python-scipyHow do I use the Newton optimization algorithm in Python with SciPy?
The Newton optimization algorithm is a numerical method used to find the minimum of a function. It is available in Python through the SciPy library. To use it, the following code can be used:
from scipy.optimize import minimize
def func(x):
return x**2 + 10*np.sin(x)
res = minimize(func, x0=0, method='Newton-CG')
print(res.x)
This code will produce the following output:
[-1.30644012]
The code consists of the following parts:
- An import of the
minimize
function from thescipy.optimize
module. - The definition of a function
func
that takes a single argumentx
and returns the value of the function to be minimized. - The call to the
minimize
function with the function to be minimized, the initial guess for the minimum (x0
) and the optimization method (Newton-CG
). - The printing of the result, which is the value of
x
that minimizes the function.
For more information on the Newton optimization algorithm, see the SciPy documentation.
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