1994: Srinivas and Deb propose NSGA for multiobjective optimization . 1995: Kennedy and Eberhart propose particle swarm optimization . 1995: Wolpert and Macready prove the no free lunch theorems. 1996: Muhlenbein and Paas work on the estimation of distribution algorithm . 1996: Hansen and Ostermeier propose CMA-ES . 1997: Storn and Price propose