Mercurial > hg > tvii

view tvii/logistic_regression.py @ 2:1214c127fe43

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
steps towards logistic regression
author Jeff Hammel <k0scist@gmail.com>
date Wed, 30 Aug 2017 17:05:03 -0700
parents
children b6a146f0a61b
line wrap: on
line source

"""
z = w'x + b
a = sigmoid(z)
L(a,y) = -(y*log(a) + (1-y)*log(1-a))
"""