logistic regression for a sparse matrix

2013 3 4
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Hello, I am using the function mnrfit to calculate the logistic regression for a very sparse binary matrix A(n,p). A being very sparse, it is a singular matrix, so the mnrfit output is a vector with each element NaN. How can I calculate the logistic regression for a sparse matrix?
Thank you in advance. Silvia

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Tiziano
Tiziano
2013-3-4

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