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diff tvii/logistic_regression.py @ 2:1214c127fe43

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steps towards logistic regression
author Jeff Hammel <k0scist@gmail.com>
date Wed, 30 Aug 2017 17:05:03 -0700
parents
children b6a146f0a61b
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tvii/logistic_regression.py	Wed Aug 30 17:05:03 2017 -0700
@@ -0,0 +1,5 @@
+"""
+z = w'x + b
+a = sigmoid(z)
+L(a,y) = -(y*log(a) + (1-y)*log(1-a))
+"""