[mlpack-svn] r16179 - mlpack/trunk/src/mlpack/core/optimizers/lbfgs

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

Author: birm
Date: Tue Jan 28 14:45:14 2014
New Revision: 16179

Log:
Added ToString to LBFGS


Modified:
   mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs.hpp
   mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs_impl.hpp

Modified: mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs.hpp
==============================================================================
--- mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs.hpp	(original)
+++ mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs.hpp	Tue Jan 28 14:45:14 2014
@@ -139,6 +139,9 @@
   //! Modify the maximum line search step size.
   double& MaxStep() { return maxStep; }
 
+  // convert the obkect into a string
+  std::string ToString() const;
+
  private:
   //! Internal reference to the function we are optimizing.
   FunctionType& function;
@@ -251,3 +254,4 @@
 #include "lbfgs_impl.hpp"
 
 #endif // __MLPACK_CORE_OPTIMIZERS_LBFGS_LBFGS_HPP
+

Modified: mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs_impl.hpp
==============================================================================
--- mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs_impl.hpp	(original)
+++ mlpack/trunk/src/mlpack/core/optimizers/lbfgs/lbfgs_impl.hpp	Tue Jan 28 14:45:14 2014
@@ -419,7 +419,26 @@
   return function.Evaluate(iterate);
 }
 
+
+// convert the object to a string
+template<typename FunctionType>
+std::string L_BFGS<FunctionType>::ToString() const{
+  std::ostringstream convert;
+  convert << "L_BFGS [" << this << "]" << std::endl;
+  convert << "Memory Size: " << numBasis << std::endl;
+  convert << "Cube Size" << s.n_rows << "x" << s.n_cols << "x" << s.n_slices;
+  convert << std::endl;
+  convert << "Maximum Iterations: " << maxIterations << std::endl;
+  convert << "Armijo condition Parameter: " << armijoConstant << std::endl;
+  convert << "Wolfe Parameter: " << wolfe << std::endl;
+  convert << "Minimum Gradient: " << minGradientNorm << std::endl;
+  convert << "Minimum Step of Line Search: " << minStep << std::endl;
+  convert << "Maximum Step of Line Search: " << maxStep << std::endl;
+  return convert.str();
+}
+
 }; // namespace optimization
 }; // namespace mlpack
 
 #endif // __MLPACK_CORE_OPTIMIZERS_LBFGS_LBFGS_IMPL_HPP
+