natural language interfaces to databases

... application to Natural Language Database Interfacing. Ph.D. Thesis, Royal Institute of Technology, Stockholm, Sweden. 316 Semantic Information Preprocessing for Natural Language Interfaces to Databases ... lectional restrictions to parsers in natural language interfaces (NLIs) to databases by extracting the selectional restrictions from semantic descriptions of those NLIs. Au- tomating the process ... Introduction An approach is described for supplying selectional restrictions to parsers in natural language interfaces (NLIs) to databases. The work is based on Linguis- tic Domain Theories (LDTs)...

Ngày tải lên: 08/03/2014, 07:20

Ngày tải lên: 31/03/2014, 17:20

... experimental systems for natural- language access to databases, with some now going into actual use, many problems in this area remain to be solved. The purpose of this panel is to put some of those ... that, too often in the past, discussion of natural- language access to databases has focused, at the expense of the underlying issues, on what particular systems can or cannot do. To avoid ... NATURAL- LANGUAGE ACCESS TO DATABASES THEORETICAL/TECHNICAL ISSUES Robert C. Moore Artificial Intelligence...

Ngày tải lên: 21/02/2014, 20:20

... other problems in natural language access to databases. In addition to considering some subset of the chairman's five problems, each of the panelists was invited to propose and choose ... which TQA assigns to the sen- tence "What is the zone of the vacant parcels in subplan- ning area 410?" 53 THEORETICAL/TECHNICAL ISSUES IN NATURAL LANGUAGE ACCESS TO DATABASES S. ... establishing the completeness of query languages offer little or no guidance as to the construction of a practical translator from relational calculus to a formal query language such as SQL. Hence,...

Ngày tải lên: 21/02/2014, 20:20

... access to databases is that the work is restricted to providing access to databases, whereas users would appreciate NL interfaces to computer systems in general. Moreover, the attempt to provide ... "front-end" to databases is surely putting the cart before the horse. What one should really do is to investigate what "back-end" is needed to support NL interfaces to computers, ... reallsed in the language Prolog, has a great deal in common with the relational approach to databases, which can be seen as the result of a "bottom-up" effort to make database languages...

Ngày tải lên: 21/02/2014, 20:20

... EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATABASE SYSTEMS: A PANEL DISCUSSION Norman K. Sondheimer, Chair Sperry Univac Blue Bell, PA For a natural language access to database system to be ... like for natural language access to database? Under this point, what niches look most promising for natural language interfaces? What standards should he set for natural language systems performance? ... Recently, this has begun to change. In the last several years, many of the current generation of natural language access to database systems have been subject to laboratory or field testing....

Ngày tải lên: 08/03/2014, 18:20

Ngày tải lên: 17/03/2014, 19:20

... instruction to start using INGLISH. Ini- tially there is a preference to tt~ the mouse to explore the cov- erage and then to begin to incorporate some typing. We have not had any long-term use~ to ... into some natural language interface and be done with it. This paper discusses the natural language technology used in building INKA. The system incorporates a diverse collec- tion of natural ... In short, the our approach to building practical natural language inte~ ees does not depend on a semantic grammar to ¢oastra/n input. In the future we intend to explore the u~ of a wider...

Ngày tải lên: 21/02/2014, 20:20

Ngày tải lên: 23/03/2014, 20:21

... of hlgher-ozdez degree operator, then that operator has to apply to both predicates and quantiflers. Another possibility would be to apply the degree operator to an entire fozmula, as in ... extension of the language- processlng and data access components that make it possible for an end user to query the new database in natural language. A major benefit of using natural language is ... take such factors as time scale into account. The problem is more difficult to deal with for a transportable natural- language interface, but two strategies appear possible. One is to provide...

Ngày tải lên: 21/02/2014, 20:20

... is to try to capture the physicians" written " ;Natural Language& quot; for describing patients and to write programs to convert these descriptions to the appropriate coded input to ... N. Natural Language Information FormatttnB: The Automatic Conversion of Texts into a Structured Data-Base, In Advances in Computers, Yovits M. [Ed.], Vol. 17, 1978. 9. SanBster B. Natural Language ... given to the eye but is taken orally. In addition to this, ic £s generally not possible to know at the clme of encountering a word whether it refers to an existing Instance or to a new...

Ngày tải lên: 08/03/2014, 18:20

... "Developing a Natural Language Interface to Complex Data," SRI International, 1976. 11. Hendrix, G. G., "The LIFER Manual: A guide to Building Practical Natural Language Interfaces, " ... The initial objective of this study was to circumscribe the natural language interface task by attempting to instruct users of a simulated interface not to employ different discourse devices ... appropriate commands to the (real) operating system. In different sessions, users were instructed not to use pronouns, to type only complete sentences, to avoid complex syntax, to type only direct...

Ngày tải lên: 08/03/2014, 18:20

Ngày tải lên: 08/03/2014, 18:20

... by typing utterances to request help to perform a primary task. This constrains the usability of natural language interfaces as interfaces to advisory systems. One needs to identify the conditions ... typing in utterances to determine when natural language in- terfaces are effective interfaces to advisory systems. On the other hand, the natural restrictions on the language produced by ... not seem to be easily under the conversant's control and edited or planned to be avoided during the dialogue; 2) They correspond to a telegraphic language assumed to be under- stood by...

Ngày tải lên: 08/03/2014, 18:20

Ngày tải lên: 18/03/2014, 02:20

Ngày tải lên: 24/03/2014, 01:21

Ngày tải lên: 31/03/2014, 04:20

Ngày tải lên: 18/03/2014, 02:20

... NATURAL LANGUAGE AND DATABASES, AGAIN Karen Sparck Jones Computer Laboratory, University of Cambridge Corn Exchange Street, Cambridge CB2 3QG, England INTRODUCTION Natural Language and Databases ... richness of natural language expressions to obtain sensible database mappings.) The second reason for doubting the continuing utility of database query as a field for natural language research, ... history as a vehicle for natural language research. Its value for this purpose was restated, for example, by Bonnie Webber at IJCAI-83 (Webber 1983). I nevertheless think it is now time to...

Ngày tải lên: 21/02/2014, 20:20

... a natural language inter- face to include the programming environment is that if the interface were being developed in such an environment, one could use natural language to develop the natural ... cases where a request was too vague, and the system (like an expert system) could present a series of choice points to the user in order to reduce the original request to a manageable one. Presenting ... rarely-changed aspect of the environment. Such a natural language interface might also cope with "how to& quot; questions, at least serving as another link to on-line documentation. The linguistically...

Ngày tải lên: 21/02/2014, 20:20