Article | Proceedings of the second workshop on NLP for computer-assisted language learning at NODALIDA 2013; May 22-24; Oslo; Norway. NEALT Proceedings Series 17 | Constraints in Free-input Question-Answering Drills

Title:
Constraints in Free-input Question-Answering Drills
Author:
Lene Antonsen: University of Tromsø, Norway
Download:
Full text (pdf)
Year:
2013
Conference:
Proceedings of the second workshop on NLP for computer-assisted language learning at NODALIDA 2013; May 22-24; Oslo; Norway. NEALT Proceedings Series 17
Issue:
086
Article no.:
002
Pages:
11-26
No. of pages:
16
Publication type:
Abstract and Fulltext
Published:
2013-05-17
ISBN:
978-91-7519-588-9
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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This article describes a set of question-answer drills for language learning for a richly inflected language. The drills have been in actual use for some time. They allow for free input and make use of a constraint-grammar-based system; which anticipates a number of grammatical errors and common misspellings and gives certain response types. The interactions between student and computer are recorded; and the log reveals that the free-input approach comes at a price: students tend to avoid complex constructions. In order to force the student to answer with more complex constructions; while still keeping the free-input approach; we implemented a solution with more constraints for the input. The exercise items are generated and each template gives rise to a huge numbers of exercises. Constraint grammar makes it easy to control for both grammar errors and adherence to the constraints given in the task. The evaluation on authentic learner data shows that constraining the user’s input with the question itself; makes it possible to analyse the student’s free input; with very good precision and recall. But parsing the input is only a part of the challenge of designing real-life ICALL systems. The article discusses other design issues related to question-answering drills.

Keywords: Constraint Grammar; ICALL; Grammar Exercises; Syntax

Proceedings of the second workshop on NLP for computer-assisted language learning at NODALIDA 2013; May 22-24; Oslo; Norway. NEALT Proceedings Series 17

Author:
Lene Antonsen
Title:
Constraints in Free-input Question-Answering Drills
References:

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Proceedings of the second workshop on NLP for computer-assisted language learning at NODALIDA 2013; May 22-24; Oslo; Norway. NEALT Proceedings Series 17

Author:
Lene Antonsen
Title:
Constraints in Free-input Question-Answering Drills
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