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Journal Issue
Volume 9 Issue 1, ECEL 2010 special issue / Apr 2011  pp1‑114

Editor: Carlos Vaz de Carvalho

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An Automated Individual Feedback and Marking System: An Empirical Study  pp1‑14

Trevor Barker

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Semi‑Automatic Grading of Students’ Answers Written in Free Text  pp15‑22

Nuno Escudeiro, Paula Escudeiro, Augusto Cruz

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Abstract

The correct grading of free text answers to exam questions during an assessment process is time consuming and subject to fluctuations in the application of evaluation criteria, particularly when the number of answers is high (in the hundreds). In consequence of these fluctuations, inherent to human nature, and largely determined by emotional factors difficult to mitigate, it is natural that small discrepancies arise in the ratings assigned to similar responses. This means that two answers with similar quality may get a different grade which may generate inequities in the assessment process. Reducing the time required by the assessment process on one hand, and grouping the answers in homogenous groups, on the other hand, are the main motivations for developing the work presented here. We believe that it is possible to reduce unintentional inequities during an assessment process of free text answers by applying text mining techniques, in particular, automatic text classification, enabling to group answers in homogeneous sets comprising answers with uniform quality. Thus, instead of grading answers in random order, the teacher may assess similar answers in sequence, one after the other. The teacher may also choose, for example, to grade free text answers in decreasing order of quality, the best first, or in ascending order of quality, starting to grade the group of the worst answers. The active learning techniques we are applying throughout the grading process generate intermediary models to automatically organize the answers still not fixed in homogeneous groups. These techniques contribute to reduce the time required for the assessment process, to reduce the occurrence of grading errors and improve detection of plagiarism. 

 

Keywords: text mining, active learning, free-text assisted grading

 

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Enhanced Approach of Automatic Creation of Test Items to foster Modern Learning Setting  pp23‑38

Christian Gutl, Klaus Lankmayr, Joachim Weinhofer, Margit Hofler

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Methodology for Evaluating Quality and Reusability of Learning Objects  pp39‑51

Eugenijus Kurilovas, Virginija Bireniene, Silvija Serikoviene

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Fluidity in the Networked Society ‑ Self‑initiated learning as a Digital Literacy Competence  pp52‑62

Karin Tweddell Levinsen

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Discovering Student Web Usage Profiles Using Markov Chains  pp63‑74

Alice Marques, Orlando Belo

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Assessing Student Transitions in an Online Learning Environment  pp75‑86

Minoru Nakayama, Hiroh Yamamoto

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Science, Sport and Technology ‑ a Contribution to Educational Challenges  pp87‑97

Kelly O’Hara, Paula Reis, Dulce Esteves, Rui Brás, Luísa Branco

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From Soap Opera to Research Methods Teaching: Developing an Interactive Website/DVD to Teach Research in Health and Social Care  pp98‑104

Abigail Sabey, Sue Horrocks

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A Different Vision in eLearning: Metaphors  pp105‑114

Nazime Tuncay, Ioana Andreea Stanescu, Mustafa Tuncay

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