The Insight Journal logo

A Gradient Descent Trust Region Optimizer

Brooks, Rupert
Elekta LTD, Soft Tissue Imaging
The Insight Journal logo

Please use this identifier to cite or link to this publication:
New: Prefer using the following doi:
Submitted by Rupert Brooks on 2011-08-11 07:25:35.

This document describes a new simple gradient descent optimizer which is a potential replacement or supplement for RegularStepGradientDescentOptimizer. The optimizer requires only the gradient of the parameters and uses a simple linear model internally. However, it follows the theoretical basis of a trust-region algorithm and is able to achieve greater efficiency on certain image registration cases.