Báo cáo khoa học: "Corpus-Based Identification of Non-Anaphoric N o u n Phrases" potx

... main opinion (recommendation or not) about a given product, but also includes various reasons for recommendation or non- recommendation, which are valuable to identify. Therefore, we focus on ... problem of opinion analysis, identify- ing reasons for opinions, especially for opinions in online product reviews. The opinion reason identification problem in online reviews seeks to answe...

Ngày tải lên: 20/02/2014, 12:20

... translation of our source-language word. 3 Simulation 3.1 Language Resources To conduct the simulation, a number of resour- ces were required. These are 1. a German corpus 2. an English corpus ... in terms of corpus frequencies: kl~ = frequency of common occurrence of word A and word B kl2 = corpus frequency of word A - kll k21 = corpus frequency of word B - kll k22...

Ngày tải lên: 08/03/2014, 06:20

... phrases "eco- nomic fallout" and "economic repercussion" are in- tuitively more similar to "economic impact" than "economic implication" or "economic ... "line of product" sense of "line". We present a method for automatic identification of non-compositional expressions using their statis- tical properties in a text...

Ngày tải lên: 31/03/2014, 04:20

... [23,24]. The use of a nonsaturating concentration of DCMU, an inhibitor known to close the PSII reaction center by binding in the Q B pocket and blocking electron transfer from Q A to Q B [21,22], is of ... fluorescence; F v , variable fluorescence; FI, fluorescence induction; NPQ, nonphotochemical quenching; PQ, plastoquinone; PS, photosystem; Q A and Q B , primary and secondary quinone a...

Ngày tải lên: 19/02/2014, 05:20

... regions of proteins. Furthermore, biochemical analysis of mutant pro- teins can help in understanding the causes and symptoms of Correspondence to R. J. Reece, School of Biological Sciences, University ... Protein concentrations were measured by the method of Bradford [25]. The protein solution was frozen in small aliquots in liquid nitrogen and stored at )80 °C. Generation of poi...

Ngày tải lên: 08/03/2014, 02:20

... structures have been originally introduced by (Pustejovsky, 1991) and are used for a variety of purposes in natural language processing (NLP), such as for the analysis of compounds (Johnston and Busa, ... Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics, pages 888–895, Prague, Czech Republic, June 2007. c 2007 Association for Computational Ling...

Ngày tải lên: 08/03/2014, 02:21

... Triton X-100, and homogenized using a loose-fitting Dounce homogenizer (10 strokes). The homogenates were then adjusted to 40% sucrose by the addition of an equal volume of an 80% sucrose solution ... fractions sequentially from the top of the gradient, and concentrated by precipitation with trichloroacetic acid or by ultracentrifugation following dilution. Assay for phosphorylation of...

Ngày tải lên: 17/03/2014, 03:20

... to study document, sentence, and term, spaces in our corpora of more than one-hundred thousand full-text docu- ments; Section 4 discusses the results; and Sec- tion 5 draws conclusions from ... the number of documents (shown on the y-axis in Figure 1) remains un- bounded. It is not clear which of the two compo- nents in equation (1), the log 2 (N) , which re- flects the number of...

Ngày tải lên: 17/03/2014, 04:20

... characteristic of an acetamidino group, thus identifying A as an a-FucpNAm residue, the a-configuration being assigned from consid- eration of the anomeric proton and carbon coupling constant data (J Hl,2  ... only be followed from H1B to H2B and H3B, and from the methyl resonance of H6B to H5B with no evidence of connectivities to any proton signals at C4B. The presence of a C4 ket...

Ngày tải lên: 17/03/2014, 10:20

... TatC, can carry out most of the required functions, such as binding of Tat substrates, recognition of the folded state, formation of a translocation pore, usage of the DpH for translocation, or prevention ... because of conformational changes induced by the loss of its cofactor. The overall findings suggest that a pathway exists for the membrane insertion of folded and cofactor...

Ngày tải lên: 23/03/2014, 21:20