Báo cáo khoa học: "A Novel Discourse Parser Based on Support Vector Machine Classiﬁcation" docx

... Singapore, 2-7 August 2009.c2009 ACL and AFNLPA Novel Discourse Parser Based on Support Vector Machine ClassiﬁcationDavid A. duVerleNational Institute of InformaticsTokyo, JapanPierre & ... Section 5 concludes thepaper.2 Building a Discourse Parser 2.1 Assumptions and RestrictionsIn our work, we focused exclusively on the secondstep of the discourse parsing problem, i.e., con-structing ... hierarchicaltext organization with strong applicationsin discourse analysis and text generation.We demonstrate automated annotation ofa text with RST hierarchically organisedrelations, with results...

Báo cáo khoa học: "A New Statistical Parser Based on Bigram Lexical Dependencies" potx

... 93) conditioned probabilities on non-terminal labels and part of speech tags alone. The SPATTER parser (Magerman 95; 3elinek et ah 94) does use lexical information, and recovers labeled constituents ... backed-off estimation strategy is used for mak- ing prepositional phrase attachment decisions. The idea is to back-off to estimates based on less context. In this case, less context means looking ... considered to be words or modifiers in the de- pendency model - but they do give strong indica- tions about the parse structure. Questions 4, 5 and 6 allow the parser to use this information....

Báo cáo khoa học: "A Non-negative Matrix Tri-factorization Approach to Sentiment Classiﬁcation with Lexical Prior Knowledge" potx

... SSMFLKConsistency MethodHomonic−CMNGreen FunctionSVMNaive BaysFigure 8: Accuracy results with increasing numberof labeled documents on Amazon dataset7 ConclusionThe primary contribution of ... assump-tion closely related to Singular Value Decomposi-tion (see also (Dhillon, 2001; Zha et al., 2001) formore on this perspective) while our model is based on Non-negative Matrix Factorization. ... related work in Section 2.Section 3 gives a quick background on Non-negative Matrix Tri-factorization models. In Sec-tion 4, we present a constrained model and compu-tational algorithm for...

Tài liệu Báo cáo khoa học: "Exploiting Syntactic and Shallow Semantic Kernels for Question/Answer Classiﬁcation" docx

... provide additionalinformation to BOW when used for question repre-sentation. This can be explained by considering thatanswer classification (restricted to description ques-tions) does not ... three phases: question pro-cessing, document retrieval and answer extraction(Kwok et al., 2001).Question processing is often centered on questionclassification, which selects one of k expected ... state-of-the-art accuracy on question classification. (b) PB predicative structuresare not effective for question classification but showpromising results for answer classification on a cor-pus of answers...

Báo cáo khoa học: "Generalizing over Lexical Features: Selectional Preferences for Semantic Role Classiﬁcation" docx

... new text,one may encounter similar expressions with newwords like Texas or Autumn.We propose a concrete classiﬁcation problem asour main evaluation setting for the acquired selec-tional preferences: ... (verb, syntactic function, noun)triples, and the correlation with human plausibil-ity judgement is used for evaluation. Resnik’sselectional preference scored best among class- based methods, but ... (1998).The application of selectional preferences to se-mantic roles (as opposed to syntactic functions)is more recent. Gildea and Jurafsky (2002) isthe only one applying selectional preferences...

Tài liệu Báo cáo khoa học: A novel electron transport system for thermostable CYP175A1 from Thermus thermophilus HB27 doc

... (0.1–1.6%) on b-carotene hydroxylation activity. The b-carotene hydrox-ylation reactions were carried out under the conditionsdescribed above, and the products were extracted withice-cold acetonitrile ... at high temperature.ResultsIsolation and identiﬁcation of the components ofthe CYP175A1 electron transport systemTo ﬁnd the electron donor of the electron transportsystem for CYP175A1, we ... the production ofzeaxanthin was ignored. In order to determine theoptimal conditions for the reconstitution system, theeffects of pH, Fdx, and Tween 20 on b-carotenehydroxylation activity...

