# principal factor method

- 主因子法

*English-Chinese computer dictionary (英汉计算机词汇大词典).
2013.*

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**Factor analysis**— is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved, uncorrelated variables called factors. In other words, it is possible, for example, that variations in … Wikipedia**Principal components analysis**— Principal component analysis (PCA) is a vector space transform often used to reduce multidimensional data sets to lower dimensions for analysis. Depending on the field of application, it is also named the discrete Karhunen Loève transform (KLT),… … Wikipedia**Principal component analysis**— PCA of a multivariate Gaussian distribution centered at (1,3) with a standard deviation of 3 in roughly the (0.878, 0.478) direction and of 1 in the orthogonal direction. The vectors shown are the eigenvectors of the covariance matrix scaled by… … Wikipedia**Method of moments (statistics)**— See method of moments (probability theory) for an account of a technique for proving convergence in distribution. In statistics, the method of moments is a method of estimation of population parameters such as mean, variance, median, etc. (which… … Wikipedia**factor analysis**— A family of statistical techniques for exploring data, generally used to simplify the procedures of analysis, mainly by examining the internal structure of a set of variables in order to identify any underlying constructs. The most common version … Dictionary of sociology**General intelligence factor**— The general intelligence factor (abbreviated g ) is a controversial construct used in the field of psychology ( see also psychometrics ) to quantify what is common to the scores of all intelligence tests. Charles Spearman, early psychometrician,… … Wikipedia**level factor amortization**— Perhaps the best method of accounting for MBS premiums and discounts is the change in factor or level factor amortization method. Under the change in factor method, the amount of monthly premium amortization or discount accretion is calculated to … Financial and business terms**Scientific method**— … Wikipedia**Power factor**— For other uses, see Power factor (pistol). The power factor of an AC electric power system is defined as the ratio of the real power flowing to the load over the apparent power in the circuit,[1][2] and is a dimensionless number between 0 and 1… … Wikipedia**Pool factor**— In finance, a pool factor is a number expressed as a factor of one that is used to indicate the remaining principal balance of a note. Pool factors are only used to describe specific classes of securities, namely pooled ABSs and MBSs whose… … Wikipedia**Graeffe's method**— In mathematics, Graeffe s method or Dandelin–Graeffe method is an algorithm for finding all of the roots of a polynomial. It was developed independently by Germinal Pierre Dandelin in 1826 and Karl Heinrich Gräffe in 1837. Lobachevsky in 1834… … Wikipedia