From fce4426cab9b92b4d06345e9b637d4868ddc91d1 Mon Sep 17 00:00:00 2001
From: julien Lengrand-Lambert <julien@lengrand.fr>
Date: Sun, 22 Nov 2015 10:43:17 +0100
Subject: [PATCH] Week 3

Gets sigmoid method working.
---
 W3/machine-learning-ex2/ex2/plotData.m |  13 +++++++------
 W3/machine-learning-ex2/ex2/sigmoid.m  |   3 +--
 W3/machine-learning-ex2/ex2/token.mat  | Bin 0 -> 262 bytes
 3 files changed, 8 insertions(+), 8 deletions(-)
 create mode 100644 W3/machine-learning-ex2/ex2/token.mat

diff --git a/W3/machine-learning-ex2/ex2/plotData.m b/W3/machine-learning-ex2/ex2/plotData.m
index 5df9d3f..84d8e00 100644
--- a/W3/machine-learning-ex2/ex2/plotData.m
+++ b/W3/machine-learning-ex2/ex2/plotData.m
@@ -12,13 +12,14 @@ figure; hold on;
 %               examples and 'ko' for the negative examples.
 %
 
+% Find Indices of Positive and Negative Examples
+pos = find(y==1); neg = find(y == 0);
+% Plot Examples
 
-
-
-
-
-
-
+plot(X(pos, 1), X(pos, 2), 'k+','LineWidth', 2, ...
+'MarkerSize', 7);
+plot(X(neg, 1), X(neg, 2), 'ko', 'MarkerFaceColor', 'y', ...
+'MarkerSize', 7);
 
 % =========================================================================
 
diff --git a/W3/machine-learning-ex2/ex2/sigmoid.m b/W3/machine-learning-ex2/ex2/sigmoid.m
index aeb7572..371972b 100644
--- a/W3/machine-learning-ex2/ex2/sigmoid.m
+++ b/W3/machine-learning-ex2/ex2/sigmoid.m
@@ -10,8 +10,7 @@ g = zeros(size(z));
 %               vector or scalar).
 
 
-
-
+g  = ones(size(z)) ./ (1 + exp(-z));
 
 % =============================================================
 
diff --git a/W3/machine-learning-ex2/ex2/token.mat b/W3/machine-learning-ex2/ex2/token.mat
new file mode 100644
index 0000000000000000000000000000000000000000..164fc2f9327481218ea958a69ae0fa9b612e2a82
GIT binary patch
literal 262
zcmeZu4DoSvQZUssQ1EpO(M`+DN!3vZ$Vn_o%P-2cQV4Jk_w+L}(NS<NN=+<DO;O0t
zvr-5y%~SBpFH<lwQZO{IGBL6;HB~S&Ff>&l5-`93qo*%FkZlXZ6>}aZCnRt%B$+8Z
zV@MKX<49=zB-t1t;njR3s94yzxM2%Jh>f<oss3IKL;a(QvMP(G&zaACji2G&Z!Ue1
vA(n7MKA;=I05rtw)8^pM3z8JxL<vmIlAAUC-OKlBLa$!V=3$sxz`+avQ>IEd

literal 0
HcmV?d00001