Publications
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Ink, Improvisation, And Interactive Engagement: Learning With Tablets
Instructional models that reflective educators develop and share with their peers can primarily drive advances in the use of tablets in education. Communities that form around platforms such as Classroom…
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Significance of Joint Features Derived from the Modified Group Delay Function in Speech Processing
This paper investigates the significance of combining cepstral features derived from the modified group delay function and from the short-time spectral magnitude like the MFCC.
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Sustaining A Community Computing Infrastructure For Online Teacher Professional Development: A Case Study Of Designing Tapped In
Based on more than nine years of design experience with Tapped In—an online community of practice for education professionals—we present a case study that discusses four design interventions that have…
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Teaching and California’s Future: California’s Teaching Force 2006: Key Issues and Trends
This annual report discusses trends in the supply, demand, and distribution of California teachers; details the impact of state policy changes on the teacher development system; and highlights themes that…
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Model Adaptation for Dialog Act Tagging
In this study we used the ICSI meeting corpus with high-level meeting recognition dialog act (MRDA) tags, that is, question, statement, backchannel, disruptions, and floor grabbers/holders. We performed controlled adaptation…
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Model Adaptation for Sentence Segmentation from Speech
This paper analyzes various methods to adapt sentence segmentation models trained on conversational telephone speech (CTS) to meeting style conversations. The sentence segmentation model trained using a large amount of…
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A Case Study in Engineering a Knowledge Base for an Intelligent Personal Assistant
We present a case study in engineering a large knowledge base (KB) to meet the requirements of a personal assistant. We discuss our KB development methodology and the engineering challenges…
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Presentation of Information for Link Analysis
SRI's LAW (Link Analysis Workbench) is a system that helps intelligence analysts detect occurrences of situations of interest by finding pattern instances in vast amounts of data using graph edit…
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Localization in Horizontal-Only Ambisonic Systems
We test the localization of horizontal-only Ambisonic reproduction systems using various test signals to separately evaluate low-frequency and mid-frequency localization.
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Infusing IT/STEM Skill Standards in Informal ITEST Learning
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A Study in Machine Learning from Imbalanced Data for Sentence Boundary Detection in Speech
We have constructed a hidden Markov model (HMM) system to detect sentence boundaries that uses both prosodic and textual information. Since there are more non-sentence boundaries than sentence boundaries in…
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Morphology-based Language Modeling for Conversational Arabic Speech Recognition
In this paper, we investigate improvements in Arabic language modeling by developing various morphology-based language models. We present four different approaches to morphology-based language modeling, including a novel technique called…