There exist in the literature today many contributions dealing with the incorporation of fuzzy logic in expert systems. However, unfortunately, much of what has been proposed can only be applied to small-scale expert systems; that is, when the number of rules is in the dozens as opposed to in the hundreds. The more traditional (nonfuzzy) expert systems are able to cope with large numbers of rul...

Semantic not consistency, and knowledge base is difficult to reuse and sharing are the key problems affecting the system development and application. This paper studies how to express the soil fertility level information using of the ontology and generate OWL (Ontology Web Language) document, and how to make use of SWRL (Semantic Web Rule Language) to express inference rules. On this basis, thi...

This paper applies the MAS – CommonKADS methodology to the flights reservation problem. We develop each model included in this methodology, illustrating the complete development of both the coordination and expertise models. We incorporate UML activity diagrams in the task model and use sequence diagrams to model communication between agents (human and software) and to detail the participation ...

This paper discusses extending the Unified Modelling Language by means of a profile for modelling knowledge-based system in the context of Model Driven Architecture (MDA) framework. The profile is implemented using the eXecutable Modelling Framework (XMF) Mosaic tool. A case study from the health care domain demonstrates the practical use of this profile; with the prototype implemented in Java ...

In this paper we present an Expert System Shell [9] which has been already proved to be suitable for the medical domain [10, 5]. Particularly, we focus on the features of its underlaying actions-based formalism, which make it specially applicable to the Intensive Care domain. The critical nature of the processes that take place in an Intensive Care Unit makes indispensable that any system funct...

A probabilistic expert system provides a graphical representation of a joint probability distribution which enables local computations of probabilities. Dawid (1992) provided a ‘flow-propagation’ algorithm for finding the most probable configuration of the joint distribution in such a system. This paper analyses that algorithm in detail, and shows how it can be combined with a clever partitioni...

We describe DAMLJessKB, a tool for reasoning with the DARPA Agent Markup Language (DAML) and performing inference on the Semantic Web. DAMLJessKB maps DAML’s semantics into facts and rules for use in a production system, such as the Java Expert System Shell (Jess). This article presents our underlying methodology and provides a detailed example of how DAMLJessKB can be used to make decisions ab...