Monday, June 23, 2008

everthing by 柯西不等式l

柯西-施瓦兹不等式:

Fourier transform

developement of knowledge

assimilation: project unknown into know orthogonal axises
and compilation: expand basis

the different 'mean'

arithmetical mean: MLE for Gaussian distribution
geometric mean: MLE for exponential Gaussian distribution
median: MLE? for

Why there are only two types of sex?

mathematically maximum diversity with least degree