Istituto di Scienza e Tecnologie dell'Informazione     
Esuli A., Sebastiani F. Machines that learn how to code open-ended survey data. In: International Journal of Market Research, vol. 52 (6) pp. 775 - 800. Market Research Society, 2010.
We describe an industrial-strength software system for automatically coding open-ended survey responses. The system is based on a learning metaphor, whereby automated verbatim coders are automatically generated by a general-purpose process that learns, from a user-provided sample of manually coded verbatims, the characteristics that new, uncoded verbatims should have in order to be attributed the codes in the codeframe. In this paper we discuss the basic workings of this software and present the results of experiments we have run on several datasets of real respondent data, in which we have compared the accuracy of the software against the accuracy of human coders.
URL: http://www.ijmr.com/Contents/CurrentIssue.asp
DOI: 10.2501/S147078531020165X
Subject Survey coding
Open-ended questions
Open-ended responses
Automatic coding
Machine learning
Opinion mining
Sentiment analysis
I.2.6 Learning (K.3.2)
I.5.2 Design Methodology. Classifier design and evaluation
J.1 Administrative Data Processing. Marketing

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