null correlation中文什么意思

null: adj. 1.無效力的，無束縛力的。 2.無效的，無用的 ...
correlation: n. 相互關(guān)系，相關(guān)(性)；對(duì)比；交互作用；【數(shù)學(xué)】對(duì)射 ...
chayes null correlation: 查伊斯零相關(guān)
not null: 不能為空; 不為空
null: adj. 1.無效力的，無束縛力的。 2.無效的，無用的，無益的；無價(jià)值的。 3.沒特征[個(gè)性]的，沒表情的。 4.〔罕用語〕不存在的，沒有的；零(位)的；空的。 n. 【數(shù)學(xué)】零，零位；空；【無線電】零訊號(hào)，微弱訊號(hào)。 a null indicator 零示器；零位指示器。 the null method 衡消法。 null and void 【律】無效；失效(This check is null and void. 本支票無效)。 vt. 使無效。

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The distribution and structure of the allelic polymorphism data are analyzed and it is pointed out that the distribution of allelic polymorphism data reveals the characteristic of closed data ( also named as compositional data or data of constant sum ) it is interpreted that the correlation structure of the allelic polymorphism data contains null correlations introduced by " closure " and the statistical distribution of the data is not normal because of its constant row sum , which resulted in great difficulties in analyzing the data with traditional multiple linear statistical methods such as principal component analysis , factor analysis , cluster analysis and canonical correlation analysis
摘要長(zhǎng)期以來，對(duì)于多維基因多態(tài)性數(shù)據(jù)的多元統(tǒng)計(jì)分析，如計(jì)算遺傳距離時(shí)所用的聚類分析、分析群體遺傳結(jié)構(gòu)時(shí)所用的主成分分析、因子分析和典型相關(guān)分析等，一直應(yīng)用為無約束條件數(shù)據(jù)而設(shè)計(jì)的經(jīng)典多元線性分析方法，并沒有注意基因多態(tài)性數(shù)據(jù)的“閉合效應(yīng)”所帶來的問題。

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