because Alvey failed to reconstruct hypothesis from hypothes. However, for the affixes discussed...

Báo cáo khoa học: "Discriminative Reranking for Semantic Parsing" pot

... shown for increasing valuesof n. The trends for CLANG and GEOQUERY aredifferent: small values of n show signiﬁcant im-provements for CLANG, while a larger n is neededto improve results for ... SCISSOR for reranking, for afull description of SCISSOR see Ge and Mooney(2005).In SCISSOR, the generation of semantic labelson modiﬁers are constrained by semantic subcat-egorization frames, for ... precision, whichis important for semantic parsing, it also limitsits recall. To generate plenty of candidate SAPTs for reranking, we extended the back-off levels for the parameters generating...

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