题目在 6 ]. U- F$ d! | Q$ t- B$ E! H: ghttp://www.aswetalk.org/bbs/blog-1753-7898.html # O. C) @. f5 F 7 o* _4 H& x! \- i( d4 y这回不明白的地方多了。还请高手指点:9 I0 M$ }: m3 q( y+ \3 N) [
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1.不知道。 高低中音什么的一点都不知道。不过解题思路就是找可能的组合个数。6 D. B/ e/ f" y g
2 ^% j! l4 ?0 b7 ]# s5 c2 well, I can reason a bit from the names of these optimization types. The advantage of randomized optimization is for looking for global minimum without being trapped by a local minimum (which is often the case for deterministic optimization). so far (a few years ago before I left school, to be accurate) optimization is cursed by dimensionality, and random optimization has only limited success. : D" e: w6 }2 f3 N
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3. 没听说过傅里叶空间插值。如果有的话也不奇怪。那么像实空间插值类似,傅里叶空间插值能准确复原已知频率的结果。别的还有什么呢? - A2 s( c8 N7 q* |% y: i* f* ?% M 5 X) ~' j( a' E: x+ H/ A/ G5 x4.不知道。我只知道复数比较奇妙。有个柯西定理,复函数如果一阶可导,则无穷阶可导。这在实函数是不可能的。% q% \9 V+ Z% i! z$ h) K E6 ~ \' r
可是本质区别是什么哪? 2 }. t( @4 i; z ~4 r( N* a q+ _3 C5.一样大。1 ?) D; B1 }) Y1 a) z N