本文给出的半正定二次型的若干判别方法及半正定对应系数矩阵的一些相关性质。

The paper gives a number of methods for differentiating half positive definite quadratic form and some relevant properties in respect to half positive definite corresponding coefficient matrix.

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利用ICA对基因微阵列表达谱数据进行分解获得由基因模型谱和对应系数构成的线性谱模型，并在此基础上进行基因分类。

The gene linear profile model, composed of model profiles and coefficients, is obtained by ica from gene expression data, so gene classification based on ica is presented.

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在最穷的20%家庭中，有28%的儿童体重严重不足，相比之下，在最富的20%的家庭中，对应的数字只有5%——这一差距要比基尼系数更高的国家更大。

In the richest 20% of households, only 5% of children are severely underweight, compared with 28% in the poorest 20%—a wider gap than in countries which have higher Gini coefficients.

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It will typically look like this and the formula we say is F = - kx, where k is called "The force constant."

图像看上去一般就像这样,对应的式子是 F = - kx,k 叫做"弹性系数"

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