The invention has been disclosed in published application US 1999/0175930.
However, the inventor finds that there are still some drawbacks in the prior art, especially with regard to the evolutionary patterns in the software domain. For example, in some cases the software's knowledge is not dynamic. Although it is the software itself that evolves to solve a specific problem, in most cases it shall be removed from its main job and involved in another unrelated job. For instance, in the prior art GA is mainly 50e0806aeb horkes
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