Publications
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Improvements in MLLR-Transform-based Speaker Recognition
We previously proposed the use of MLLR transforms derived from a speech recognition system as speaker features in a speaker verification system. In this paper we report recent improvements to…
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A Study of Intentional Voice Modifications for Evading Automatic Speaker Recognition
We investigate the effect of intentional voice modifications on a state-of-the-art speaker recognition system. The investigation includes data collection, where normal and changed voices are collected from subjects conversing by…
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Information scent and Web navigation: theory, models and automated usability evaluation
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Conflict Negotiation Among Personal Calendar Agents
We will demonstrate distributed conflict resolution in the context of personalized meeting scheduling. The demonstration will show how distributed constraint optimization can be used to facilitate interaction between cognitive agents…
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Reduced Resolution Residual Coding for H.264-Based Compression System
This paper describes a macroblock-based mixed resolution video encoding system. By reducing the spatial resolution of some macroblock residuals intelligently, our preliminary experiments show up to 20% improvement in video…
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Computer-Mediated Collaborative Reasoning and Intelligence Analysis
We introduce a framework spanning the entire collaborative thought process using the Angler and SEAS (Structured Evidential Argumentation System) applications. Angler encourages creative brainstorming while SEAS demands analytical reasoning. The…
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NOMOS: A Semantic Web software framework for annotation of multimodal corpora
We present NOMOS, an open-source software framework for annotation, processing, and analysis of multimodal corpora.
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Joint Segmentation and Classification of Dialog Acts in Multiparty Meetings
This paper investigates a scheme for joint segmentation and classification of dialog acts (DAs) of the ICSI Meeting Corpus based on hidden-event language models and a maximum entropy classifier for…
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Combining Prosodic, Lexical and Cepstral Systems for Deceptive Speech Detection
We report on machine learning experiments to distinguish deceptive from nondeceptive speech in the Columbia-SRI-Colorado (CSC) corpus. Specifically, we propose a system combination approach using different models and features for…
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Deductive Discovery and Composition of Resources
We consider the problem of answering a query, where the answer is not provided explicitly by any one resource, but has to be deduced from information provided by many resources;…
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Early College High School Initiative: 2003-2005 Evaluation Report
This report is the second annual synthesis report on the national evaluation of the Bill & Melinda Gates Foundation ’s Early College High School Initiative (ECHSI). The foundation established the…
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Report On Technical Quality Of 6th And 8th Grade Student Assessments For The Tides Project
This report describes activities undertaken to create, pilot, and analyze technical quality of student assessments in sixth and eighth grades for the Transforming Instruction by Design in Earth Science (TIDES)…