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RECENT VIDEOS

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01.11.2009
1 min
MIT Tech-TV

Classification and Dimensionality Reduction Using Geometric Level Sets

Stochastic Systems Group (SSG)
Learning classifier decision boundaries and an informative two-dimensional linear subspace jointly through variational level set methods and optimization on the Stiefel manifold. The two classes of measurements, the black + markers and the magenta x markers are eight-dimensional. Only the first two dimensions are informative for classification: the points are separable by an ellipse in those two dimensions. The other six dimensions are independent Gaussian noise. Starting from a random initialization for a two-dimensional subspace, and a poor initialization for a decision boundary, t method converges to the plane of the first two dimensions and an elliptical decision boundary that separates the two classes. The blue line is the decision boundary. The green polygon outlines the projection of an eight-dimensional hypercube onto two dimensions using the current dimensionality reduction mapping. When aligned to two dimensions, the polygon is a square. Visit http://lids.mit.edu/research/project-highlights/classification-and-dimensionality.html for more information.
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01.11.2009
5 mins
MIT Tech-TV

Knowledge Harvesting with the Mel King Fellows

The Community Innovators Lab
Knowledge Harvesting with the Mel King Fellows


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01.6.2009
42 mins
MIT Tech-TV

BLOSSOMS - Soap Bubbles

Blended Learning Open Source Science or Math Studies (BLOSSOMS)
As magic and ephemeral as they may seem, soap bubbles are a magnificent example of precise mathematics, physics and chemistry at work. This video lesson explores the science that explains soap bubbles, as well as the application of this knowledge to other areas, such as architecture and biology.
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01.5.2009
6 mins
MIT Tech-TV

Pedal Thresher Invention

Lemelson-MIT Program
Video profile of the Pedal Thresher, an adaptive, pedal-operated multi-grain thresher, as invented by the Teen Technology InvenTeam from Bridgewater, New Jersey.

For more information about the Lemelson-MIT Program, visit web.mit.edu/invent

For more information about the InvenTeam initiative, visit web.mit.edu/inventeams
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01.5.2009
4 mins
MIT Tech-TV

HeatSource Invention

Lemelson-MIT Program
HeatSource is an award-winning invention from the MIT IDEAS Competition, sponsored by the Lemelson-MIT Program.

For more information about the Lemelson-MIT Program, visit web.mit.edu/invent

For more information about the MIT IDEAS Competition, visit web.mit.edu/ideas/www/
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