3USING NUMPY
NumPy is foundational to all of the machine learning we’ll explore in this book. If you’re already comfortable with NumPy, you can skip this chapter. If you’re not, don’t be shy; consider this chapter a refresher and dive in.
A full tutorial of NumPy is beyond what we can cover here, so if you’re interested, you can look further at https://docs.scipy.org/doc/numpy/user/quickstart.html.
Why NumPy?
Python is an elegant programming language but it lacks an important data structure that’s fundamental to scientific and mathematical programming: the array. Yes, you could use a dictionary as an array, or a sizeable predefined list, but this ...
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