IBM Journal of Research and Development

Issue 1 • Jan. 1986

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Displaying Results 1 - 11 of 11
  • Knowledge systems: Principles and practice

    Publication Year: 1986, Page(s):2 - 13
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1077 KB)

    We describe what is expected of a knowledge-based expert system, and the components from which such a system is constructed. We give a view of how an interplay between principles and practice has helped the knowledge system field to develop, and we give simple examples to show that reasoning techniques based on formal logic are now starting to provide a useful coupling between scientific and engin... View full abstract»

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  • A continuous real-time expert system for computer operations

    Publication Year: 1986, Page(s):14 - 28
    Cited by:  Papers (11)  |  Patents (14)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1328 KB)

    The Yorktown Expert System/MVS Manager (or YES/MVS for short) is a continuous real-time expert system that exerts active control over a computing system and provides advice to computer operators. YES/MVS provides advice on routine operations and detects, diagnoses, and responds to problems in the computer operator's domain. This paper discusses the YES/MVS system, its domain of application, and is... View full abstract»

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  • Interfaces for knowledge-base builders' control knowledge and application-specific procedures

    Publication Year: 1986, Page(s):29 - 38
    Cited by:  Papers (3)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (981 KB)

    Expert System Environment/VM is an expert system shell—a general-purpose system for constructing and executing expert system applications. An application expert has both factual knowledge about an application and knowledge about how that factual knowledge should be organized and processed. In addition, many applications require application-dependent procedures to access databases or to do s... View full abstract»

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  • A theory for the representation of knowledge

    Publication Year: 1986, Page(s):39 - 56
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1616 KB)

    How to represent knowledge is one of the key questions in the construction of expert systems. Its solution depends on a number of factors, the most important of which are how knowledge is to be acquired and how it is to be used. Since we are interested in the use of natural language for communication with computers, we require from a formalism suggested for knowledge representation that it be suit... View full abstract»

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  • Implementing a semantic interpreter using conceptual graphs

    Publication Year: 1986, Page(s):57 - 69
    Cited by:  Papers (12)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1382 KB)

    A parser applies grammar rules to generate a parse tree that shows the syntactic structure of a sentence. This paper describes a semantic interpreter that starts with a parse tree and generates conceptual graphs that represent the meaning of the sentence. To generate conceptual graphs, the interpreter joins canonical graphs associated with each word of input. The result is a larger graph that repr... View full abstract»

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  • Conceptual graphs for semantics and knowledge processing

    Publication Year: 1986, Page(s):70 - 79
    Cited by:  Papers (8)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1087 KB)

    This paper discusses the representational and algorithmic power of the conceptual graph model for natural language semantics and knowledge processing. Also described is a Prolog-like resolution method for conceptual graphs, which allows one to perform deduction on very large semantic domains. The interpreter that we have developed is similar to a Prolog interpreter in which the terms are any conce... View full abstract»

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  • Storing and evaluating Horn-clause rules in a relational database

    Publication Year: 1986, Page(s):80 - 92
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1236 KB)

    This paper describes a practical approach to storing and evaluating Horn-clause rules in a relational database system. The intention is to give a complete outline of what needs to be added to an existing relational database system to allow it to support full logic programming functions. Implementation issues for each new function are discussed. We show how Horn-clause rules can be translated into ... View full abstract»

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  • Structures of rule-based belief functions

    Publication Year: 1986, Page(s):93 - 101
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (762 KB)

    Shafer's theory of evidential reasoning has recently received much attention as a possible model for probabilistic reasoning in expert system applications. This paper discusses the particular difficulties of implementing Shafer's belief functions in the context of the most common form of expert system, rule-based systems. The two most important problems are: the representation of the expert's subj... View full abstract»

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  • An experimental computer architecture supporting expert systems and logic programming

    Publication Year: 1986, Page(s):102 - 111
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (763 KB)

    This paper describes a set of function primitives which have been designed for support of expert systems and logic programs. The functions could be offered as part of the computer architecture by implementing them in microcode and partially in hardware. The functions are primarily (but not exclusively) oriented towards support of logic programming languages such as Prolog for implementing expert s... View full abstract»

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  • Recent papers by IBM authors

    Publication Year: 1986, Page(s):112 - 122
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (923 KB)

    The information listed here is supplied by the Institute for Scientific Information. Reprints of the papers may be obtained by writing directly to thejrst author cited. Papers are listed alphabetically by author. View full abstract»

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  • Recent IBM patents

    Publication Year: 1986, Page(s):123 - 124
    IEEE is not the copyright holder of this material | PDF file iconPDF (162 KB)
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IBM T. J. Watson Research Center