$ C2 s2 S* V j7 T" q2 R6 i ^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。7 a# o; \$ R+ s: w5 a
9 I2 X# w: T8 k4 P2 r: 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. * L! V! s* T+ E, q6 N- S: n1 I: ~# J- p+ r0 v' q! V0 G G
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? " T: I% Z2 @* d$ L+ \- U P& C
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。$ M6 Z3 d0 i6 n/ ?
可是本质区别是什么哪? & ]$ p r: s: z* ]5 f( A2 ?9 k ' k) |4 B- z2 ~1 m5.一样大。" l2 A% `9 F' Y7 w+ x; M6 M