The difficulty is that there are classes of method and there are extensions to methods and it quickly becomes very difficult to determine what constitutes a canonicalalgorithm.
困难之处在于既有差别种类的方法，也有对这些方法的扩展。这导致很快就难以区分到底什么才是正统的算法。
2
The difficulty is that there are classes of method and there are extensions to methods and it quickly becomes very difficult to determine what constitutes a canonicalalgorithm.
困难之处在于既有不同种类的方法，也有对这些方法的扩展。这导致很快就难以区分到底什么才是正统的算法。
3
Then immune evolutionary algorithm is used to train the RBF network, which reduces the searching space of canonical evolutionary algorithm and improves the convergence speed.