Publications
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The Organization Of Learning In Community Technology Centers: Learning With Technology In Six Communities
The growing gap in achievement between low- and middle-income students in the past decade and a widening opportunity gap in the workforce have coincided with the broad social and economic…
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Review Of On-Line Learning Practices
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To “Errrr” is Human: Ecology and Acoustics of Speech Disfluencies
The ecological and acoustic evidence provide insights about human language production in real-world contexts. Such evidence can also guide methods for the processing of spontaneous speech in automatic speech recognition…
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Leverage Points For Improving Educational Assessment
This presentation first reviews an evidence-centered framework for designing and analyzing assessments. It then uses this framework to discuss and to illustrate how advances in technology and in education and…
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Mobile Wireless Devices In Mathematics Education
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The .geo-web: A Scalable Index for the Digital Earth
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An Efficient Repair Procedure For Quick Transcriptions
The procedure we propose in this paper aims to em cleanse/ such quick transcriptions so that they align better with the acoustic evidence and thus provide for better acoustic models…
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Finding Consensus in Speech Recognition: Word Error Minimization and Other Applications of Confusion Networks
We describe a new framework for distilling information from word lattices to improve the accuracy of speech recognition and obtain a more perspicuous representation of a set of alternative hypotheses.
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Machine Learning Techniques for the Identification of Cues for Stop Place
This paper is situated in a long line of phonetic studies that seek to determine and qualify the acoustic cues humans use to identify stop place. The present study draws…
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Prosodic Features for Automatic Text-Independent Evaluation of Degree of Nativeness for Language Learner
Predicting the degree of nativeness of a student's utterance is an important issue in computer-aided language learning.
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The Multimedia Challenge
The Belmont Then and Now project, completed in 2000 by three 3rd grade classes from Central Elementary, helps put Belmont's changes over the past 150 years in perspective.
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Consonant Discrimination in Elicited and Spontaneous Speech: A Case for Signal-Adaptive Front Ends in ASR
This work investigates an approach to add back such transient information to a speech recognizer, without losing the robustness of the standard acoustic models. We demonstrate a set of phonetically-motivated…