Báo cáo khoa học: "A Bag of Useful Techniques for Efficient and Robust Parsing" ppt

... A Bag of Useful Techniques for Efficient and Robust Parsing Bernd Kiefer t, Hans-Ulrich Kriegert, John Carroll $, and Rob Malouff IGerman Research Center for Artificial Intelligence ... $Cognitive and Computing Sciences, University of Sussex Falmer, Brighton BN1 9QH, UK *Center for the Study of Language and Information, Stanford University Ventura Hall, Stanford, CA 94305-4115, ... disjunctive normal form (DNF). Of course, the ratio of the number of rules and lexical entries in the original grammar and the DNFed grammar depends on the 'style' of the grammar writer,...

Báo cáo khoa học: "A Comparison of Chinese Parsers for Stanford Dependencies" ppt

... only and exclude gen-eration of basic Stanford dependencies (for constituent parsers) and part -of- speech tagging (for dependency parsers).3 ResultsTable 3 tabulates efﬁciency and performance for ... 3: Performance and efﬁciency for all parsers on CTB data: unlabeled and labeled attachment scores (UAS/LAS)are for both development and test data sets; parsing times (minutes:seconds) are for ... model (Koo and Collins,2010) for graph-based dependency parsing (McDon-ald and Pereira, 2006). Therefore, we deemed it im-portant to re-evaluate the performance of constituent and dependency...

Báo cáo khoa học: "A Class of Submodular Functions for Document Summarization" pot

... in NeuralInformation Processing Systems.J. Carbonell and J. Goldstein. 1998. The use of MMR,diversity-based reranking for reordering documents and producing summaries. In Proc. of SIGIR.A. ... Takamura and M. Okumura. 2009. Text summariza-tion model based on maximum coverage problem and its variant. In Proceedings of the 12th Conference of the European Chapter of the Association for Compu-tational ... bound, and in most cases the quality of the solution obtained willbe much better than this bound suggests. Of course, none of this is useful if the objectivefunctionFis inappropriate for the...

Báo cáo khoa học: "A Figure of Merit Technique for the Resolution of Non-Grammatical Ambiguity" ppt

... BUILDING(s) (of) ONE/ALONE (of) DOUBLE/GEMINATE (of) ANNUAL/YEARS (of) LAYER/LAMELLA (of) (to /for) (by/with/as)LINE (of) THIN-CRUST(s) HOW/AS/BUT (of) (to /for) (by/with/as)FOSSILIZED (of) (to /for) - ... words" for the sake of simplicity. The target equivalents of the single meaning words have different degrees of probability of occurrence in the different fields of science. Therefore, an ... University of Washington, Linguistic and Engineering Studies in Automatic Translation of Scientific Russian into English, Department of Far Eastern and Slavic Languages and Department of Electrical...

Báo cáo khoa học: "A Comparison of Event Models for Naive Bayes Anti-Spam E-Mail Filtering" potx

... thedocument.From a linguistic point of view, a document ismade up of words, and the semantics of the doc-ument is determined by the meaning of the words and the linguistic structure of the document. TheNaive ... cases, precision and recall were differ-ent over the entire range of the number of selectedwords. In these cases we give the recall and accu-racy for the minimum number of words for whichaccuracy ... highest.Figures 1 and 2 show recall curves for the multi-variate Bernoulli model and three feature rank-ing functions in the multinomial model for Ling-Spam, and Figures 3 and 4 for PU I .Some...

Báo cáo khoa học: "A Logic of Semantic Representations for Shallow Parsing" pdf

... a41to the first child of thatnode (i.e. the node 21, labelled with “fat”) and a42to the node 22, and so forth. g will map x1 and x3to x, and x6 and x7to y, and so on. And σ will map each ... of choices for the subsets Sin condition 2 of Def. 7, and there is only a finite set of choices of new dom-inance atoms that satisfy condition 3. Therefore,the set of solved forms of ϕ is finite.456Let’s ... names, and we have fixed therelative scope of the two quantifiers. Each of thesesolved forms now stands for a separate class of models; for instance, the first model in Fig. 1 isa model of (7),...

Tài liệu Báo cáo khoa học: Structural features of proinsulin C-peptide oligomeric and amyloid states pptx

... and a widerange of spectroscopic techniques. Suitable methods for investigation of the secondarystructure and morphology of such structures, however,require the presence of large amounts of ... conditions (B), and of 100 lMC-peptide in the presence of insulin (C) and of 100 lM C-peptide in the presence of NaCl and formamide (D) under native conditions.J. Lind et al. Structure of C-peptide ... at1 nm bandwidth and three scans were collected and aver-aged for each experiment.ATR-IR spectroscopyAliquots of samples were taken from each of the samplesused for CD spectroscopy and dried...

Tài liệu Báo cáo khoa học: "The Use of Shared Forests in Tree Adjoining Grammar Parsing" pptx

... state set of of Me,. IIow- ever, unlike the case of the cfg shared forest grammar, the extraction of individual parses for the input w does not simply involve reading off a derivation of Gw. ... intersection of L(G) and L(Mw). P includes the following set of productions for the start symbol S' iS'[] , (T, qo, q/)[r/] I q; e F and t/is root of initial tree In addition, for each ... states of Ma. correspond to the non- terminal and terminal symbols of Gw. This trans- forms the question of determining whether a symbol is useful into a reachibility question on the graph of...

Báo cáo khoa học: "A Probabilistic Context-free Grammar for Disambiguation in Morphological Parsing" pdf

... as most likely member of a set of alternatives for 92% of the test words. For a proper judgement of this performance, the percentage must be compared with the chances of selecting the most ... complete and more reliable, but as a result of these problems, the collection of fre- quency information became a time-consuming and error-sensitive job: a lot of work had to be done by hand. ... and M. Stokhof, editors, Foundations of Pragmatics and Lexical semantics, 1987. [Nunn and van Heuven, 1993] A. Nunn and V. van Heuven. MORPHON, lexicon-based text-to- phoneme conversion and...

Báo cáo khoa học: "A Joint Rule Selection Model for Hierarchical Phrase-based Translation" pptx

... clues from the rich context infor-mation.3 Model Training of CBSM and CBTM3.1 The acquisition of training instancesCBSM and CBTM are trained by ME approach for the binary classiﬁcation, where ... constructed for the training of CBSM and CBTM.Let s and t be the source sentence and targetsentence, W be the word alignment between them,rsbe a source-side rule that pattern-matches asub-phrase of ... listed in Table 1 whereXP+ denotes the approach in (Marton and Resnik,2008) and TOFW (topological ordering of func-tion words) stands for the method in (Setiawan etal., 2009). As (Xiong et al.,...

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