In many knowledge-based systems the used knowledge is distributed among several knowledge sources. Knowledge maintenance of such systems has several challenges to be met. This paper gives a short overview of a maintenance approach using so-called Case Factories to maintain knowledge sources and considering the dependencies between these sources. Furthermore we present a concept how our maintena...

AIMS is a knowledge-based system for learning and teaching support within the context of distance education. It is aimed not only at enhancing learner's conceptual knowledge in a specific subject area but also at providing knowledge verification tools for the teacher. The system can be used to aid learning and teaching in different subject areas and to provide user-oriented support in searching...

How to measure gain from the use of intelligent inference ? How can the complexity of the recognition/ classification task be estimated? What is the type of evidence which best suits an .inference mechanism? These questions are addressed here in their theoretical and methodological aspects. Their practical implications are demonstrated with 'real' crop mapping task. For this purpose, simple rul...

The progress in computer simulation tends to simulate complex systems governed by “internal models”, i.e. sophisticated activities of computing technique in real time flow. Independently of that, computer simulation needs the object-oriented programming and the agent-based paradigm for constructing “external models” of complex systems that are being designed. Thus the progress tends to use mode...

In this paper we present a feasibility study we conducted in a German county in order to assess the potential of a legal knowledge system in the domain of family law. The goals of this project were to describe the actual work processes, to propose optimized processes if needed and to develop a prototype. Our study was based on interviews, on two test cases submitted to clerks and on an online q...

In this paper we introduce an Intelligent Web-Based Learning System Virtus which supports role-based collaboration using a group contract model (a charter) based on roles and rules. The originality of our work consists, on the one hand, in proposing a declarative language to express contracts using declarative rules, commitments and role responsibilities and, on the other hand, in automatically...

Case-based Reasoning (CBR) is a mature technology for building knowledge-based systems that are capable to produce useful results even if no answer matches the query exactly. Often the result sets presented to users are ordered by means of similarity and utility. However, for complex applications with knowledge intensive domains we have discovered that results sets enriched by calculated simila...