Research article

Modification of the mean-square error principle to double the convergence speed of a special case of Hopfield neural network used to segment pathological liver color images

Rachid Sammouda^1* and Mohamed Sammouda^2*

¹  Dept. of Computer Science, University of Sharjah, Sharjah, UAE

²  Dept. of Computer & Information Science, Prince Sultan University, Riadh, Saudi Arabia

author email corresponding author email* Contributed equally

BMC Medical Informatics and Decision Making 2004, 4:22doi:10.1186/1472-6947-4-22

Published:	12 December 2004

Abstract

Background

This paper analyzes the effect of the mean-square error principle on the optimization process using a Special Case of Hopfield Neural Network (SCHNN).

Methods

The segmentation of multidimensional medical and colour images can be formulated as an energy function composed of two terms: the sum of squared errors, and a noise term used to avoid the network to be stacked in early local minimum points of the energy landscape.

Results

Here, we show that the sum of weighted error, higher than simple squared error, leads the SCHNN classifier to reach faster a local minimum closer to the global minimum with the assurance of acceptable segmentation results.

Conclusions

The proposed segmentation method is used to segment 20 pathological liver colour images, and is shown to be efficient and very effective to be implemented for use in clinics.