báo cáo khoa học: "Constructing categories for polychotomous variates" pot

... with less than 5 categories, the value of h!h! for the equal percentiledistribution is closer to that for the optimal distribution and higher than that for thedistribution ... the ratio for thea Optimal discrete distribution found in this study is compared with those for some otherdiscrete distributions.Key words : Categories, polychotomous ... method which utilizes orthogonal transformations. Equal frequency values for response categories were taken to obtain initial t’s for iteration. The calculation of 1£;was...

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: "Unsupervised Analysis for Decipherment Problems" pot

... with downloadable fonts for viewing. However,they are difficult to handle by computer, for example,to build a full-coverage Hindi web-search engine, or topool Hindi corpora for training machine ... 499–506,Sydney, July 2006.c2006 Association for Computational LinguisticsUnsupervised Analysis for Decipherment ProblemsKevin Knight, Anish Nair, Nishit RathodInformation Sciences Instituteand Computer ... translation. Straightforward unsu-pervised learning techniques most often fail onthe first try, so we describe techniques for un-derstanding errors and significantly increasingperformance.1 IntroductionUnsupervised...

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

... treebank already comes with built-in head labels, but not for all categories. In this case thescore is computed only for the internal nodes that conform to the one head per node constraint.6 ConclusionsIn ... different scores of the RANDOM as-signment for the two languages can be explained5This procedure is not reported here for reasons of space,but it is available for other researchers (together with ... limits the usefulness of LTSGs for modeling the full complexity of natural languagesyntax; however, computationally, LTSGs havemany advantages over richer formalisms and for the current purposes...

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

... 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 ... 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-...

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 ... 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 ... parses can be adapted for semantic pars-ing, more concretely, for reranking the top SAPTsfrom the baseline model SCISSOR. The syntac-tic features introduced by Collins (2000) for syn-tactic parsing...

Báo cáo khoa học: "LR Parsers For Natural Languages" pot

... tree. This fact is desirable for progralnming languages. For natural languages, however, it is sometimes necessary for a parser to produce more than one parse tree. For example, consider the ... rule-schema and meta-rules for natural language in systems such as GPSG [7]. Acknowledgements I would like to thank Takehiro Tokuda, Osamu Watanabe, Jaime Carbonell and Herb Simon for thoughtful comments ... if natural languages are not context-free, a fairly comprehensive grammar for a subset of natural language suflicient for practical systems can be written in context.free phrase structure. lhtJ.%...

Báo cáo khoa học: "A FOUNDATION FOR SEMANTIC INTERPRETATION " pot

... before inten- sional logic or other flavors of logical forms could support the type of inference and problem solving that AI requires of its semantic representations; see Moore 1981 for ... compositionaiity by design. This fol- lows from the uniform typing; the correspondence bet- ween syntactic and semantic rules that maintains this uniformity; and there being a unique semantic object ... phrase, the book. From Table 3, the semantic type for the determiner She is a frame determiner function, in this case (the ?x), and the type for the noun book is a kind of frame, here (book...

báo cáo khoa học: " Likelihood ratios for genome medicine" potx

... plan. e third might be for a healthy patient looking for suggestions into lifestyle modiﬁ cations or information on long-term prognosis and early identiﬁcation of potential problems; this ... abutte@stanford.edu 1Department of Pediatrics and the Department of Medicine, Stanford University School of Medicine, 251 Campus Drive, MS-5415, Stanford, CA 94305-5479, USA Full list of author information ... Stanford University for computer support.Author details1Department of Pediatrics and the Department of Medicine, Stanford University School of Medicine, 251 Campus Drive, MS-5415, Stanford,...

Báo cáo khoa học: "Generalized Algorithms for Constructing Statistical Language Models" pdf

... finding all for a given is . Therefore,the total cost is . For all non-empty , we create a new state and for all we set . We create a transition, and for all such that ,we set . For all such ... recognition, information extraction, machinetranslation, or document classification. In all cases, alanguage model is used in combination with other in-formation sources to rank alternative hypotheses ... tech-nique for creating an exact representation of -gram lan-guage models by WFAs whose size is practical for offlineuse even in tasks with a vocabulary size of about 500,000words and for .Class-based...

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