percusse questions

percusse answers

• Random positive semi-definite matrix with given eigenvalues and eigenvectors
• Spyder IDE automatic indentation
• Matlab adding rows and columns elegantly
• numpy.linalg.inv returns inverse for a singular matrix
• More efficient way to invert a matrix knowing it is symmetric and positive semi-definite
• compute determinant from LU decomposition in lapack
• Mean Squared error in Python
• Performance between C-contiguous and Fortran-contiguous array operations
• Comparing Numpy and Matlab array summation speed
• Deterministic python script behaves in non-deterministic way