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changeset 33:e2dd9503098f

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finalize logistic regression notes
author Jeff Hammel <k0scist@gmail.com>
date Mon, 04 Sep 2017 13:29:11 -0700
parents 0f29b02f4806
children 018c70393353
files links.txt tvii/logistic_regression.py
diffstat 2 files changed, 3 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/links.txt	Mon Sep 04 13:20:25 2017 -0700
+++ b/links.txt	Mon Sep 04 13:29:11 2017 -0700
@@ -1,1 +1,2 @@
 https://s3.amazonaws.com/MLMastery/ml_performance_improvement_cheatsheet.pdf?__s=2gnd4eijcmfwyncxqmmz
+http://www.wildml.com/2015/09/implementing-a-neural-network-from-scratch/
--- a/tvii/logistic_regression.py	Mon Sep 04 13:20:25 2017 -0700
+++ b/tvii/logistic_regression.py	Mon Sep 04 13:29:11 2017 -0700
@@ -185,8 +185,8 @@
     """
 
     # initialize parameters with zeros
-    raise NotImplementedError('TODO') # -> record TODO items
-    w, b = initialize_with_zeros(X_train.shape[0])
+    w = np.zeros((X_train.shape[0], 1))
+    b = 0
 
     # Gradient descent
     parameters, grads, costs = optimize(w, b, X_train, Y_train, num_iterations, learning_rate, print_cost=print_cost)