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UAI
2001
13 years 10 months ago
Policy Improvement for POMDPs Using Normalized Importance Sampling
We present a new method for estimating the expected return of a POMDP from experience. The estimator does not assume any knowledge of the POMDP, can estimate the returns for finit...
Christian R. Shelton
JMLR
2010
191views more  JMLR 2010»
13 years 3 months ago
Noise-contrastive estimation: A new estimation principle for unnormalized statistical models
We present a new estimation principle for parameterized statistical models. The idea is to perform nonlinear logistic regression to discriminate between the observed data and some...
Michael Gutmann, Aapo Hyvärinen
VISUALIZATION
1997
IEEE
14 years 1 months ago
A comparison of normal estimation schemes
The task of reconstructing the derivative of a discrete function is essential for its shading and rendering as well as being widely used in image processing and analysis. We surve...
Torsten Möller, Raghu Machiraju, Klaus Muelle...
DICTA
2003
13 years 10 months ago
Estimation of Surface Normal of a Curved Surface Using Texture
Shape-from-Texture is the problem of estimating an object’s shape by examining the apparent distortions in the surface texture of the object due to image capture. A new method is...
Angeline Loh, Peter Kovesi
IJRR
2007
335views more  IJRR 2007»
13 years 8 months ago
Homography-based 2D Visual Tracking and Servoing
The objective of this paper is to propose a new homography-based approach to image-based visual tracking and servoing. The visual tracking algorithm proposed in the paper is based...
Selim Benhimane, Ezio Malis