Tài liệu Báo cáo khoa học: "THEORETICAL/TECHNICAL ISSUES IN NATURAL LANGUAGE ACCESS TO DATABASES" pdf

... utilized in the TQA Ques- tion Answering System provides a principled basis for handling these and many other problems in natural language access to databases. In addition to considering some ... either taking the initiative in automat- ically printing these implicitly requested values or for engaging in a dialog with the user to determine whether they should be pri...

Ngày tải lên: 21/02/2014, 20:20

... encoding ё and Ё is complicated by the source of the Russian language text. If e and ё are coded separately, it would appear that words containing ё would have to be stored in the memory in ... rules concerning case endings and conjugation must be observed). Indeed, such an examination is essential for certain words in Russian and, more especially, in English. 5 Certain R...

Ngày tải lên: 19/02/2014, 19:20

... proposed in these experiments have gener- ally been too laborious, too subject to arbitrariness in standards, or too lacking in validity and/or reliability to constitute a satisfactory basis ... fact into account in mak- ing their judgments. In effect, then, fidelity of a translation was to be judged in terms of the “informativeness” of the original relative to the tr...

Ngày tải lên: 19/02/2014, 19:20

... from a custom fitting of the NL component to the exact requirements of the domain; and from the painstaking crafting of the lexicon and grammar to achieve tha necessary density of linguistic ... whether the overall NL interaction, taken in toto, offers enough benefits over alternative formal interactions to be deemed practical. If we accept my point that practicality is in...

Ngày tải lên: 21/02/2014, 20:20

... ISSUES IN NATURAL LANGUAGE ACCESS TO DATABASES FROM A LOGIC PROGRAMMING PERSPECTIVE David H D Warren Artificial Intelligence Center SRI International, Menlo Park, CA 94025, USA I INTRODUCTION ... shall discuss issues in natural language (NL) access to databases in the light of an experimental NL questlon-answering system, Chat, which I wrote with Fernando Per...

Ngày tải lên: 21/02/2014, 20:20

... corre- spond to the flexible importin-b binding domain. The importin-b binding domain is known to have an autoinhibitory function, whereby an internal NLS-like sequence competes for the importin-a binding ... the binding pocket. In total, the CLIC4 NLS main chain and side chains make 174 atom -to- atom van der Waals’ contacts with importin-a and 13 hydrogen bonds, including one salt brid...

Ngày tải lên: 14/02/2014, 19:20

... Japan Introduction The epidermal growth factor receptor (EGFR) is com- posed of an extracellular ligand-binding domain, a transmembrane domain and an intracellular tyrosine kinase domain. The binding ... downstream signaling molecules and serve as the determinants that control apoptosis. We also discuss tyrosine kinase inhibitor-induced apoptosis via c-Jun NH 2 -terminal kinase and p38 mitoge...

Ngày tải lên: 16/02/2014, 09:20

... thdng tuc, tham chf thd thien. Ching ban, vd xung hd, cd the dting: may, tao, cau, td, minh, chiing minh, bpn minh, y, bin, bin ta, bpn nd, tui nd, thing, thing cha, con me, mu, con mu, mu ... Trong qua trinh phit trien ciia ngdn ngir va xa hdi, cic phong cich chirc nang, cic ling xu ngdn ngir trong nhirng hoan cinh giao tiep kbic nhau dupc hinh thanh va nhan dien din din. Giao tie...

Ngày tải lên: 18/02/2014, 03:20

... (2008) Mapping alpha-helical induced folding within the intrinsically dis- ordered C-terminal domain of the measles virus nucleo- protein by site-directed spin-labeling EPR spectroscopy. Proteins 73, ... inter- action depending on orientation factors, with the two moieties exhibiting a considerably reduced conforma- tional freedom if covalently linked. In view of obtaining further insight i...

Ngày tải lên: 18/02/2014, 04:20

... as being involved in electron transfer, there are a few polar side chains (Glu, Gln) in close vicinity to the ThDP cofactor, which are likely to play important roles for catalysis and binding ... A ˚ edge -to- edge distance). Cluster C is located close to the enzyme surface, where the final electron acceptor ferredoxin is suspected to bind. Electron tunneling is likely to proceed...

Ngày tải lên: 18/02/2014, 08:20