Publications
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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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Developing Educational Software Components
Educational applications must be very flexible because curricula and teaching styles vary tremendously among institutions, locations, and even among instructors at the same institution.
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Self-Consistency, A Novel Approach to Characterizing the Accuracy and Reliability of Point-Correspondence Algorithms
We present a framework for reliably and robustly detecting changes in terrain (or other 3-D objects) over time.
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Educational Software Components Of Tomorrow
In this paper, we report some of the early results from our testbed for developing interoperable components for middle school mathematics, as well as some of the difficult challenges that…
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Generating Qualitatively Different Plans through Metatheoretic Biases
With the objective of fostering increased user participation in the planning process, this paper presents an HTN-based framework for the abductive completion of plan sketches.
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Globe Year 4 Evaluation: Evolving Implementation Practices
GLOBE students are involved in authentic science investigations, led by GLOBE scientists who have designed the data collection protocols and review and analyze the student data.
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Interpretation of Discourse and Proof Theory: Questions and Directions
A major theme of Johan’s Exploring Logical Dynamics is the move from using the tools of logic to analyze the products of cognitive processes to using those tools, including perhaps…