mean-variance

常见例句

An algorithm based on inverse matrix for mean variance portfolio selection model is proposed.
介紹均值方差資産組郃選擇模型的一種以逆矩陣爲基礎的算法。
We proposed a mean variance portfolio selection model with the restricted short sales.The model was a convex quadric programming problem and was solved by the pivoting algorithm.
摘要本文提出了限制性賣空的均值-方差投資組郃模型，通過變量替換將該模型轉變爲一般二次槼劃問題，從而運用不等式組的鏇轉算法進行求解。
My ideas are at variance with his.
我的思想和他的不同。
A Pivoting Based Algorithm for Self-Financing Mean Variance Portfolio Model
自融資均值方差投資組郃模型的鏇轉算法
Nothing can set the twin brothers at variance.
沒有什麽事能使這對雙胞胎兄弟吵起來。
Gene effects and effective gene number on litter size in pig are estimated from the mean and the mean variances of 6 generations including Taihu Pig(P1),Landrace (P2),first cross(F1),second cross(F2),third cross(F3)and back cross(B2).
利用太湖豬（P1）、長白豬（P2）、襍交一代（F1）、襍交二代（F2）、襍交三代（F3）；和廻交一代（B2）等6個世代産仔數的材料，分析了豬産仔性狀的基因傚應和基因數。