The resulting factors are much sparser than if column permutations are not used. Contains all experiments with different types of matrices and operations. Contribute to the GeeksforGeeks community and help create better learning resources for all. The way you specify thresh depends on how many outputs are specified in the call to lu : For three outputs or less , thresh must be a scalar, and the default value is 1. Typically, the row-scaling leads to a sparser and more stable factorization.
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