survey of natural language interface to databases

... 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 problems ... 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 ... system I know of. The panelists have been asked to discuss in their position papers as many of these problems as space allows, and have been invited to propose and discuss one issue of their...

Ngày tải lên: 21/02/2014, 20:20

... 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 one issue of his/her ... 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, ... broken down into offices with which are associated the total numbers of employees employed therein, to total the values of the NUMBER -OF- EMPLOYEES field in all the records for offices in the...

Ngày tải lên: 21/02/2014, 20:20

... between relations having of the order of a thousand tuples. A disadvantage of much current work on NL access to databases is that the work is restricted to providing access to databases, whereas ... the right way to avoid these drawbacks of current work in NL access to databases. Most work which attempts to deal precisely with the meaning of NL sentences uses some system of logic as an ... 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

... 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 ... 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 of finding ... restrictions to parsers in natural language interfaces (NLIs) to databases. The work is based on Linguis- tic Domain Theories (LDTs) (Rayner, 1993). In our approach, we propose a restricted version of...

Ngày tải lên: 08/03/2014, 07:20

... 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 ... semantics. All natural language access systems achieve some degree of success. But to make progress as a field, we need to be able to evaluate the degree of this success. For too long, the ... evaluations of systems conducted. 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...

Ngày tải lên: 08/03/2014, 18:20

... clearly has to be reasonably free of bugs in my case, 12 bugs were hit in the total of 1615 parsed and nonparsed messages. The adequate extent of natural language syntax is impossible to determine. ... Damerau's study Ill] of the use of the ll~A system by the city plannin S department in White Plains, at least with regard to the total of queries to those completed: 788 to 513. So, again, roughly ... EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATA BASE SYSTEMS Bozena Henisz Thompson California Institute of Technology INTEODUCT~ON Is evaluation, like beauty, in the eye of the beholder?...

Ngày tải lên: 17/03/2014, 19:20

Ngày tải lên: 31/03/2014, 17:20

Ngày tải lên: 08/03/2014, 18:20

... General Motors Research Laboratories Warren, MI 48090 Abstract This paper describes a general approach to the design of natural language interfaces that has evolved during the development of DATALOG, ... (RANKOP MOST) (CUTOFF i)) ))))) Figure 3. Interpretation of "the tallest female employee". 58 Interaction of Knowledge Sources in a Portable Natural Language Interface Carole ... Transportable Natural Language Interface System." In Proc. Conf. on Applied Natural Language Processing, Santa Monica CA, pp. 39-45 (1983). 8. Hafner, C. D. and Godden, K. S., "Design of Natural...

Ngày tải lên: 17/03/2014, 19:21

Ngày tải lên: 02/06/2014, 09:22

Ngày tải lên: 20/02/2014, 18:20

... variables 101 The Rhetorical Parsing of Natural Language Texts Daniel Marcu Department of Computer Science University of Toronto Toronto, Ontario Canada M5S 3G4 marcu~cs, toronto, edu Abstract ... Marcu, Daniel. 1997. The rhetorical parsing, sum- marization, and generation of natural language texts. Ph.D. thesis, Department of Computer Science, Uni- versity of Toronto, Forthcoming. Martin, ... semi- automatically with the purpose of deriving procedures that a shallow analyzer could use to identify discourse usages of cue phrases, break sentences into clauses, and hypothesize rhetorical...

Ngày tải lên: 22/02/2014, 03:20

... nodes are used to distinguish what is being shown to whom, to reflect the fact that the stopover phrase is part of a relative clause, and to determine the internal structure of the relative ... results, including the results of an ARPA 31 HIDDEN UNDERSTANDING MODELS OF NATURAL LANGUAGE Scott Miller College of Computer Science Northeastern University Boston, MA 02115 millers@ccs.neu.edu ... domain-specific representations, to ones at a level of detail and sophistication comparable to current natural language systems. In fact, a hidden understanding model can be used to produce a representation...

Ngày tải lên: 08/03/2014, 07:20

... them into the growing instance by VALSET. One or more members of VALSET are to be of GLAUCOMA-PATIENT. Ibis is due to the tree structure selected in creating an instance of the measurement of instances ... state of the art in speech understanding. A more reasonable goal is to try to capture the physicians" written " ;Natural Language& quot; for describing patients and to write programs to ... descriptions to the appropriate coded input to the consultation systems. The original motivation for this research came from the desire to have natural language input of cases to CASNET/GLAUCOMA...

Ngày tải lên: 08/03/2014, 18:20

... Flickinger (1987)) lexical rule approaches to verbal alterna- tions in particular and to development of (the lex- icon of) large-scale computational grammars of natural language based on HPSG in general. ... proper- ties of the arguments of the verb giefien (water) in example (1) of Section (2.1) above are captured by the following semantic type: (13) CONTENT value of giefien m i t - giefien-ch-ofst-rel ... co- indexed with an argument of the embedded state- of- affairs. Finally, as far as direct arguments are concerned, in Koenig and Davis (2000) these are predicted to link off the value of the KEY attribute. 3.1...

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Ngày tải lên: 31/03/2014, 03:20

Ngày tải lên: 31/03/2014, 04:20