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variance-covariance matrix中文是什么意思
發音:
- 中文翻譯
- 造句
- 變量-協變量矩陣
- 方差-協方差矩陣
- variance n. 1.變化，變動，變更；變度，變量；【統計】(平)方 ...
- covariance n. 【統計學】協方差，協變性；共離散。
- matrix n. (pl. matrices 或matrixes) ...
- nonscalar variance-covariance matrix 非純量方差-協方差矩陣
- sample variance-covariance matrix 樣本方差協方差矩陣
- variance covariance matrix 方差-協方差矩陣
- variance covariance 變異數協方差
- covariance matrix 歷方差矩陣, 協變矩陣; 協方差矩陣; 協方差距陣; 協方差陣
- analysis of variance and covariance 變方與變積分析
- variance-covariance propagation law 協方差傳播律
- variance matrix 方差矩陣
- asymptotic covariance matrix 漸近協方差矩陣
- conditional covariance matrix 條件協方差矩陣
- covariance matrix estimation 協方差矩陣估計
- diagonal covariance matrix 對角協方差矩陣
- factor covariance matrix 因素協方差矩陣
- finite covariance matrix 有限協方差矩陣
- image covariance matrix 圖像協方差矩陣; 圖象協方差矩陣
- nonscalar covariance matrix 非純量協方差矩陣
- nonscalar disturbance covariance matrix 非純量擾動協方差矩陣
- positive definite covariance matrix 正定協方差矩陣
- sample covariance matrix 樣本協方差矩陣; 樣本協方差陣
- scalar covariance matrix 純量協方差矩陣
- within-group covariance matrix 組內協方差陣
- pooled within-groups covariance matrix 合并的組內協方差矩陣
- All these estimates are feasible unbiased estimates . we use the quotient of the determinant of the variance - covariance matrix of the feasible unbiased estimates , that is , a kind of relative efficency to compare these esti - mates . the results have instructive significance for practice
我們應用這些估計的協方差陣的行列式之商，即一種相對效率比較了這些估計的優劣，所得結果對實際應用具有一定指導意義。 - Panel data model is an important linear model in economics , finance , biology , medicines and other fields . in recent twenty years , statistical in - ferrence about this model attracts many statisticians . in this paper , we first generalize the latest development of parameter estimation in this field , then focus on parameter estimation in the panel model with individual effect and time effect . many articles researched the parameter estimation of the regression coefficents in the case that both individual effect and time effect are random , but in some conditions , it is more reasonable if we suppose either of them is fixed . this paper is based on this hypothesis to research the estimations of the coefficents . the variance - covariance matrix still include parameter of variance in this condition , so our purpose is to look for feasible estimations
Panel數據模型是一類具有重要應用的線性統計模型，它在經濟、金融、生物、醫學等領域都有廣泛的應用。近二十余年來，關于這種模型的統計推斷吸引了很多統計學家。本文首先概述了這一領域參數估計方面的最新發展，然后集中討論了既含有個體效應，又有時間效應的panel數據模型的參數估計。 - Discusses the characteristic values on individual stock risk with the standard deviation , variance ( 2 ) , standard deviation coefficient ( cv ) and coefficient measurement , construct the individual on stock ' s statistics index system on investment risk . 2 . discuss the characteristic of standard deviation , variance , variance - covariance matrix to measure the investment risk of stock portfolio
第二章“證券投資風險的度量”分為三個小節： 1 、討論單個證券風險用標準差( ) 、方差( ~ 2 ) 、變差系數( cv )以及系數度量，構造了單個證券的投資風險統計指標體系； 2 、討論了用標準差和方差、方差?協方差矩陣、方差?協方差矩陣的特征值來度量組合證券的投資風險； 3 、計算了衡量證券組合系統性風險的系數值，并分析了系數的含義和預測能力的可靠性。
- variance-covariance matrixとは意味：分散共分散行列
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