A stationary point which is neither a local maximum nor a local minimum point is called a saddle point. 一个既不是局部极大点又不是局部极小点的平稳点称为一个鞍点。
At the same time it can make the solution escape local extreme value and cause the overall optimization capacity when the solution approximates the minimum point. 当解逼近当前极小点的后，动态方程又能使解逃逸局部极值，使其具有全局寻优能力。
