Abstract
Assessment is an important area in both teaching and learning. E-assessment is the foremost methodology for assessment in distance learning. This paper presents a method based on client-server architecture that can be used in capturing/preventing plagiarism in online assessments for distance learning centres. Among many possible plagiarism in online assessments for distance learning centres. Among many possible unauthorised help obtained from online chat forms, websites or other types of communication mediums as well as use of stored text/restricted software. Bench tests show high degree of accuracy in capturing plagiarism scenarios by monitoring the change of grey values observed in edge detected screen shots. During pilot tests, participants attempted activities of plagiarism although the software was designed to prevent the act of plagiarism. The results show 97% accuracy in capturing plagiarism scenarios by the developed software in a restricted Ubuntu Linux environment. Key words: e-assessment; plagiarism; distance learning DOI: 10.4038/josuk.v4i0.2700J Sci.Univ.Kelaniya 4 (2008): 95-104
Highlights
Among the vast advantages offered with the emerging of internet in the last decade, distance learning or e-learning plays a major share in training and education
BENCH TESTS In order to detect the plagiarism during an online assessment, possible scenarios were divided into five categories, namely, (1) use of stored text, (2) use of restricted software, (3) web browsing, (4) chat or communication and (5) use of online web forums
The final system for pilot tests was constructed with one client machine and the server
Summary
Among the vast advantages offered with the emerging of internet in the last decade, distance learning or e-learning plays a major share in training and education. In the second scenario candidate can access restricted software or stored text. The scope of this pilot project was to develop software solution to prevent first two scenarios of plagiarism in a distance e-assessment environment. The software solution presented in this work, a restricted Linux operating system and the client software to be used is provided to the remote centre, so that each candidate could access the examination paper from a central server.
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