Abstract: According to advantage of wading across the stream and estimation distribution algorithm,a hybrid wading across stream algorithm-estimation distribution algorithm (Hybrid WSA-EDA) was put forward.The Hybrid WSA-EDA acts a solution as a start point,then searches several random solutions near the start point,and finds out the best solution of these solutions.The center of some selection of good individual is crossed with the best solution and this solution is taken as the next start point,and then several random solutions near this start point are searched,and so on.For solving continuous optimization problem,the improved wading across stream algorithm shrink the search space gradually.The experiment results of some classic benchmark functions show that the Hybrid WSA-EDA extraordinarily improves the convergence velocity and precision.

Key words: Random optimization algorithm,Continuous space optimization,Wading across stream algorithm,Estimation distribution algorithm