Publications
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The Past, Present, and Future of Speech Processing
This article provides a succinct review of the history and current status of the field of speech processing research and describes future contributions speech processing will make to society.
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Family Outcomes in Early Intervention: A Framework for Program Evaluation and Efficacy Research
In this article we suggest eight questions that could serve as a framework for determining the extent to which early intervention has accomplished the goals inherent in a family-centered approach.
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Performance Assessment Links In Science (Pals): On-Line, Interactive Resources
We will discuss the role performance assessments can play in education reforms, suggest how technology expands the ways in which educators can access and use standards-based assessments and more.
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Plywood Walls And Exposed Pipes: Supporting A Culture Of Learning In An On-Line Teacher Professional Development Community
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Nonlinear Discriminant Feature Extraction for Robust Text-Independent Speaker Recognition
We study a nonlinear discriminant analysis (NLDA) technique that extracts a speaker-discriminant feature set. Our approach is to train a multilayer perceptron (MLP) to maximize the separation between speakers by…
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Innovation In Urban School Settings: Integrating Contexts And Tools In Support Of Learning
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Dialog Act Modeling for Conversational Speech
We describe an integrated approach for statistical modeling of discourse structure for natural conversational speech. Our model is based on 42 `dialog acts', which were hand-labeled in 1155 conversations from…
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Entropy-based Pruning of Backoff Language Models
A criterion for pruning parameters from N-gram backoff language models is developed, based on the relative entropy between the original and the pruned model. It is shown that the relative…
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The Development of SRI’s 1997 Broadcast News Transcription System
This paper describes SRI's 1997 broadcast news transcription system used for the 1997 DARPA H4 evaluations. Our system had several novel components. We briefly describe these features and give comparative…
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New Developments in Lattice-Based Search Strategies in SRI’s Hub4 System
We describe new developments in SRI's lattice-based progressive search strategy. These developments include the implementation of a new bigram lattice algorithm, lattice optimization techniques, and expansion of bigram lattices to…
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Speech Technology and Language Learning: Some Examples from VILTS, the Voice Interactive Language Training System
In this paper we describe the development of the Voice Interactive Language Training System (VILTS) and our experience in exploring the potential of speech technology in service to language learning.
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Coordinating Planning Activity and Information Flow in a Distributed Planning System
Distributed SIPE (DSIPE) is a distributed planning system that provides decision support to human planners in a collaborative planning environment.