遇到求解一个复杂函数的最优解问题 设F(T)是一个关于多维的向量T的复杂函数表达式,现在想求取最优T值,s.t. min(F(T ))达到最小值 按照最初的设想是: a) 求出F(T)对于T的gradient decent表达式F'(T),给定一个T的初始值T_0,step size K 和tolerance value M, b) 将T_0代入F'(T)并normalization(F_n'(T_0)=F'(T_0)/|F'(T_0)|) c) 更新T为T_1(T_1=T_0-K*F_n'(T_0)),依此做iterarion,直到T的两次值T_n,T_n+1的 变化小于M 按照上述方法我尝试了一下,做了20次iteration后,F(T)的值是变小了,但是变化速 度很慢,比较费时间,有没有比较快速一些求解方法?
I met probation on a casual encounter when I was getting familiar with clemency. And thus the meaning of probation when I first learned it is: permission to be out of jail while convicted for a crime. probation has conditions such as a deposit called probation money. probation is form of clemency. there are other meanings of probation, one of which is trial period, like an internship.
【在 p*c 的大作中提到】 : why don't u provide the explanation, usage, and your own interpretation of : the word as well?
m*1
39 楼
勿以物喜勿以己悲
l*d
40 楼
呵呵,很受用啊! 不过是实话。
【在 h****i 的大作中提到】 : 谢谢,夸得我心里那个美。
s*h
41 楼
a rare meaning. 3.(law) a way of dealing with offenders without imprisoning them; a defendant found guilty of a crime is released by the court without imprisonment subject to conditions imposed by the court
probation, means under observing? I learned this word in the book what every driver must know
【在 p*c 的大作中提到】 : why don't u provide the explanation, usage, and your own interpretation of : the word as well?
a*a
45 楼
同问,clearance 是?
g*e
46 楼
哇,你这个黄玫瑰太漂亮了。
s*h
47 楼
yes, it's another meaning of probation. a trial period during which your character and abilities are tested to see whether you are suitable for work or for membership
【在 a*****3 的大作中提到】 : probation, means under observing? : I learned this word in the book what every driver must know