Báo cáo khoa học: "Comparing the Accuracy of CCG and Penn Treebank Parsers" docx
Báo cáo khoa học: "Comparing the Accuracy of CCG and Penn Treebank Parsers" docx
... Australiajames@it.usyd.edu.auAbstractWe compare the CCG parser of Clark and Curran (2007) with a state -of -the- art Penn Treebank (PTB) parser. An accuracy com-parison is performed by converting the CCG derivations into ... Hocken-maier and Steedman (2007) invested a significantamount of time and effort in creating the mapping.Second, some of the labels in the PTB do not ap-pear in CCGbank, for example the QP label, and these ... accuracy of the CCG parser. Results are calcu-lated using both gold standard and automaticallyassigned POS tags; # is the number of sentencesin the sample, and the % column gives the samplesize...
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Tài liệu Báo cáo khoa học: "Evaluating the Accuracy of an Unlexicalized Statistical Parser on the PARC DepBank" docx
... fifth of DepBank is held out to optimize the speed and accuracy of the three systems. Theyconclude from the results of these experiments that the cut-down XLE parser is two-thirds the speed of ... in the PoS tags and by the need to balancedepth of analysis against the size of the deriva-tion space. On the Susanne corpus, the geometricmean of the number of analyses for a sentence of length ... differin the order of application of the same rules and also conditions rule application on the PoS tag of the lookahead token.When there is no parse rooted in the start cat-egory, the parser...
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Báo cáo khoa học: "Improving the Accuracy of Subcategorizations Acquired from Corpora" pdf
... lexicon of the tar-get grammar,4 and make use of the existing sets of 4When the lexicon is less accurate, I can determine the number of clusters using other algorithms (Hamerly, 2003).SCFs for the ... cm. I then initialize the num-ber of clusters k to the number of cm.I finally update the acquired SCFs using the ob-tained clusters and the confidence values of SCFsin this order. I call the ... cut-offB: centroid cut-off* 0.05C: centroid cut-off 0.05D: confidence cut-off 0.05XTAG ERGFigure 5: Precision and recall of the resulting SCFs using confidence cut-off and centroid cut-off: the XTAG...
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Tài liệu Báo cáo khoa học: "REAPING THE BENEFITS OF INTERACTIVE AND SEMANTICS*" pdf
... semantics. ASLC, on the other hand, does not attempt to at- tach the VP to the S until the very end (Fig lb). Thus even the thematic role of the subject NP re- mains unresolved until the very end. ... COMMUNICATE The content of the communication between syntax and semantics is a set of grammatical relations and thematic roles. Syntax talks about the grammati- cal relations between the parts of a ... variant of left-corner parsing to define the points at which syntax and semantics should interact, an account of grammat- ical relations and thematic roles to define the content of the communication,...
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Báo cáo khoa học: "ON THE INTONATION OF MONO- AND DI-SYLLABIC WORDS WITHIN THE DISCOURSE FRAMEWORK OF CONVERSATIONAL GAMES ON THE INTONATION OF MONO- AND DI-SYLLABIC WORDS WITHIN THE DISCOURSE FRAMEWORK OF CONVERSATIONAL GAMES " pot
... marked on it and has to tell another person how to draw the path onto a similar map. Neither par- ticipant can see the other's map. The nature of the map task is such that from the conversations ... played and is similar to the core speech act in Traum and Allen (1991). The ensuing response and feedback moves function as presentation and acceptance phases, in the terms of Clark and ... naturally consists of many Instruction games. The structure of games allows for nesting of games and looping of response and feedback moves within games ~ The prototypical game consists of two or...
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Báo cáo khoa học: "Lexical Disambiguation: Sources of Information and their Statistical Realization" docx
... based on either understanding of the text or frequency characteristics of it. One kind of information relates to the under- standing of the meaning of the text, using semantic and pragmatic ... house of the soviet parliament acquired a reputation as an investi- gator of the corruption in Kazakhstan. The two most frequent senses of the ambiguous noun '_hayer' correspond to the ... country rather than entering it. Another kind of information source, which was originally raised in the psycholinguistic literature, relates to the relative frequencies of word senses and associations...
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Báo cáo khoa học: "Parsing the WSJ using CCG and Log-Linear Models" pptx
... word of the lex-ical category, f is the lexical category, s is the argu-ment slot, hais the head word of the argument, and l indicates whether the dependency is long-range.For example, the ... and the empirical expected value, of each feature (to calcu-late the gradient); and the value of the likelihoodfunction. For the normal-form model, the empiri-cal expected values and the likelihood ... (and only include the head of the lex-ical category, and not the head of the argument);these count the number of words (0, 1, 2 or more),punctuation marks (0, 1, 2 or more), and verbs (0,1...
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Báo cáo khoa học: Comparing the substrate specificities of cytochrome c biogenesis Systems I and II docx
... they are only taken toindicate the presence of the specific holocytochromeunder investigation if the features of the spectrum, interms of wavelength maxima, and the position and intensity of ... pylori. The two systems caneach be subdivided into proteins whichcontribute to the handling of heme and ligation of heme to the apocytochrome, and those involved in the provision of reductantto the ... therefore, the value inTable 1 for the C38A variant of cytochrome c550matured by System I represents the lower limit of detectability and the experimental error. Notably, the production of the AXXCH...
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Tài liệu Báo cáo khoa học: Seeking the determinants of the elusive functions of Sco proteins pptx
... contributions of Sco1 and Sco2 to this process. Our understanding of these and other events awaits the development of in vitro systems in which stabilized Cox2 can beexpressed and studied. The CuAassembly ... detected in the redox state of the cysteines of Sco1 in both Sco1 and Sco2 patientbackgrounds, and these correlate well with the severity of the observed cellular copper deficiency [17]. The thiol-disulfide ... function of the CXXXCmotif of human Sco proteins could therefore be impli-cated not only in the maturation of the CuAsite of Cox2 but also in the maintenance of cellular copperhomeostasis.The...
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Tài liệu Báo cáo khoa học: Glucuronate, the precursor of vitamin C, is directly formed from UDP-glucuronate in liver pptx
... procedure. The finding that the effect of CoASH depends on the presence of ATP (althoughnot of other NTPs such as GTP and UTP; notshown) suggests that it is indirectly mediated via the formation of ... catalysing the forma-tion of glucuronate and glucuronate 1-phosphate werepresent in the lumen of the ER (or had their catalyticsite oriented towards the lumen of this organelle), wechecked the effect ... in the presence of 10 mMATP-Mg and in the absence (black bars) or presence (grey bars) of 1mM metyrapone (A). The effect of the heated high-speed super-natant was further analysed in the...
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