From 1f3bea0684b96b86f37c3be3324deff2b4c23c7d Mon Sep 17 00:00:00 2001
From: julien Lengrand-Lambert <julien@lengrand.fr>
Date: Thu, 24 Dec 2015 14:16:26 +0100
Subject: [PATCH] Answers last question of the assignment about PCA

---
 machine-learning-ex7/ex7/recoverData.m |   3 +++
 machine-learning-ex7/ex7/token.mat     | Bin 262 -> 262 bytes
 2 files changed, 3 insertions(+)

diff --git a/machine-learning-ex7/ex7/recoverData.m b/machine-learning-ex7/ex7/recoverData.m
index da277f5..1ec269c 100644
--- a/machine-learning-ex7/ex7/recoverData.m
+++ b/machine-learning-ex7/ex7/recoverData.m
@@ -21,6 +21,9 @@ X_rec = zeros(size(Z, 1), size(U, 1));
 %               Notice that U(j, 1:K) is a row vector.
 %               
 
+U_reduce = U(:, 1:K);
+
+X_rec = Z * U_reduce';
 
 
 % =============================================================
diff --git a/machine-learning-ex7/ex7/token.mat b/machine-learning-ex7/ex7/token.mat
index 73b4b9093069e2cfa149d795e6653af719a25c41..04b7146b08567f485cd3988b11a41f650d3431f5 100644
GIT binary patch
delta 25
gcmZo;YGaz<%xPw2V6I?fU}!oqP<dhk>%@{t095}6J^%m!

delta 25
gcmZo;YGaz<%xPd{V5VSXU}!oqP<dhk>%@{t091qrHvj+t