Paper: Elicited Imitation for Prediction of OPI Test Scores

ACL ID W11-1404
Title Elicited Imitation for Prediction of OPI Test Scores
Venue Innovative Use of NLP for Building Educational Applications
Session
Year 2011
Authors

Automated testing of spoken language is the subject of much current research. Elicited Imitation (EI), or sentence repetition, is well suited for automated scoring, but does not di- rectly test a broad range of speech communi- cation skills. An Oral Proficiency Interview (OPI) tests a broad range of skills, but is not as well suited for automated scoring. Some have suggested that EI can be used as a predictor of more general speech communication abilities. We examine EI for this purpose. A fully au- tomated EI test is used to predict OPI scores. Experiments show strong correlation between predicted and actual OPI scores. Effective- ness of OPI score prediction depends upon at least two important design decisions. One of these decisions is to base prediction primar- ily on acoustic measures...