[mlpack-svn] r10284 - mlpack/trunk/src/mlpack/tests

[fastlab-svn at coffeetalk-1.cc.gatech.edu]

Author: rcurtin
Date: 2011-11-15 14:22:15 -0500 (Tue, 15 Nov 2011)
New Revision: 10284

Modified:
   mlpack/trunk/src/mlpack/tests/hmm_test.cpp
Log:
Use exact tolerance for probabilities, because it's harder to estimate smaller
numbers.


Modified: mlpack/trunk/src/mlpack/tests/hmm_test.cpp
===================================================================
--- mlpack/trunk/src/mlpack/tests/hmm_test.cpp	2011-11-15 19:06:29 UTC (rev 10283)
+++ mlpack/trunk/src/mlpack/tests/hmm_test.cpp	2011-11-15 19:22:15 UTC (rev 10284)
@@ -431,7 +431,6 @@
  */
 BOOST_AUTO_TEST_CASE(DiscreteHMMGenerateTest)
 {
-  srand(time(NULL));
   // 6 emissions, 4 states.  Random transition and emission probability.
   arma::mat transition(4, 4);
   arma::mat emission(6, 4);
@@ -466,16 +465,16 @@
   HMM<int> hmm2(4, 6);
   hmm2.Train(sequences, states);
 
-  // Check that training gives the same result.  8% tolerance.
+  // Check that training gives the same result.  Exact tolerance of 0.005.
   for (size_t row = 0; row < 4; row++)
     for (size_t col = 0; col < 4; col++)
-      BOOST_REQUIRE_CLOSE(hmm.Transition()(row, col),
-          hmm2.Transition()(row, col), 8.0);
+      BOOST_REQUIRE_SMALL(hmm.Transition()(row, col) -
+          hmm2.Transition()(row, col), 0.005);
 
   for (size_t row = 0; row < 6; row++)
     for (size_t col = 0; col < 4; col++)
-      BOOST_REQUIRE_CLOSE(hmm.Emission()(row, col), hmm2.Emission()(row, col),
-          8.0);
+      BOOST_REQUIRE_SMALL(hmm.Emission()(row, col) - hmm2.Emission()(row, col),
+          0.005);
 }
 
 BOOST_AUTO_TEST_CASE(DiscreteHMMLogLikelihoodTest)