Based on study of the existing evolutionary algorithms' property and enlightened by the immune principle of creature, a novel evolutionary algorithm-IEA is proposed. The core of IEA is to make full use of the information of the elitist. IEA makes the offspring population through the elitist of the parent population, and it pursues the convergence of the elitist in stead of that of population. Besides that, certain ways are adopted to guide the random search dynamically in the evolutionary process. Compared...