From 4e0b46a727f6ea727b9e7920150609c58ce65fce Mon Sep 17 00:00:00 2001
From: Samuel Fadel <samuelfadel@gmail.com>
Date: Sat, 30 May 2015 02:00:08 -0300
Subject: Added tSNE. Code improvements.

---
 lamp.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'lamp.cpp')

diff --git a/lamp.cpp b/lamp.cpp
index 90be140..b7a1027 100644
--- a/lamp.cpp
+++ b/lamp.cpp
@@ -2,6 +2,8 @@
 
 #include <algorithm>
 
+static const double EPSILON = 1e-3;
+
 arma::mat mp::lamp(const arma::mat &X, const arma::uvec &sampleIndices, const arma::mat &Ys)
 {
     arma::mat projection(X.n_rows, 2);
@@ -22,7 +24,7 @@ void mp::lamp(const arma::mat &X, const arma::uvec &sampleIndices, const arma::m
         arma::rowvec alphas(sampleSize);
         for (arma::uword j = 0; j < sampleSize; j++) {
             double dist = arma::accu(arma::square(Xs.row(j) - point));
-            alphas[j] = 1. / std::max(dist, mp::EPSILON);
+            alphas[j] = 1. / std::max(dist, EPSILON);
         }
 
         double alphas_sum = arma::accu(alphas);
-- 
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