Sumit Basu


2015

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Deep Questions without Deep Understanding
Igor Labutov | Sumit Basu | Lucy Vanderwende
Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 1: Long Papers)

2013

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Powergrading: a Clustering Approach to Amplify Human Effort for Short Answer Grading
Sumit Basu | Chuck Jacobs | Lucy Vanderwende
Transactions of the Association for Computational Linguistics, Volume 1

We introduce a new approach to the machine-assisted grading of short answer questions. We follow past work in automated grading by first training a similarity metric between student responses, but then go on to use this metric to group responses into clusters and subclusters. The resulting groupings allow teachers to grade multiple responses with a single action, provide rich feedback to groups of similar answers, and discover modalities of misunderstanding among students; we refer to this amplification of grader effort as “powergrading.” We develop the means to further reduce teacher effort by automatically performing actions when an answer key is available. We show results in terms of grading progress with a small “budget” of human actions, both from our method and an LDA-based approach, on a test corpus of 10 questions answered by 698 respondents.

2012

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Mind the Gap: Learning to Choose Gaps for Question Generation
Lee Becker | Sumit Basu | Lucy Vanderwende
Proceedings of the 2012 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies