SPCA arithmetic has smaller number of spectral principal components and greater variance contribution than PCA by choosing proper kernel functions and parameters. 當選取合適的核函數和參數時(shí)，譜主成分的個(gè)數比主成分的個(gè)數要小且累積方差貢獻率要大。
A model about valuing the contribution rate of economy growth was built, based on three kinds of datum. 我們基于三類(lèi)經(jīng)濟數據，建立了測算人力資本對經(jīng)濟增長(cháng)貢獻率的模型。
