Warren Weckesser questions

Warren Weckesser answers

• Calculating cosine distance between the rows of matrix
• Cosine similarity yields 'nan' values pt.II
• Scipy Weibull CDF calculation
• How to extract a list of elements given by their indices from a numpy array efficiently?
• Plot straight line of best fit on log-log plot
• Obtain indices corresponding to instances for each type of error in a confusion matrix in numpy
• `numpy.diff` and `scipy.fftpack.diff` giving different results when differentiating
• Getting the number of stored elements of sparse matrix - Python
• Python Numpy array conversion
• Incorrect eigenvalues SciPy sparse linalg.eigs, eigsh for non-diagonal M matrix