Tài liệu Báo cáo khoa học: "Understanding the Semantic Structure of Noun Phrase Queries" pptx

... extract the semantic structure of noun phrase queries, i.e., IHs, IMs and the semantic labels of IMs. In particular, we investigate the use of transition, lexical, semantic and syntactic features. The ... identifying their semantic class, which is a primary focus of previous works, but also understanding their semantic structure. In this work, we formally defin...

Ngày tải lên: 20/02/2014, 04:20

... resonances without the concomitant appearance of other signals in other parts of the spectrum. This result could be a consequence of the paramagnetic properties of Fe(II), or it might arise from the presence of ... Fe 3+ Addition of Fe 2+ induced the displacement of several resonances in the [ 1 H, 15 N]-HSQC NMR spectrum of CyaY, but the most striking consequenc...

Ngày tải lên: 18/02/2014, 16:20

... identifying the pos- itive or negative semantic orientation of for- eign words. Identifying the semantic orienta- tion of words has numerous applications in the areas of text classification, analysis of ... where the attitude of participants in a discus- sion is inferred using the text they exchange. Due to its importance, several researchers have addressed the proble...

Ngày tải lên: 20/02/2014, 05:20

... [14]. The lack of characterization of the structural determinant of the substrate specificity of the AtdA enzyme has thus limited its development as a biocatalyst for the bioremediation of a wide ... reported which of the five genes control the substrate specificity of the AtdA enzyme. The objective of this study was to identify and probe the residues determin...

Ngày tải lên: 19/02/2014, 02:20

... similarities, select the best of them and com- bine them into one system. Specifically, in their im- plementation they use jcn for noun- noun and verb- verb pairs, and elesk for other pairs. (Sinha ... words. Therefore, missing words can be used to prune the hypotheses that are also highly related to the missing words. Consider the hypotheses of latent vectors in ta- ble 1 for ban...

Ngày tải lên: 19/02/2014, 19:20

... interaction in this case could be due to either loss of the epitope or an artifact of the blotting procedure. The location of peptide 10–11 along the primary structure of TC is shown in Fig. 4A as sequence ... [14] despite the absence of S-S bonds and the low number of conserved residues in this part of the sequence. Only later did the large N-terminal unit bec...

Ngày tải lên: 20/02/2014, 01:20

... of these questions, we will propose a new hypothesis that describes an integrated vision of the catalytic mechanism of MPO and LPO. A brief survey of the absorption features of MPO, LPO and their ... oxidize them [19]. On the other hand, this fact does not represent proof of the presence of one or two oxidizing equivalents on the decay product of Cpd I. The EPR spe...

Ngày tải lên: 20/02/2014, 02:21

... syndrome [6]. All of these disease are linked together because of the deposition of an abnormal, protease-resistant isoform of the prion protein in brains of individuals with these diseases. This ... PrP. Production of deletion mutants of PrP On the basis of the results with antibodies, a series of PrP mutants were made to assess whether deletions of certain domain...

Ngày tải lên: 21/02/2014, 00:20

... checks whether required components of the definition of the class are also present in the description of the instance. This also permits easy representation of modifications to the definition, ... irrelevant to the matching process. The transformation is performed by means of a process of ~ inmtRntlat~nn OF the deflnition the translation of the de/ini...

Ngày tải lên: 21/02/2014, 20:20

... the L measure. This tries to find the point of maximum curvature in the cri- terion function graph, by fitting a pair of lines to the curve (where the intersection of these lines rep- resents the ... single threshold. The graph of the P K1 scores shown in Figure 1 illustrates the dif- ficulty - the slope of these scores is nearly linear, and as such the threshold...

Ngày tải lên: 22/02/2014, 02:20