6.1 Non-asymptotic Analysis:Concentration inequality Based on Taylor series expansion,we arrive at -]小 DeoB=,henee wen%≥8p，叱2作1，his 5.学 Hnce ege[ew]s2辰e-2a 1111 Based on Taylor series expansion, we arrive at 6.1 Non-asymptotic Analysis: Concentration inequality ( ) ( ) 1 2 1 1/4 1/4 4 2 2 1 1! 2! e e e        = + + +         Due to 2 2 t n L  =  , hence when , 2 8 t n L   2 1    , thus   1/4 1+2 ( 1) C C e e  −      − =    Hence we get ( ) ( ) 1 2 1 1/4 1/4 4 1/4 2 1 2 1+2 ( 1) 1! 2! e e e e           + + + = −         