Báo cáo khoa học: "Learning Information Structure in The Prague Treebank" docx

... more, there are two possibilities: either providing more training data, or considering more features. To investigate the effect of the size of the training data we have computed the learning curves ... 2 in the second column. C4.5 and Bagging achieve the best performance improving on the results of the rule- based system by 6.99%. The top of the decision tree generated b...

Ngày tải lên: 23/03/2014, 19:20

... the underlying linguistic structure, i.e. the specific linguistic elements that contributed to the differences between the dialects. This is very of- ten seen as one of the main drawbacks of the ... presented in Nerbonne (2005) and Nerbonne (2006). In both of these papers the identification of linguistic structure in the aggregate analysis is based on the analysis of...

Ngày tải lên: 20/02/2014, 12:20

... transparent. We note in passing that although collapsing multilinear data-structures onto a single tier increases the likeliness of combinatorial explosion in process- ing when using the two-level ... existing grammar was extended with features describing the information struc- ture. The lexicon consists of entries in phonemic form (using SAMPA notation) enriched with i...

Ngày tải lên: 08/03/2014, 06:20

... constraints in the type and con- straints in the instance. In this case there are valid contexts of the type with invalid corresponding con- texts of the instance. Furthermore the inheritance ... part in the theatre.) In the 6'th block, in the line starting with 4 the parser combines type _16 (for the lexicon entry of im) with the type _17 (for T...

Ngày tải lên: 09/03/2014, 01:20

... lower than the probability of crosslinking of the wild-type protein (Fig. 4). The data available in the literature indicate that the b5–b7 loop can be involved in the interaction of the sHsp with ... A o and A t are the intensities of the band of intact protein at the beginning of tryp- sinolysis and at the fixed time of trypsinolysis) against the time of incubation...

Ngày tải lên: 23/03/2014, 07:20

... contribute to providing chromophore to melanopsin to maintain their light sensitivities. The expression and function of RPE65c in other cell types in the retina remains to be investigated. Earlier ... RPE65c in the inner retina, including Mu ¨ ller cells, but not in the RPE. Furthermore, double-immuno- staining of dissociated retinal cells using antibodies for RPE65c and gluta...

Ngày tải lên: 14/02/2014, 14:20

... 2007) doi:10.1111/j.1742-4658.2007.06051.x The mechanisms underlying increased cardioprotection in younger female mice are unclear. We hypothesized that serine-threonine protein kinase (protein kinase B; Akt) triggers ... effects via the prosurvival serine-threonine protein kinase, Akt (also known as protein kinase B) [2]. In agreement with this, elevated levels of activated Akt in...

Ngày tải lên: 18/02/2014, 16:20

... integrin-dependent cell volume sensing and signaling integrates into the overall context of insulin signaling. Similarly, sensing of glutamine-induced hepatocyte swelling by integrins feeds into ... hepatocyte swelling [12,13], insu- lin-induced hepatocyte swelling is registrated by the integrin system, leading to a Src-dependent activation of the p38-type MAPK and thereby inhibition of...

Ngày tải lên: 18/02/2014, 16:20

... of the c ring, respectively. The C-terminal helices show a clear handedness, and two of the rings face in the opposite direction in the membrane to the other two, forming the same pattern as in ... of the ion-binding site. Therefore, the c ring of A. woodii has only 10 membrane-buried negative charges that are essential for binding the ion and also for the rotation...

Ngày tải lên: 18/02/2014, 17:20

... Follistatin, Chordin and Noggin [12]. These proteins are antagonists of BMP and other members of the TGF-b family, binding to and inhibit- ing these signaling molecules from binding to their receptors ... their receptors in the extracellular space, thus inhibiting ven- tralizing activities. Of these proteins, Chordin has a long-range effect. In Xenopus, expression of the chordin gen...

Ngày tải lên: 19/02/2014, 00:20