pyodide/benchmark/benchmarks/log_likelihood.py

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2018-04-05 22:07:33 +00:00
#setup: import numpy as np ; N = 100000 ; a = np.random.random(N); b = 0.1; c =1.1
#run: log_likelihood(a, b, c)
#from: http://arogozhnikov.github.io/2015/09/08/SpeedBenchmarks.html
import numpy
#pythran export log_likelihood(float64[], float64, float64)
def log_likelihood(data, mean, sigma):
s = (data - mean) ** 2 / (2 * (sigma ** 2))
pdfs = numpy.exp(- s)
pdfs /= numpy.sqrt(2 * numpy.pi) * sigma
return numpy.log(pdfs).sum()