Báo cáo khoa học: "FLECTIONS ON TWENTY YEARS OF THE ACL" doc

... entered the field of computational linguistics in 1967 and one of my earliest recollections is of studying the Harvard Syntactic Analyzer. To this date, this parser is one of the best documented ... P~FLECTIONS ON TWENTY YEARS OF THE ACL Jonathan Allen Research Laboratory of Electronics and Department of Electrical Engineering and Computer Science Massachu...

Ngày tải lên: 17/03/2014, 19:21

... tenure of that office, in particular as they reflect on the state of computational linguistics then and now, and perhaps with some suggestions for what the future will bring." The written ... our name to the Association for Computational Linguistics in 1968, but that did not affect the continuity of the organization. The date of this panel, 17 June, misses...

Ngày tải lên: 08/03/2014, 18:20

... coordinate conjunction by containing a con- junction metarule mechanism which automat- ically adds a production containing conjunc- tion to certain context-free definitions. 3 The Syntactic ... in the BNF component of the grammar. Instead, the constraint com- ponent deals with this problem by means of special constraints that assign and pass up the comparativ e marker; ot...

Ngày tải lên: 31/03/2014, 18:20

... Vector Machines along with kernel functions can ef- fectively represent syntax and semantics. Our experiments on question/answer classification show that the above models highly improve on bag -of- words on a ... the data structures on which we applied the above kernels. 2.1 Syntactic Structures The POSSK is obtained by applying the String Ker- nel on the sequence of PO...

Ngày tải lên: 20/02/2014, 09:20

... dependent on the strength of the Fe-His bond and hence on the status of the proximal His H-bond. It appears that one can readily rationalize the general trends but not the magnitude of the chan- ges ... comparison of the electronic absorption and RR spectra of the wild type and Thr171Ser either in the presence of the aromatic donor BHA or at alkaline pH....

Ngày tải lên: 07/03/2014, 21:20

... confor- mation change, then allowing the purine base to bind in accordance with the mechanism of human HPRT [19,25]. This conclusion can be made based on the lack of thermal shifts when only the ... on ionic strength [20]. In the present study, we report the structural and functional characterization of the human HPRT homolog PRTFDC1. To shed light on the potential...

Ngày tải lên: 15/02/2014, 01:20

... at the 3¢ end of the gene, where the zebrafish and human sequences appear to be quite diverse. Together with the well-conserved gene organization, there is a conservation of synteny between the ... domains important in the functioning of these transcription factors. T-bet (also known as Tbox-21) belongs to the T-box family of genes, consisting of over 20 members charact...

Ngày tải lên: 16/02/2014, 09:20

... sug- gested that the 37 kDa form of OTUB1 may contain multiple phosphorylation sites, based on the observed differential migration pattern (Fig. 3E). To further shed light on the role of these OTUB1 ... 5B) or the S16A and Y26F control mutants (data not shown), thereby con- firming that modification of OTUB1 has an impact on the magnitude of Yersinia invasion. Because no...

Ngày tải lên: 16/02/2014, 15:20

... function of the linker histone variants Location and structure of the linker histones Historically, the location of the globular domain of the linker histone has been a matter of contention [13]. Currently, ... number of these modifications is low, the density of modifications is much the same as in the rest of the lin- ker histones. It is the shortness of...

Ngày tải lên: 18/02/2014, 08:20

... under sterol regulation. Under conditions of overnutrition, SREBP-1c expression is elevated, and consequently, the levels of nuclear SREBP-1c protein and lipogenesis are enhanced in the liver and adipose ... target of SREBP [20]. The role of SREBP-1a in the regulation of cell growth and the cell cycle might be biphasic and complex, and needs to be further investigated. SRE...

Ngày tải lên: 18/02/2014, 13:20