Báo cáo khoa học: "RECOGNITION OF LINEAR CONTEXT-FREE REWRITING SYSTEMS*" ppt

... gsatta@linc.cis.upenn.edu ABSTRACT The class of linear context-free rewriting sys- tems has been introduced as a generalization of a class of grammar formalisms known as mildly context-sensitive. ... definition of LCFRS is to impose two major restrictions on rewriting. First of all, rewriting operations are applied in the derivation of a string in a way that is i...

Ngày tải lên: 31/03/2014, 06:20

... constituents of one clause bear certain kind of structural relationship to those of the other. Although there are an infinite number of situations, there seems to be only a small number of properties ... can cover wider range of in- stances of re-linkage. The result of the extension is shown in Table 2 (for cases each of which shares a subject) and Table 3 (for cases...

Ngày tải lên: 08/03/2014, 05:21

... examinations of the cytotoxic activity of trans-PtHMP revealed no cytotoxicity of this complex in two human ovarian cell lines A2780 and CH1 [5]. However, later studies of the cytotoxicity of trans-PtHMP ... therefore of great interest to examine whether DNA adducts of cytostatic analogues of inefficient transplatin also reduce the binding affin- ity of DNA to p53 protein simi...

Ngày tải lên: 16/03/2014, 14:20

... period of observation in the presence of both ATP and Ca 2+ were excluded from the following analyses. Visual characteristics of the Albers–Post scheme The number of peaks (i.e. the number of up–down conformational ... Histograms of the height differences between the top of SERCA and the surface of the membrane. Statistical section analy- ses of SERCA were performed with the...

Ngày tải lên: 14/02/2014, 14:20

... difficult to conceptualize. This demonstration provides an accessible illustration of the operation of a state -of- the-art POMDP-based dialog system. The system itself is a voice dialer, which ... models of how users are likely to respond to questions and how the speech recognition process is likely to corrupt user speech. The benefit of tracking this belief state is that it synthesiz...

Ngày tải lên: 20/02/2014, 09:20

... in terms of time, at the cost of rising memory demands, and it models time linearly, in contrast to ABL and Adios. 2.2 Evaluation Different methods of evaluation are used in GI. One of them is ... interchangeable part of two sentences. Instead of explicitly comparing each sentence with all other sentences, it incrementally builds up a table of type/expression pairs, and on the b...

Ngày tải lên: 20/02/2014, 12:20

... cc~putational treatment of the sublanguage. The emphasis of the research lies in defining the depth of linguistic analysis necessary to ade- quately treat the ccrmplexity of the text type with ... style of the sublanguage is distin- guished by cc~plex nominal dependencies with va- rious levels of coordination. In addition, most sentences are inoc~lete in that they consist...

Ngày tải lên: 17/03/2014, 19:21

... Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China 2 State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, ... of Applied Ecology, Chinese Academy of Sciences, China 4 Graduate School, Chinese Academy of Sciences, Beijing, China 5 Department of Molecular Microbiology and Immunology, Bl...

Ngày tải lên: 23/03/2014, 07:20

... of wj (hi,j), the number of occurrences of wi immedi- ately to the right ofwj (cij), the number of occur- rences of wl at a distance of one word to the left of wj (ai,j), and the number of ... enough for vo- cabularies of tens of thousands of words thus ad- dressing the problem of coverage. The problem of how syntactic categories can be induced is also of t...

Ngày tải lên: 23/03/2014, 20:20

... Ca 2+ fluorochrome. Representative traces of a single preparation out of three preparations are shown. A B Fig. 4. Effect of MC on CRC and Dw m of Ca 2+ -loaded mitochondria. RLM (0.5 mg of protein) were suspended ... polymerase-1 [14] and of matrix metalloproteinases [15]. The antia- poptotic effect of MC has been attributed to upregula- tion of the antiapoptotic protein Bcl-2...

Ngày tải lên: 30/03/2014, 02:20