A multi-tier NL-knowledge clustering for classifying students' essays

Umarani Pappuswamy, Dumisizwe Bhembe, Pamela W. Jordan, Kurt Vanlehn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In this paper, we describe a multi-tier Natural Language (NL) clustering approach to text classification for classifying students' essays for tutoring applications. The main task of the classifier is to map the students' essay statements into target concepts, namely physics principles and misconceptions. A simple 'Bag-Of-Words (BOW)' classifier using a naïve-Bayes algorithm was unsatisfactory for our purposes as it frequently misclassified due to the semantic relatedness of the NL descriptions of the target concepts. We describe how we used the NL descriptions to define clusters of concepts that reduce the dimensionality of the data when classifying students' essays. The clustering generated multi-tier tagging schemata (cluster, sub-cluster and class) which led to better classification of the student's essay.

Original languageEnglish (US)
Title of host publicationRecent Advances in Artifical Intelligence - Proceedings of the Eighteenth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2005
EditorsI. Russell, Z. Markov
Pages566-571
Number of pages6
StatePublished - Dec 1 2005
Externally publishedYes
EventRecent Advances in Artifical Intelligence - Eighteenth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2005 - Clearwater Beach, FL, United States
Duration: May 15 2005May 17 2005

Publication series

NameProceedings of the Eighteenth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2005 - Recent Advances in Artifical Intelligence

Other

OtherRecent Advances in Artifical Intelligence - Eighteenth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2005
CountryUnited States
CityClearwater Beach, FL
Period5/15/055/17/05

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Pappuswamy, U., Bhembe, D., Jordan, P. W., & Vanlehn, K. (2005). A multi-tier NL-knowledge clustering for classifying students' essays. In I. Russell, & Z. Markov (Eds.), Recent Advances in Artifical Intelligence - Proceedings of the Eighteenth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2005 (pp. 566-571). (Proceedings of the Eighteenth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2005 - Recent Advances in Artifical Intelligence).