The genetic algorithm includes a special relation matrix coding scheme of chromosomes that can express simultaneously all of composite paths, which can not be expressed simultaneously by the one dimension coding scheme.

This paper researches the mechanism of matrix code,discusses algorithm skeleton and characteristics,comparatively fully depicts selection,crossover and mutation operators which are often used in matrix-coded genetic algorithm,and introduces some future research work as well.

It expatiates on the progesses in matrix-coded genetic algorithm research field,researches the mechanism,discusses algorithm skeleton and characteristic,and introduces some future research work.

Study on optimization of matrix encoding in auto-generating test paper system based on genetic algorithm;

One space field information hiding algorithm based on matrix encoding

Genetic algorithm with matrix encoding, different mutate operator, crossover operator and the selection operator based on order rank selection algorithm was applied to solve the problem.

A matrix code and color Image based information hiding algorithm is proposed in this paper,and the experi-ment results indicate that this algorithm can effectively reduce the modification of source image and have comparatively good PSNR and invisibility.

With a genetic algorithm based on the matrix coding for automatic formatting the test,we give both the cross operator and mutation operator.

In this article,we introduce matrix coding and its application in image data hiding briefly.

As to whether the matrix coding LSB method can improve the steganography s security, this paper estimates the stego image embedded by the matrix coding LSB method using RS method and a latest steganalysis method put forward by Fridrich in 2004.