Tài liệu Báo cáo khoa học: A novel splice variant of occludin deleted in exon 9 and its role in cell apoptosis and invasion docx

... h.Construction of expression vectors andtransfectioncDNA fragments representing the complete ORFs of occlu-din (GenBank accession no. NM002538) and occludinexon 9 deletion variant were cloned ... 2008 The Authors Journal compilation ª 2008 FEBSTo conﬁrm the effects of occludin on the cytoplas-mic calcium concentration, we analyzed calciumconcentrations by using X-rhod-1, a calcium indicator.X-rhod-1 ... invasive-ness, ERK1 ⁄ 2 activation, and modulation of apoptotic-related gene expression levels (Fig. 8D–F).DiscussionTJs are involved in cell adhesion and migration; theirdownregulation can cause epithelial...

Tài liệu Báo cáo khoa học: A novel tachykinin-related peptide receptor of Octopus vulgaris – evolutionary aspects of invertebrate tachykinin and tachykinin-related peptide ppt

... FEBS100806040200[%]10-1110-1010-910-810-710-6100806040200[%]10-1110-1010-910-810-710-6100806040200[%]10-1110-1010-910-810-710-6100806040200[%]10-1110-1010-910-810-710-6100806040200[%]10-1010-910-810-710-610-5100806040200[%]10-1110-1010-910-810-710-6100806040200[%]10-1110-1010-910-810-710-6100806040200[%]10-1110-1010-910-810-710-6Conc.[M]Conc.[M]Conc.[M]Conc.[M]Conc.[M]Conc.[M]Conc.[M]Conc.[M]SP-[Arg11]SPHGFEDCBAFig. 4. Dose–response curves for oct-TKRPR in Xenopus oocytes. (A–G) Dose–response curve ... only contraction of smooth muscles but alsoautonomic functions, feeding, internal secretion, visualsensation, and movement, via oct-TKRPR, as neuro-transmitters, neuromodulators, and hormone-like ... depolarizationor hyperpolarization of several neurons, and induc-tion of adipokinetic hormone release, have been docu-mented, supporting the view that TKRPs arefunctional counterparts of vertebrate...

Tài liệu Báo cáo khoa học: A novel dicyclodextrinyl diselenide compound with glutathione peroxidase activity ppt

... decreased with increasing 6-Cy-SeCD concentration. When the 6-CySeCD concentra-tion was 20 lm and mitochondria were damaged for50 min, the TBARS content was only 24% of that inthe damage group ... compilation ª 2007 FEBS on mitochondrial swelling and lipid peroxidaton in theabsence of damage.Exposing mitochondria in vitro to redox active xeno-biotics may simulate oxidative damage of mitochondriain ... accumulation on the con-centration of 6-CySeCD. (a) Control; (b) damage + 20 lM 6-CySeCD;(c) damage + 10 lM 6-CySeCD; (d) damage + 4 lM 6-CySeCD; (e)damage. (B) Effect of different GPX mimics on...

Tài liệu Báo cáo khoa học: A novel type of highly negatively charged lipooligosaccharide from Pseudomonas stutzeri OX1 possessing two 4,6-O-(1-carboxy)-ethylidene residues in the outer core region ppt

... as strong, medium and weak using cross-peaksfrom intraring proton-proton contacts for calibration.Heteronuclear single quantum coherence (HSQC) andheteronuclear multiple bond correlation (HMBC) ... Donato, A. (2002) Expression and puriﬁcation of therecombinant subunits of toluene/o-xylene monooxygenase andreconstitution of the active complex. Eur. J. Biochem. 69, 5689–5699.6. Bertoni, ... structurallymediated, biochemical response to a harsh and oddenvironment, such as that in which P. stutzeri OX1 wasselected.Our hypothesis is based on the consideration thatinsertion of two bulky pyruvate...

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