Identification Verification Code drops Lingling, VB code, the design matrix , PNG read, worth a visit.

滴玲玲验证码识别, VB代码, 字模设计,PNG读取, 值得一看.

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In solving the regression equations, collinearity in the design matrix can result in inaccurate parameter estimates.

在解回归方程时, 设计矩阵中的共线性可能产生不精确的参数估计.

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