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题目在9 Z7 r6 H3 _. i0 W6 H( R i) d( W% y
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这回不明白的地方多了。还请高手指点:* M" p2 h9 [' K" r3 K7 A' C8 ~7 |" \. L
* P/ w! ~2 n; z0 ]! ^! Z1.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。& u' D9 P/ g* V5 R0 w# I1 {& i
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2 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.
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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?! {" r0 a& m" b* F
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4.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。
) h# j) J4 _$ v0 q5 `可是本质区别是什么哪?% ~# f+ s( R$ [- h0 ?; ]
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5.一样大。
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6.蒙特卡洛的实质?我也不知道。它的误差是 O(1/sqrt(N)), N是sample个数。4 w3 h4 h% y4 p( ~* ~9 u& z/ h2 C
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