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Now showing items 91-100 of 441
How are Three-Deminsional Objects Represented in the Brain?
(1994-04-01)
We discuss a variety of object recognition experiments in which human subjects were presented with realistically rendered images of computer-generated three-dimensional objects, with tight control over stimulus shape, ...
Learning from Incomplete Data
(1995-01-24)
Real-world learning tasks often involve high-dimensional data sets with complex patterns of missing features. In this paper we review the problem of learning from incomplete data from two statistical perspectives---the ...
On the Convergence of Stochastic Iterative Dynamic Programming Algorithms
(1993-08-01)
Recent developments in the area of reinforcement learning have yielded a number of new algorithms for the prediction and control of Markovian environments. These algorithms, including the TD(lambda) algorithm of Sutton ...
Cooperative Physics of Fly Swarms: An Emergent Behavior
(1995-04-11)
We have simulated the behavior of several artificial flies, interacting visually with each other. Each fly is described by a simple tracking system (Poggio and Reichardt, 1973; Land and Collett, 1974) which summarizes ...
The Quadric Reference Surface: Theory and Applications
(1994-06-01)
The conceptual component of this work is about "reference surfaces'' which are the dual of reference frames often used for shape representation purposes. The theoretical component of this work involves the question ...
Hierarchical Mixtures of Experts and the EM Algorithm
(1993-08-01)
We present a tree-structured architecture for supervised learning. The statistical model underlying the architecture is a hierarchical mixture model in which both the mixture coefficients and the mixture components are ...
Embedded discontinuities for softening solids
(Proceedings of the 4th Asia-Pacific Conference on Computational Mechanics (APCOM '99)Proceedings of the 4th Asia-Pacific Conference on Computational Mechanics (APCOM '99), 1999-12-06)
Additional, discontinuous functions are added to the displacement field of standard finite elements in order to capture highly localised zones of intense straining. By embedding discontinuities within an element it is ...
Three-Dimensional Correspondence
(1998-12-01)
This paper describes the problem of three-dimensional object correspondence and presents an algorithm for matching two three-dimensional colored surfaces using polygon reduction and the minimization of an energy function. ...
A Security Kernel Based on the Lambda-Calculus
(1996-03-13)
Cooperation between independent agents depends upon establishing adegree of security. Each of the cooperating agents needs assurance that the cooperation will not endanger resources of value to that agent. In a computer ...
Direct Object Recognition Using No Higher Than Second or Third Order Statistics of the Image
(1995-12-01)
Novel algorithms for object recognition are described that directly recover the transformations relating the image to its model. Unlike methods fitting the typical conventional framework, these new methods do not ...