>>># The standard way to import NumPy:>>>import numpy as np
>>># Create a 2-D array, set every second element in>>># some rows and find max per row:>>> x = np.arange(15, dtype=np.int64).reshape(3, 5)
>>> x[1:, ::2] =-99>>> x
array([[ 0, 1, 2, 3, 4],
[-99, 6, -99, 8, -99],
[-99, 11, -99, 13, -99]])
array([ 4, 8, 13])
>>># Generate normally distributed random numbers:>>> rng = np.random.default_rng()
>>> samples = rng.normal(size=2500)
Nearly every scientist working in Python draws on the power of NumPy.
NumPy brings the computational power of languages like C and Fortran to Python, a language much easier to learn and use. With this power comes simplicity: a solution in NumPy is often clear and elegant.
Statistical techniques called ensemble methods such as binning, bagging, stacking, and boosting are among the ML algorithms implemented by tools such as XGBoost, LightGBM, and CatBoost — one of the fastest inference engines. Yellowbrick and Eli5 offer machine learning visualizations.
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