Diagram interpretation and e-learning systems

Authors:
Neil Smith;Pete Thomas;Kevin Waugh
Affiliations:
Computing Research Centre, The Open University, Milton Keynes, UK;Computing Research Centre, The Open University, Milton Keynes, UK;Computing Research Centre, The Open University, Milton Keynes, UK
Venue:
Diagrams'10 Proceedings of the 6th international conference on Diagrammatic representation and inference
Year:
2010

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Abstract

We describe a system capable of grading free-form diagrammatic answers. Our matches meaningful parts of a diagram with equivalents in a model solution. This is complicated by errors, omissions, and superfluous items in the student answer. The result of matching is used to calculate the grade and generate appropriate feedback; it performs at least as well as a human marker on a variety of diagram types. We describe tools that allow the easy creation of questions, marking schemes, and diagram editors suitable for embedding in a VLE quiz engine.