AAAI Publications, Twenty-Fifth IAAI Conference

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Clustering Hand-Drawn Sketches via Analogical Generalization
Maria de los Angeles Chang, Kenneth Forbus

Last modified: 2013-06-28


One of the major challenges to building intelligent educational software is determining what kinds of feedback to give learners. Useful feedback makes use of models of domain-specific knowledge, especially models that are commonly held by potential students. To empirically determine what these models are, student data can be clustered to reveal common misconceptions or common problem-solving strategies. This paper describes how analogical retrieval and generalization can be used to cluster automatically analyzed hand-drawn sketches incorporating both spatial and conceptual information. We use this approach to cluster a corpus of hand-drawn student sketches to discover common answers. Common answer clusters can be used for the design of targeted feedback and for assessment.


clustering; analogical generalization; sketch understanding; educational data mining; intelligent tutoring

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