[mlpack-svn] r17274 - mlpack/trunk/src/mlpack/core/metrics

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

Author: rcurtin
Date: Fri Oct 31 16:59:56 2014
New Revision: 17274

Log:
Make the Mahalanobis distance a true metric by default.


Modified:
   mlpack/trunk/src/mlpack/core/metrics/mahalanobis_distance.hpp

Modified: mlpack/trunk/src/mlpack/core/metrics/mahalanobis_distance.hpp
==============================================================================
--- mlpack/trunk/src/mlpack/core/metrics/mahalanobis_distance.hpp	(original)
+++ mlpack/trunk/src/mlpack/core/metrics/mahalanobis_distance.hpp	Fri Oct 31 16:59:56 2014
@@ -40,9 +40,11 @@
  * which is faster to evaluate.
  *
  * @tparam TakeRoot If true, takes the root of the output.  It is slightly
- *   faster to leave this at the default of false.
+ *   faster to leave this at the default of false, but this means the metric may
+ *   not satisfy the triangle inequality and may not be usable for methods that
+ *   expect a true metric.
  */
-template<bool TakeRoot = false>
+template<bool TakeRoot = true>
 class MahalanobisDistance
 {
  public: