Tài liệu Báo cáo khoa học: "Performance Conﬁdence Estimation for Automatic Summarization" ppt

... 541–548,Athens, Greece, 30 March – 3 April 2009.c2009 Association for Computational LinguisticsPerformance Conﬁdence Estimation for Automatic SummarizationAnnie LouisUniversity of Pennsylvanialannie@seas.upenn.eduAni ... predicting the conﬁdence in systemperformance for a given input is in fact relevant notonly for summarization, but in general for all ap-plications aimed at facilitating information access.In ... examples for good and badperformance. We also extend the analysis to sin-gle document summarization, for which predict-ing system performance turns out to be much moreaccurate than for multi-document...

Tài liệu Báo cáo khoa học: "Direct Word Sense Matching for Lexical Substitution" ppt

... derived gold standardannotations for all the examples in the Senseval-3 training section for our 25 target words. For thetest set we took up to 40 test examples for each tar-get word (some words ... approachThe indirect approach for sense matching fol-lows the traditional scheme of performing WSD for lexical substitution. First, the WSD classiﬁerdescribed above was trained for the target wordsof ... meth-ods for the sense matching task.Direct. Conceptually, the most appealing solu-tion for the sense matching task is the one-classapproach proposed for the direct method (Section4.3.2). To perform...

Tài liệu Báo cáo khoa học: "A structure-sharing parser for lexicalized grammars" pptx

... precompiling additional information, parsing can be broken down into recognition followed by parse recovery; • providing a formal treatment of the algo- rithms for transforming and minimising ... annotations are unioned; • the parser maintains for each item in the table the set of trees that are valid for the item: initially this is all the valid trees for the automaton, but gets intersected ... where for 1 < k < n, Mk = (Qk, P,k, qk,~k, Fk). Construction of a single automaton for F is a two step process. First we build an automaton that accepts all elementary computations for...

Tài liệu Báo cáo khoa học: "An Efficient Generation Algorithm for Lexicalist MT" ppt

... it is well-formed or ill-formed. • maximal iff it is well-formed and its parent (if it has one) is ill-formed. In other words, a maximal TNCB is a largest well-formed component of a TNCB. ... permutation of signs is input to a shift-reduce parser which tests them for grammatical well-formedness. If they are well-formed, the system halts indicating success. If not, another permutation ... well-formed iff its value is a sign, • ill-formed iff its value is INCONSISTENT, • undetermined (and its value is UNDETER- MINED) iff it has not been demonstrated whether it is well-formed...

Tài liệu Báo cáo khoa học: A systems biology approach for the analysis of carbohydrate dynamics during acclimation to low temperature in Arabidopsis thaliana doc

... electrode. For starch extraction, pellets for ethanol extraction weresolubilized by heating them to 95 °Cin0.5m NaOH for 30 min. After acidiﬁcation with 1 m CH3COOH, thesuspension was digested for ... patternsearch method for bound constrained gloabal optimiza-tion. J Glob Optim 39 , 197–219.34 Schmidt H & Jirstrand M (2006) Systems Biology Tool-box for MATLAB: a computational platform for research ... would like to thank S. Stutz for fruitful discussionsand for helping with measurements of enzyme activi-ties at low temperature. We would also like to thankA. Allinger for expertise in plant cultivation,...

Tài liệu Báo cáo khoa học: Survival mechanisms of pathogenic Mycobacterium tuberculosis H37Rv ppt

... (2001) The Mycobacterium tubercu-losis pks2 gene encodes the synthase for the hepta- andoctamethyl-branched fatty acids required for sulfolipidsynthesis. J Biol Chem 276, 16833–16839.78 Lam TH, ... functions as a regulator for differen-tiation in Streptomyces coelicolor. Mol Microbiol 30,107–119.94 Vidwans SJ, Ireton K & Grossman AD (1995) Possiblerole for the essential GTP-binding ... be homologs of genes for M. tuberculosis PE ⁄ PE-PGRS, a family encodingnumerous repetitive glycine-rich proteins of unknownfunction(s). The mutation of these two genes for PE-PGRS produced...

Tài liệu Báo cáo khoa học: Applications of diagonal chromatography for proteomewide characterization of protein modiﬁcations and activity-based analyses doc

... high-throughput genome sequencingstarted to cover the entire genetic information ofseveral species. This information is now available for aKeywordsactivity-based probe; ATP-binding proteins;COFRADIC; ... ﬂuorophosphonates for monitoring serinehydrolases [73], and biotinylated a-bromobenzyl-phosphonates for detecting protein tyrosine phosphata-ses [74].ATP, ADP and AMP are important sensors for theenergy ... proteomics. Proteomics 4, 3686–3703.19 Liu H, Sadygov RG, Yates JR 3rd (2004) A model for random sampling and estimation of relative proteinabundance in shotgun proteomics. Anal Chem 76,4193–4201.20...

Tài liệu Báo cáo khoa học: Is ATP binding responsible for initiating drug translocation by the multidrug transporter ABCG2? docx

... ABCG2R482Gisoform was examinedin the nucleotide-bound and post-hydrolytic conformations. Binding of[3H]daunomycin was displaced by ATP analogues, indicating transition toa low-afﬁnity conformation ... post-hydrolysis. Therefore, the dissoci-ation of phosphate and ⁄ or ADP is likely to be responsible for resettingof the transporter. The data indicate that, like ABCB1 and ABCC1,the ‘power stroke’ for translocation ... ABCB1, the R482G isoformalso contains multiple sites of interaction for a singledrug (daunomycin), which can manifest as homotropicallostery [22]. The latter has been observed for thebacterial...

Tài liệu Báo cáo khoa học: Oxidation inhibits amyloid ﬁbril formation of transthyretin ppt

... Percentage of TTR fibril formation over time for V30M TTRand its oxidized forms from reaction with hydrogen peroxide for 10 min and 1 h. Absorbance measurements (A330) for each datasetnormalized ... inhibition of fibrilformation.A similar effect was observed for both the WT andV30M TTR when they were reacted with ROS onshorter timescales. The percentages of fibril formationover time for V30M TTR ... although theextent is somewhat smaller; for example, after 1 day,inhibition of fibril formation decreased from 90% for the 1 h oxidation treatment to 84% for the 10 min oxi-dation preparation.Oxidation...

Tài liệu Báo cáo khoa học: How does hepatitis C virus enter cells? pptx

... properties of exosomes for cell entry. This mechanism would be independentof HCV’s envelope proteins. A similar mechanism hasbeen proposed for HIV as a low-efﬁciency pathway for cell entry [93].The ... important role for E1and E2 in cell entry. It seems possible that different forms of HCV use dif-ferent receptors to attach to and enter cells. The putative receptors and theassays used for their ... or nonenveloped, and either boundto or free of lipoproteins. The different forms of HCV might use different receptors for cell attachment and entry. Enveloped virions mightinteract with CD81...

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