caa a22 4500 467953252 CHVBK 20180323165703.0 cr unu---uuuuu 170328e19891201xx s 000 0 eng 10.1023/A:1022610907777 doi (NATIONALLICENCE)springer-10.1023/A:1022610907777 (NATIONALLICENCE)springer-10.1007/BF00130719 Musen Mark Medical Computer Science Group, Knowledge Systems Laboratory, Stanford University, 94305-5479., Stanford, California aut Automated Support for Building and Extending Expert Models [Elektronische Daten] [Mark Musen] Building a knowledge-based system is like developing a scientific theory. Although a knowledge base does not constitute a theory of some natural phenomenon, it does represent a theory of how a class of professionals approaches an application task. As when scientists develop a natural theory, builders of expert systems first must formulate a model of the behavior that they wish to understand and then must corroborate and extend that model with the aid of specific examples. Thus there are two interrelated phases of knowledge-base construction: (1) model building and (2) model extension. Computer-based tools can assist developers with both phases of the knowledge-acquisition process. Workers in the area of knowledge acquisition have developed computer-based tools that emphasize either the building of new models or the extension of existing models. The PROTÉGÉ knowledge-acquisition system addresses these two activities individually and facilitates the construction of expert systems when the same general model can be applied to a variety of application tasks. Kluwer Academic Publishers, 1989 knowledge acquisition nationallicence knowledge engineering nationallicence human-computer interaction nationallicence visual languages nationallicence domain modeling nationallicence Machine Learning Kluwer Academic Publishers-Plenum Publishers 4/3-4(1989-12-01), 347-375 0885-6125 4:3-4<347 1989 4 10994 https://doi.org/10.1023/A:1022610907777 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1022610907777 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Musen Mark Medical Computer Science Group, Knowledge Systems Laboratory, Stanford University, 94305-5479., Stanford, California aut NATIONALLICENCE 773 0- Machine Learning Kluwer Academic Publishers-Plenum Publishers 4/3-4(1989-12-01), 347-375 0885-6125 4:3-4<347 1989 4 10994 NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00130719 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Musen Mark Medical Computer Science Group, Knowledge Systems Laboratory, Stanford University, 94305-5479, Stanford, California, USA aut NATIONALLICENCE 773 0- Machine Learning Kluwer Academic Publishers 4/3-4(1989-12-01), 347-375 0885-6125 4:3-4<347 1989 4 10994 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer