Publications
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World Links Student Assessment Report, 1998-1999
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3–D Stereo Reconstruction of Human Faces driven by Differential Constraints
We propose a way to incorporate a priori information in a reconstruction process from a sequence of calibrated face images.
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EcoCyc: The Resource and the Lessons Learned
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The Probability Inquiry Environment: A Collaborative, Inquiry-Based Simulation Environment
We report on the Probability Inquiry Environment (PIE), which facilitates the development of probabilistic reasoning by making available collaborative inquiry activities and student-controlled simulations.
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Using the EcoCyc Database
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Prolegomena to a Theory of Disability, Inability and Handicap
In this paper we extend a theory of action, IPT to try to elucidate these concepts. This attempt at elucidation is itself at most a prolegomena to a study that…
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Combining Words and Speech Prosody for Automatic Topic Segmentation
We present a probabilistic model that uses both prosodic and lexical cues for the automatic segmentation of speech into topic units. The approach combines hidden Markov models, statistical language models,…
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Information extraction using HMMs and shrinkage
This paper advocates for the use of HMMs for information extraction.
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Trajectories From Today’s WWW To A Powerful Educational Infrastructure
Over the course of two days, the participants generated a wealth of ideas about the limitations of today’s web, its near-term trajectories, and potential educational advances. We share a summary…
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Cornerstones For An Online Community Of Education Professionals
Our goal is to learn how to grow a self-sustaining on-line community of education professionals that supports and enhances the professional growth of its members over the length of their…
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Efficient Lattice Representation and Generation
We describe two new techniques for reducing word lattice sizes without eliminating hypotheses.
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“…It’s Fair Because They Each Have Two”: The Development Of A Mathematical Practice Across Two Social Contexts
They have an equal chance of landing on...tails [R types] We think the game is fair because it has an equal chance of landing on heads as it has on tails.