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Web <strong>in</strong> order to supplement the ma<strong>in</strong> presentation chunks of the course with <strong>in</strong>teraction facilities. The lesson<br />

assignment is a set of tests that relate to the lesson topics and should be answered simultaneously. Each lesson<br />

conta<strong>in</strong>s from 5 to 7 different tests.<br />

The course learn<strong>in</strong>g materials consist of lecture notes divided <strong>in</strong>to chapters and lessons. Each lesson is a<br />

hypertext conta<strong>in</strong><strong>in</strong>g <strong>in</strong>teractive on-l<strong>in</strong>e forms such as tests and exercises. After brows<strong>in</strong>g the lesson materials<br />

a student has to perform the lesson assignment. In a typical <strong>in</strong>teractive session the computer will pose a<br />

problem and ask the student to fill <strong>in</strong> on-l<strong>in</strong>e form. After all forms have been completed the lesson assignment<br />

are submitted for evaluation. The student's answer is assessed by the server software and the student's scor<strong>in</strong>g<br />

along with analysis of student's mistakes are returned to the student. To improve his or her current scor<strong>in</strong>g a<br />

student is allowed to perform each assignment several times. This is also useful for a student's self assessment.<br />

Each test<strong>in</strong>g attempt has been evaluated by CGI program, which processes the student's <strong>in</strong>puts. The CGI<br />

program also generates new version of the test for the next test<strong>in</strong>g attempt.<br />

The students are registered formally for the course. This provides some access constra<strong>in</strong>ts on the course<br />

materials and allows the system to follow the student's performance. The student's <strong>in</strong>puts are recorded by the<br />

server-side software. This helps a tutor to control the student's study<strong>in</strong>g bas<strong>in</strong>g on past dialog history. Until a<br />

lesson assignment has not been completed with satisfactory scor<strong>in</strong>g, it is no reason to assume that a student has<br />

learned the lesson materials.<br />

4. Conclusions and future work<br />

Current research demonstrates the usefulness of adaptive <strong>in</strong>teraction technique for WWW-based learn<strong>in</strong>g.<br />

There are a lot of recently developed <strong>in</strong>novations such ATM multimedia, virtual reality, <strong>in</strong>teractive video that<br />

will enhance the learn<strong>in</strong>g power of the Web. The <strong>in</strong>telligent <strong>in</strong>teractive applications will only compliment the<br />

above <strong>in</strong>novations by perform<strong>in</strong>g a rout<strong>in</strong>e work on assessment of a student's knowledge and monitor<strong>in</strong>g her or<br />

his learn<strong>in</strong>g. In addition <strong>in</strong>telligent features of the Web is enhanced factor for student's motivation and<br />

persistence.<br />

In the proposed approach comprehensive tests are implemented to diagnose a student's knowledge and skills.<br />

The special database records <strong>in</strong><strong>format</strong>ion about the student's <strong>in</strong>teraction with the system. This <strong>in</strong><strong>format</strong>ion will<br />

allow an <strong>in</strong>telligent tutor (student model) to <strong>in</strong>fer current state of student knowledge and to provide adaptive<br />

<strong>in</strong>teraction with the student. The most <strong>in</strong>terest<strong>in</strong>g future work is to develop a consistent model for a Web<br />

student. From technical po<strong>in</strong>t of view the ability of server side software to perform nontrivial computation is<br />

essential. Therefore the idea of <strong>in</strong>corporat<strong>in</strong>g advanced learn<strong>in</strong>g software as a part of server side software is<br />

natural.<br />

References<br />

[Collis, 1995] Collis, B. (Ed.) (1995). On-l<strong>in</strong>e and distance learn<strong>in</strong>g. URL<br />

http://www.to.utwente.nl/`campus.html.<br />

[Schneider and Block,1995] Schneider, D., Block, K.,(1995) The World-Wide Web <strong>in</strong> Education. URL<br />

http://tecfa.unige.ch/ tecfa/tecfa-research/CMC/andrea95/andrea.html<br />

[L<strong>in</strong> et al., 1996] L<strong>in</strong>, F., Danielson, R., Herrgot, S. (1996). Adaptive Interaction through WWW. Proc of Ed-<br />

TELECOM'96 173-178.<br />

[Self, 1991] Self, J., (1991) Formal Approaches to Student Modell<strong>in</strong>g. Tech. Report AI-59. Lancaster Univ.,<br />

UK.<br />

[Swarz et al., 1996] Schwarz, E., Brusilovsky, P., Weber, G., World-Wide Intelligent Textbooks. (1996). Proc<br />

of Ed-TELECOM'96 302-307.<br />

[Wenger, 1987] Wenger, E., (1987) Artificial Intelligence and Tutor<strong>in</strong>g Systems. Los Altos: Morgan-<br />

Kaufman.

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