The properly designed code matrix and group interference suppression method are used in this approach.

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.

atrix code recognition is the key technique of the applied matrix code system.

This method utilizes 2D matrix markers, being composed of matrix code ,which can identify a large number of objects.

On the basis of introducing matrix code disk, the determination methods ofcode track pattern directions of nomal and non-normal matrix code disks are analyzed, the testing methods of errors of the phase relations between matrix disk code tracks and between different circles-angle magnitude and line magnitude comparing methods described, and finally a discussion on measurement errors is given.

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.