variance n. 1.變化,變動,變更;變度,變量;【統(tǒng)計】(平)方(偏)差。 2.(意見等的)相異;不和,沖突,爭論。 3.【法律】訴狀和供詞的不符。 at variance with 和…不和;和…不符 (at variance with the facts 不符事實。His conduct is at variance with his words. 他言行不符)。 set at variance 使不睦,離間。
reduction n. 1.縮小,減少;降級,降位;(刑罰等的)輕減;減速;減價,折扣。 2.(城市、國家等的)陷落,投降,被征服、變成 (to; into)。 3.破落,沒落;【物理學(xué)】衰減。 4.類別;碎礦;提煉。 5.【數(shù)學(xué)】簡化,約簡,縮減;化歸。 6.(測量結(jié)果的)整理,(代號等的)譯解;【無線電】訂正。 7.【化學(xué)】還原法,改格法;【攝影】減薄。 a 10% reduction 九折。 great reductions in prices 大減價。 the reduction of armaments 裁(減)軍(備)。 ascending [descending] reduction 由小[大]單位改成大[小]單位的換算法。 reduction to absurdity=reductio ad absurdum.
High variance reduction and processing time saving due to systematic descriptive sampling could be expected 用系統(tǒng)描述性抽樣代替蒙特卡羅的隨即抽樣過程,從而使得計算效率與降低方差都得到了明顯地改善。
百科解釋
In mathematics, more specifically in the theory of Monte Carlo methods, variance reduction is a procedure used to increase the precision of the estimates that can be obtained for a given number of iterations. Every output random variable from the simulation is associated with a variance which limits the precision of the simulation results.