null characteristic 中文意思是什麼
null characteristic
解釋
零點特性- null : adj 1 無效力的，無束縛力的。2 無效的，無用的，無益的；無價值的。3 沒特徵[個性]的，沒表情的。4 〈...
- characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
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In this thesis, we study and discuss deeply data preprocessing based on rough set. first, the characteristic and shortcoming of primary algorithms about the computation of null values is analysised, and principle and target of the completation is indicated
而經典的粗集理論不能處理原始數據資料中的遺漏信息以及值域為實數的數據，需要經過數據預處理，包括數據補齊和離散化處理后才能進行知識獲取，因此如何有效地進行數據預處理具有非常重要的現實意義。 -
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
摘要長期以來，對于多維基因多態性數據的多元統計分析，如計算遺傳距離時所用的聚類分析、分析群體遺傳結構時所用的主成分分析、因子分析和典型相關分析等，一直應用為無約束條件數據而設計的經典多元線性分析方法，並沒有注意基因多態性數據的「閉合效應」所帶來的問題。 -
A characteristic for the stability of the dimensions of the null - spaces of fredholm operators
運算元零空間維數擾動不變的特徵
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