Performance Improvement and Robustness#4
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Added performance improvements for the magnitude. This [post](https://stackoverflow.com/a/12712725) says: %timeit np.apply_along_axis(np.linalg.norm, 1, vectors) # Output: 100 loops, best of 3: 2.39 ms per loop %timeit np.sqrt((vectors ** 2).sum(-1))[..., np.newaxis] # Output: 10000 loops, best of 3: 13.8 us per loop Normalize method now won't fail, if the input has no length.
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Added performance improvements for the magnitude.
This post says:
Normalize method now won't fail, if the input has no length.