"We all have a responsibility to bear witness to what we see and to speak out against injustice."
人的精神本喜欢清净,但被心所扰乱;人心本喜欢宁静,但被欲望所牵引。
系统辨识的挑战不仅在于拟合数据,还在于提取有意义且可推广的模型。