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Article

Mircea Gh. Negoita and David Pritchard

Education is increasingly using Intelligent Tutoring Systems (ITS), both for modelling instructional and teaching strategies and for enhancing educational programs. The…

Abstract

Education is increasingly using Intelligent Tutoring Systems (ITS), both for modelling instructional and teaching strategies and for enhancing educational programs. The first part of the paper introduces the basic structure of an ITS as well as common problems being experienced within the ITS community. The second part describes WITNeSS ‐ an original hybrid intelligent system using Fuzzy‐Neural‐GA techniques for optimising the presentation of learning material to a student. The original work in this paper is related to the concept of a “virtual student”. This student model, modelled using fuzzy technologies, will be useful for any ITS, providing it with an optimal learning strategy for fitting the ITS itself to the unique needs of each individual student. In the third part, experiments focus on problems developing a “virtual student” model, which simulates, in a rudimentary way, human learning behaviour. Part four finishes with concluding remarks.

Details

Interactive Technology and Smart Education, vol. 1 no. 3
Type: Research Article
ISSN: 1741-5659

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Article

Gh.M. Negoita and V.V. Canciu

A mathematical tool for the fuzzy identification of a system is presented. This hybrid mathematical method combines the fuzzy description of input space and the…

Abstract

A mathematical tool for the fuzzy identification of a system is presented. This hybrid mathematical method combines the fuzzy description of input space and the description of input‐output relations using the Bézier interpolation technique. This is a computationally simple method for designing a curve(surface). Its efficiency is expressed in its powerful application in controlling the shape of a described curve (surface), both simplifying the determination of the parameters of input‐output relations, qualititively by precision and quantitatively by decreasing the number of control points (values) required. Shows an application of the method to computer‐aided identification of the steady‐state operating points of a thermal engine.

Details

Kybernetes, vol. 21 no. 4
Type: Research Article
ISSN: 0368-492X

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Article

ANTONIO DI NOLA and ALDO G.S. VENTRE

Summary—A synthesis process of a multiple description is defined on a lattice of fuzzy sets which differs from the usual one. Connections between these lattices are…

Abstract

Summary—A synthesis process of a multiple description is defined on a lattice of fuzzy sets which differs from the usual one. Connections between these lattices are stated. Mathematical definitions are correlated with concepts of decision and system theory.

Details

Kybernetes, vol. 12 no. 3
Type: Research Article
ISSN: 0368-492X

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Article

Panos Fitsilis

The aim of this paper is to present the key areas of activity to be used for drafting service level agreements (SLAs) for electronic services and, at the same time, to…

Abstract

Purpose

The aim of this paper is to present the key areas of activity to be used for drafting service level agreements (SLAs) for electronic services and, at the same time, to present best practices and problems that arise from the application of this discipline.

Design/methodology/approach

A range of recently published (2000‐2005) works has been reviewed, in order to: a) analyse how an SLA has to be defined and applied b) identify the applicable best practices and c) identify the problem areas.

Findings

Provides guidance for the business and the Application Service Provider (ASP) when they want to engage in an outsourcing agreement by presenting best practices and problems that occur from the application of SLAs.

Research limitations/implications

Suggests further research is needed in a number of research areas such as: development of semantic models for SLAs, development of flexible pricing models in relation with SLAs, definition of SLAs in cases of dynamic service creation, etc.

Practical implications

A useful source of information both for academia and the business.

Originality/value

Provides practical insight on a specialized topic and guidance to researchers.

Details

Information Management & Computer Security, vol. 14 no. 2
Type: Research Article
ISSN: 0968-5227

Keywords

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