Modeling problem-solving methods in new KARL
Jürgen Angele, Stefan Decker, Rainer Perkuhn, Rudi Studer · 1996
New KARL (Knowledge Acquisition and Representation Language) allows to specify all parts of a problem-solving method (PSM). It is a formal language with a welldefined semantics and thus allows to represent PSMs precisely and unambiguously yet abstracting from implementation detail. In this paper it is shown how the language KARL has been modified and extended to New KARL to better meet the needs for the representation of PSMs. Based on a conceptual structure of PSMs new language primitives are introduced for KARL to specify such a conceptual structure and to support the configuration of methods. An important goal for this extension was to preserve three important properties of KARL: to be (i) a conceptual, (ii) a formal, and (iii) an executable language. 1 INTRODUCTION The specification language KARL ([Fensel, 1995a], [Fensel, Angele, and Studer 1997]) is part of the MIKE-approach (Model-based and Incremental Knowledge Engineering) [Angele, Fensel, and Studer, 1996]. The ove...