Evolutionary design of polymorphic circuits with the improved evolutionary repair

In our previous work [1], the evolutionary repair technique has been introduced into the evolutionary design of the combinational logic circuits. In this paper, the evolutionary repair technique is improved, in which the number of the input vectors of the repair circuit is usually smaller than that of the corresponding incomplete circuit. The evolutionary algorithm with the improved evolutionary repair technique (i.e. erEDAII) is used to generate the polymorphic circuits. Experimental results demonstrate that some polymorphic circuits are evolved by erEDAII effectively. Especially, the polymorphic circuit with 8 inputs and 8 outputs could be evolved by the erEDAII.