On the basis of this the factors are weighted by analysis of grey incidence.
在此基础上，用灰色关联度分析确定了各因子的权重；
Based on the analysis of grey incidence, which is an important part of grey system theory, this paper assesses indoor air quality by the abundant information provided by grey incidence matrix.
利用灰色系统理论的灰色关联分析方法，根据灰色关联矩阵提供的丰富信息对室内空气品质进行综合评价。
Methods of principal component analysis, grey incidence analysis were employed.
研究方法：主成分分析法、灰关联分析。
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