Publications
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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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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…
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What we do not know about sequence analysis and sequence databases
The marriage of high-throughput nucleotide sequencing with computational methods for the analysis of nucleotide and protein sequences have ushered in a new era of molecular biology.
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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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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.
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Designing A Useful Evaluation Of The Comer School Development Program
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How Far Do Speakers Back Up in Repairs? A Quantitative Model
We propose a quantitative model that predicts the overall distribution of retrace lengths in a large corpus of spontaneous speech, based only on word position. Results have implications for modeling…
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A Framework for Detecting Changes in Terrain
We propose a methodology that estimates the accuracy and reliability of the results of any multiple-image point correspondence algorithm, without the need for ground truth or camera calibration.