Publications
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Characterizing Adaptive Expertise In Science Teaching: Report On A Laboratory Study Of Teacher Reasoning
Our goal in this project is to apply the concept of adaptive expertise to science teaching in order to understand what benefits adaptiveness confers to teachers’ learning, development, and performance.
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Ontology-based multi-party meeting understanding
This paper describes current and planned research efforts towards developing multimodal discourse understanding for an automated personal office assistant.
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Expert Panel Review of OERL’s Instructional Utility
The OERL team has adapted and integrated several evaluation methodologies to examine patterns of usage, customer satisfaction, and the instructional utility of the site. These methods include surveys of target…
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Measuring Student Learning Gains In Conceptual Mathematics When Scaling A Technological Intervention For Middle School Mathematics
In this paper, we present our assessment development process, its rationale, and the data we have collected (and continue to collect) to support our argument for the instrument’s validity.
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Introduction to special issue on sensing-based interaction
Sensing-based interaction is at the core of, or synonymous with, many emerging or fast developing areas of human-computer interaction research, including pervasive, ubiquitous or context aware computing, intelligent environments, augmented…
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Fostering Collaboration with a Semantic Index over Textual Contributions
We are exploring new approaches to facilitating effective collaboration that remove or reduce common barriers and that exploit opportunities to encourage more effective collaboration, including transcending the cognitive biases of…
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A Personalized Time Management Assistant
This paper presents ongoing work to build the Personalized Time Manager (PTIME) system, a persistent assistant that builds on our previous work on a personalized calendar agent.
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Improved Phonetic Speaker Recognition Using Lattice Decoding
In this paper, we present results on the Switchboard-2 corpus, where we compare 1-best phone decodings versus lattice phone decodings for the purposes of performing phonetic speaker recognition.
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Structural Metadata Research in the EARS Program
In this paper we provide a brief overview of research on structural metadata extraction in the DARPA EARS rich transcription program. Tasks include detection of sentence boundaries, filler words, and…
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Reference-Free Objective Quality Metrics for MPEG-Coded Video
In this paper, we propose a reference-free video quality metric for MPEG coded videos. It predicts subjective quality ratings using both reference-free MPEG artifact measures and MPEG system parameters (known…
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Teaching To The Test? A Comparison Of Two High Schools’ Responses To Mandated Testing
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SRI’s 2004 NIST Speaker Recognition Evaluation System
This paper describes our recent efforts in exploring longer-range features and their statistical modeling techniques for speaker recognition. In particular, we describe a system that uses discriminant features from cepstral…