Intelligent Tutoring System

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Intelligent Tutoring Systems is a type of e-learning where students can learn whenever and wherever is suitable for them. ITS is broadly defined as a computer system that aims to provide immediate and customized instruction or feedback to learners, usually without human intervention [16]. The problem with evaluating the e-learning systems lies in the absence of worldwide agreement on how it should be performed [9]. The purpose of this paper is to present and judge the different models and metrics that are used in evaluating ITS. Such models as Kirckpatrick, ISO 9126 Quality, Boehm’s are considered the most common used in this respect. Mean Absolute Error and Root Mean Square Error are used.
Keywords: Boehm’s Model, Evaluation Models, …show more content…

Although CBT and CAI may be effective in learning, they do not provide that individualized attention that a student would receive from a human tutor. The reason is the absence of the domain and the student modules. This has led to research in the field of using Intelligent tutoring systems (ITSs).
By the late 1960's and early 1970's, many researchers developed systems that altered the presentation of new materials based on the history of a student's responses.

ITS consists of five main modules which are: Student Module, Domain Module, Expert Module, Tutor Module, and User Interface.
Due to the importance of e-learning systems in education, there is an emphasize on the evaluation of these programs to ensure the quality of these systems. Evaluation can be formative or summative. The first is used during the design of the ITS, while the second is used to determine whether the finished ITS is effective and with high quality product.
The problem of evaluating the ITSs is a lack of accepted guidelines and various factors to be considered during the evaluation …show more content…

2-The tutor module imparts the planned knowledge during the class according to the selected pedagogical style. This will go through a process which will shape it into a natural language to ease the interaction with the user and it will be presented through an interface, which will arrange the pedagogical elements used for the particular lesson.
During the pedagogic session, the tutor module will have general objectives to carry out (to give the solution to a problem, to assure that the student reaches a certain degree of knowledge about the theme, etc), but through the interaction with the user many secondary objectives rise, necessary and not, to achieve the main purpose of the pedagogic session. It would be responsibility of the tutor module to guide the user towards every objective, and to continue the pedagogic session until the goals have been satisfied [15].
4)Expert Module: It contains a complete collection of units of the target. Knowledge represented as facts, procedures, concepts, and/or mental models. Generally it requires significant knowledge engineering to encode a domain in a suitable form

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