在做一个含有4个变量的VAR模型时,出现near singular matrix,该怎么解决啊?如果去掉一个变量却能正常运行
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Singular Matrix(Noninvertible Matrix): A square matrix which does not have an inverse. A matrix is singular if and only if its determinant is zero.
Solution can be found at http://mathworld.wolfram.com/LUDecomposition.html
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