第一主成分 meaning in English
first principal component
Examples
- First principal component
第一主成分 - Weight accounted for the greatest proportion of age - adjusted bmd variation ( e . g . , at femoral neck , r2 = 0 . 17 in males ) among four variables : weight , height , bmi and a principal component formed from weight and height
身高、体重、体重指数和从身高和体重的主成分分析产生的第一主成分是与骨密度有关的变量，在这四个变量中，体重是解释骨密度变异(如：在男性股骨颈， r ~ 2 = 0 . 17 )最高的变量。 - The paper analyzes systematically the textile comprehensive economic power in tianjin . it applies muti - element statistics to comprehensive settlement on datas to design a stepshaped index system , selects the principal component analysis to compare and analyze the data of 31 provines and cities of china in 2000
应用多元统计分析对数据的综合处理方法确定了指标体系，采用主成分分析法对全国31个省市的2000年数据进行比较分析，提出了用第一主成分作为度量一个地区综合经济实力的观点。 - The result indicated that , the output value per labour force , the output value of unit field area , the output value per person are the major indexes of the first principal components , the balance index of n , the output value per labour force and the pesticide quantity per unit field area are the major quotas of the second principal components , the balance index of p , the balance index of k and the output value per person are the major indexes of the third principal components
结果表明：劳均产值、单位耕地产值、人均产值是决定第一主成分的主要指标；氮平衡指数、劳均产值、单位耕地施用农药量是决定第二主成分的主要指标；磷平衡指数、钾平衡指数、人均产值是决定第三主成分的主要指标。 - Second , the coordinate figure of the first and second principal components is of great audio - visual sicnifcance . it can clearly show the distinguishing feature and similarity . this is a very useful analyzing means . third , the factor analysis can be used completely to analyzing the aligning datas in time , its calculating results reflect totally the developmental trend and changing reasons of the textile industry in tianjin
分析结果表明： ( 1 )在适当选取指标后，使用主成分分析法，可以将第一主成分作为一个地区综合经济实力的度量，其公式具有稳定的系数且结果可靠可信： ( 2 )主成分坐标图(如图3 )具有很强的直观意义，各省市的特点及相似性都非常清楚地展示出来，这是一个很有用的分析工具； ( 3 )因子分析法完全可以作为时间序列数据的实证分析，其计算结果客观全面地反映出天津纺织工业的发展趋势及其变动原因。