Tài liệu Báo cáo khoa học: "Seeing stars: Exploiting class relationships for sentiment categorization with respect to rating scales" doc

... 2005.c2005 Association for Computational LinguisticsSeeing stars: Exploiting class relationships for sentiment categorization with respect to rating scalesBo Pang and Lillian Lee(1) Department of Computer ... explic-itly incorporates information about item similaritiestogether with label similarity information (for in-stance, “one star” is closer to “two stars” than to “four stars”) is to think of the task ... indicators from each document’s text automati-cally. Now, while the obvious experiment would be to ask subjects to guess the rating that a review rep-resents, doing so would force us to specify...

Tài liệu Báo cáo khoa học: Infrared spectroscopy as a tool for discrimination between sensitive and multiresistant K562 cells doc

... linear discrimi-nant analysis was performed on sensitive and multiresistantcells spectra in order to establish a diagnostic tool for multiresistant pattern. For each of t he two methods of datareduction ... searches for thevariables containing the greatest interclass variance andthe smallest intraclass variance, and constructs a linearcombination of the variables to discriminate between theclasses. ... were sufﬁcient to obtaina partial separation between the two cell lines; Fig. 2 showsthe s pectra reduced with PCA proje cted on vector 2 andvector 4. Each one of these two vectors (Fig. 3)...

Tài liệu Báo cáo khoa học: "Web augmentation of language models for continuous speech recognition of SMS text messages" docx

... queryselection algorithm for the retrieval of webtext data to augment a statistical languagemodel (LM). The number of retrieved rel-evant documents is optimized with respect to the number of queries ... than the background data, and we wish to obtain more text with this crucial n-gram. Theopposite is true for the last n-gram.We need to transform the ranking into ρ(·) val-ues between zero and ... rates were 17.0 for En-glish, 18.7 for Spanish, and 22.5 for French. For English, we also created web mixture mod-els with KN smoothing. The error rates were 16.5,15.9 and 15.7 for the 20 MB,...

Tài liệu Báo cáo khoa học: An alternative isomerohydrolase in the retinal Muller cells of a cone-dominant species doc

... that conephotoreceptors recovered light sensitivity followingphotobleaching when the cone photoreceptors are con-nected with other retinal cells, but not with the RPE;rod photoreceptors did not ... °C for 5 min fol-lowed by 35 cycles of 94 °C for 1 min, 58 °C for 1 min and72 °C for 2 min. After agarose gel electrophoresis, the PCRproduct was puriﬁed and cloned into the pGEM-T Easyvector ... USA) with an oligo-dT primer and random hexamer. PCR was per-formed with PCR master mix (Roche, Indianapolis, IN,USA) at 94 °C for 5 min followed by 35 cycles of 94 °C for 30 s, 48 °C for 30...

Tài liệu Báo cáo khoa học: Angiopoietin-like proteins: emerging targets for treatment of obesity and related metabolic diseases pptx

... N-termi-nus for protein secretion, and secreted angiopoietinfunctions to maintain the vascular system and hemato-poietic stem cells through the Tie2 receptor [6]. How-ever, ANGPTLs do not bind to either ... angiopoietin-like protein; PGC-1a, peroxisome proliferator-activated receptor-c (PPARc)coactivator 1a; PPAR, peroxisome proliferator-activated receptor.FEBS Journal 278 (2011) 559–564 ª 2010 The Authors Journal ... beststrategy to overcome obesity and related metabolic dis-eases; however, it is difﬁcult for busy people to followrecommended regimes on a daily basis. An alternativestrategy might be to suppress...

Tài liệu Báo cáo khoa học: Crystal structure of Klebsiella sp. ASR1 phytase suggests substrate binding to a preformed active site that meets the requirements of a plant rhizosphere enzyme doc

... leaving enough freedom for the bulky phy-tate to rotate for further dephosphorylation steps or for alternative substrates to bind to the active site.Indeed, PhyK is able to dephosphorylate a ... Z-scorewas 47.0 for 402 superimposed Caatoms of AppA and41.9 for 391 superimposed Caatoms of G1P. Despitethe structural similarity, the sequence identity with PhyK is only 22.6 and 23.2%, respectively.The ... backbone; all other contacts are formedusing the side chains. The conserved Arg100 formshydrogen bonds with two of its side chain nitrogenatoms. Its Neatom and an Ngatom bind the scissile3-phosphate...

Tài liệu Báo cáo khoa học: Mixed lineage leukemia: histone H3 lysine 4 methyltransferases from yeast to human pptx

... mono- anddimethylated-K4 of histone H3 (Table 4). LSD1 hasbeen shown to interact with repressors like (co)repres-sor for element-1-silencing transcription factor andactivation complexes like ... Ryan OW, Golshani A, John-ston M et al. (2003) The Paf1 complex is required for histone H3 methylation by COMPASS and Dot1p:linking transcriptional elongation to histone methyla-tion. Mol Cell ... Schneider J, Dover J, Johnston M & Shilatif-ard A (2003) The Paf1 complex is essential for histonemonoubiquitination by the Rad6–Bre1 complex, whichsignals for histone methylation by COMPASS...

Tài liệu Báo cáo khoa học: Paradoxical interactions between modiﬁers and elastase-2 Patricia Schenker and Antonio Baici docx

... due to higher conforma-tional ﬂexibility that allows the molecule to form stronginteractions with several biomolecules [13]. PPS wasused in this study as a reference molecule with uniformsulfation ... In the absence ofinhibitors or activators, a liberator does not interfere with enzyme activity [11,17].We were unable to measure the binding of glycosa-minoglycans to elastase-2 by a method ... rate for enzyme–inhibitor complex formation, which can arise for a variety of reasons, is a serious drawback for con-trol of extracellularly acting peptidases [25]. Almostidentical behavior with...

Tài liệu Báo cáo khoa học: Neuronal growth-inhibitory factor (metallothionein-3): reactivity and structure of metal–thiolate clusters* doc

... growth-inhibitory factor (GIF) [1] because of thediscovery that it is a factor in brain extract with theability to inhibit neuronal outgrowth. Moreover, MT3or GIF was reported to be down-regulated ... cooperatively to MT3 at pH 7.3.Upon adding seven equivalents of Cd(II) or Zn(II) to MT3, distributions of metal loading were detected,ranging from ﬁve to nine for Cd(II) and from six to eight for Zn(II) ... ð6ÞThen, Cu(II) can oxidize thiolate to thiyl (Eqn 5)and two thiyls form a disulﬁde bridge (Eqn 6). [It isalso possible for S• to react with a neighboring thiolate to yield a disulﬁde radical anion...

Tài liệu Báo cáo khoa học: The multicopper oxidase from the archaeon Pyrobaculum aerophilum shows nitrous oxide reductase activity docx

... measurementswere performed with a silver ⁄ silver chloride electrode,calibrated with a quinhydrone-saturated solution at pH7.0. The redox potentials are quoted with respect to thestandard hydrogen ... titrated to the desired pH with 0.5 m NaOH), aspreviously described [11]. For measurements with metalions, the pH was chosen in accordance with the stabilityof the metal ions in solution; pH 3.5 for ... The gene was cloned into the expression vec-tor pET-15b to make pATF-20, and the ﬁnal constructwas transformed into E. coli Tuner (DE3). The recombi-nant McoP was puriﬁed to homogeneity by using...

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