# HG changeset patch
# User Jeff Hammel <k0scist@gmail.com>
# Date 1504137903 25200
# Node ID 1214c127fe43415e1d6a67f9fd5f5297923a1ccc
# Parent  92a402736bcc4cabc10089451006609cb6e997f5
steps towards logistic regression

diff -r 92a402736bcc -r 1214c127fe43 tvii/dot.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tvii/dot.py	Wed Aug 30 17:05:03 2017 -0700
@@ -0,0 +1,8 @@
+"""
+dot product
+"""
+
+def dot(w, x):
+    """inner dot product"""
+    
+    raise NotImplementedError('TODO')
diff -r 92a402736bcc -r 1214c127fe43 tvii/logistic_regression.py
--- /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))
+"""