Tài liệu Báo cáo khoa học: "PARAHETRIZED FOR LINGUISTIC ABSTRACT FORMATION OBJECTS PROCESSING" doc

... parametrized abstract objects as tools for linguistic information processing and exemplifies the use of such objects for temporal information. INTRODUCTION In computational linguistics, ... primitives for linguistic information processin~ and a clear semantics at the formal computational level are now slowly emergin~ as a convergent effort from computer science, lin...

Ngày tải lên: 22/02/2014, 09:20

... most likely tag for each word is assigned, contextual transformations are used to improve the accuracy. We have evaluated the tagger performance on the TEST Data both before and after training ... originates from verbs, which provide information on subcategorization, and prepositions, which are critical for PP-attachment ambiguity res- olution. For the given domain, lexicalizing d...

Ngày tải lên: 22/02/2014, 03:20

... Princeton University Language Abstract Computational linguistics is generally considered to be the branch of engineering that uses computers to do useful things with linguistic signals, but it ... Language provides a critical test for the hypothesis that physical symbol systems are adequate to perform all human cognitive functions. As yet, no adequate system for natural langua...

Ngày tải lên: 20/02/2014, 18:20

... information theory, which formalizes the dependencies between the information and the probability distribution of the given code (alphabet or language). As stated by Shannon (1948), information ... its particular signs, to transmit information. It should be emphasized that, according to the information theory, there is no direct relation between information and meaning, entropy giving...

Ngày tải lên: 20/02/2014, 21:20

... Mayrose I, Bacharach E & Pupko T (2005) Selecton: a server for detecting evolutionary forces at a single amino-acid site. Bioin- formatics 21, 2101–2103. 39 Da Lage JL, Danchin EG & Casane ... fifth CSR (QPDLN for both human rBAT and Bacil- lus cereus oligo-1,6-glucosidase) [20] (Fig. 2), may indi- cate a shorter evolutionary distance for rBATs from the GH13 ancestor common for...

Ngày tải lên: 18/02/2014, 13:20

... RT-PCR analysis was performed as described previously. The expected sizes of the PCR products were 1270 bp for HVEM, 738 bp for nectin-1, 616 bp for nectin-2, and 736 bp for 3-OST-3, respectively. ... phalloidin (Invitrogen) was added for F-actin staining at room temperature for 45 min. Finally, the cells were washed three times with 1· NaCl ⁄ P i before micros- copy was performed...

Ngày tải lên: 18/02/2014, 14:20

... these papers clearly show domain-specific binding for M 2+ (M ¼ Zn, Cd) initially to the a domain, thereby lead- ing to formation of the M 4 a cluster prior to formation of the M 3 b cluster, demonstrating ... under limiting Cd 2+ con- ditions. Titration with four molar equivalents of Cd 2+ was required for the formation of the Cd 4 a species in 100% abundance. The implications of a...

Ngày tải lên: 19/02/2014, 00:20

... viral life cycle is essential in order to highlight potential targets for antiviral therapy and to obtain key information for the rational design of anti- viral drugs. Virus structure and replicative ... vitro systems as supportive medical care and for sympto- matic treatment; they represent an important aid for patients and for improving survival in severe forms of disease. Antivir...

Ngày tải lên: 19/02/2014, 00:20

... converting glycerol to glyceraldehyde. The formation of glyceraldehyde is energetically less favourable than the formation of DHA, and is not observed for this reason. Another possible explanation ... frames using PCR. For the first potential glycerol dehydrogenase gene, we predicted introns in the genomic DNA. For that rea- son, we amplified the open reading frame from cDNA. For th...

Ngày tải lên: 19/02/2014, 06:20

... indicated above the lanes) were assessed using export assays for TorA (upper panel) or TorA-GFP (lower panel) as described earlier for other mutants (Fig. 2). Mutagenesis of TatABC C. M. L. Barrett ... essential for Tat function. Taking these previ- ous reports into consideration, the logical conclusion is that several residues (F20, G21 in TatA, G21, P22, P26 in TatB) are probably impo...

Ngày tải lên: 19/02/2014, 17:20