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System for Rating Constructed Responses Based on Concepts and a Model Answer

Author(s):
Leacock, Claudia; Chodorow, Martin; Bolge, Eleanor; Wolska, Magdalena
Patent Issued:
Feb 19, 2013
Patent Number:
8,380,491
Source:
ETS Patent
Document Type:
Patent
Family ID:
29214793
Subject/Key Words:
Patent, Active Patent, Constructed-Response Scoring, Automated Scoring and Natural Language Processing, Test Scores, Concepts

Abstract

A concept rater module is utilized to automatically grade or score constructed responses based on a model answer. The concept rater module may be configured to accept a model answer as input. The model answer may be used as a grading key by the concept rater module. The concept rater module may be further configured to accept student responses in a file format. The file format may be ASCII text, a formatted word processing (e.g., WORDPERFECT, MICROSOFT WORD, etc.) and the like. The concept rater module may be further configured to process a student response into a canonical representation of the student response. The canonical representation of the student response is compared against the model answer by the concept rater module. From the comparison, a score is generated which represents that student's ability to cover all the key concepts.

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