Alpha:一般被认为是投资组合的超额收益，也既管理人的能力；Beta:市场风险，最初主要指股票市场的系统性...
微生物多样性包括Alpha多样性、Beta多样性和Gamma多样性,三者都来源于生态学。Alpha多样性是指特定生境内的物种多样性,Beta多样性是指不同生境间的群落多样性,主要区别于空间尺度。Alpha多样性分析主要使用优势度指数(Dominance_D)、辛普森指数(Simpson_1-D)、香农指数(Shannon_H)、均匀度指数(Evenness)、样本丰富度...
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Alpha是用于确定相对于最小风险量的最高可能收益的指数,并且根据公式,通过从市场收益中减去收益的无风险利率并将结果乘以以beta表示的投资组合的系统风险,并进一步从投资组合的预期收益率中减去所得结果以及无风险收益率。 可以首先通过基于无风险收益率,投资组合的贝塔值和市场风险溢价计算投资组合的预期收益率,然后从实...
The formula for sin. (#alpha# +#beta#)We have added the altitude CG; the additional annotation follows from the definitions of the sine and cisine functions.Edsger W.DijkstraNATOMathematical methods in program development: NATO(North Atlantic Treaty Organisation) advanced study institute on ...
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A more comprehensive way to calculate alpha is through the capital assets pricing model (CAPM), a model that calculates the expected return of a security given its risk. This formula uses beta and the risk-free rate — a rate of return that an investor can expect assuming zero risk (e.g...
An Analysis of the Full Alpha-Beta Pruning Algorithm An analysis of the alpha-beta pruning algorithm is presented which takes into account both shallow and deep cut-offs. A formula is first developed to measure the average number of terminal nodes examined by the algorithm in a uniform fre.....
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Calculation Method:It goes without saying that each has a different way of being calculated. Alpha is formulated using thecapital asset pricing model (CAPM)formula which considers an investment's actual return, risk-free rate, and beta. Beta, on the other hand, is calculated through regression ...