This study attempted to reuse the web learning portfolios to scaffold problem solving for activating students ’ Zone of Proximal Development. First, we analyzed cases from students ’ learning portfolios for getting case knowledge and student ability, and then used Case Based Reasoning technology for recommending cases to students. After students referred these cases, we adopted Data Mining tech...

This paper presents an integrated knowledge-based system, which combines fuzzy rule-based reasoning with case-based reasoning, for turbomachinery diagnosis. By incorporating a casebased reasoning sub-system in a fuzzy rule-based system, the integrated system allows past experience to be applied in a more direct way. This helps improve the diagnostic accuracy of the rulebased system. This approa...

The tasks a system administrator must fulfill become more and more complex as information systems increase in complexity and connectivity. More specifically, the problem of the expression and update of security requirements is central. Formal models designed to express security policies have proved to be necessary since they provide non ambiguous semantics to analyze them. However, such models ...

Agent-based systems that are composed of simple locally interacting agents but which demonstrate complex group behavior o er several advantages over traditional multi-agent systems. A well-designed complex agent-based systems is an e cient, robust, adaptive and stable system. It has very low communication and computational requirements, meaning that there are virtually no constraints on the sys...

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...

In emerging computing paradigms, such as mobile information systems, there is a strong relation between the system requirements and location. The system may operate in various locations and location can be a main factor in deciding the requirements to meet and the way to meet them. In this paper, we propose a goal-oriented requirements engineering approach to model and analyze location-based re...

Driven by the urging need to thoroughly identify and accentuate the merits of agent technology, we present in this paper MEANDER, an integrated framework for evaluating the performance of agent-based systems. The proposed framework is based on the Agent Performance Evaluation (APE) methodology, which provides guidelines and representation tools for performance metrics, measurement collection an...

ion. Once these tables have been set up, the expert is able to produce row after row on his own until a complete rule base is built. A rule generator currently produces rules in Clips or

This research is focused on a semantic recommendations model that affects the life cycle of eLearning and can be used to build a knowledge-based recommender system to provide adaptive capabilities to existing learning management systems with the aim to support users in an inclusive and personalized way.