自适应滤波，对输入信号进行选择性的加权处理，使输出达到最优化，并且能够跟踪和适应系统和环境的动态变化-Least mean square，of the input signal processing, selective weighted output, and optimize can track and adapt to the dynamic changes of the system and environment

在FPGA的平面规划中实现pin与buffer之间的最优化匹配,实现所有的路径最短。-In FPGA design, realize the matching between pins and buffers by finding the shortest path for all the pins.