GaussianVectorRV.h

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//-----------------------------------------------------------------------bl-
//--------------------------------------------------------------------------
//
// QUESO - a library to support the Quantification of Uncertainty
// for Estimation, Simulation and Optimization
//
// Copyright (C) 2008,2009,2010,2011,2012,2013 The PECOS Development Team
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the Version 2.1 GNU Lesser General
// Public License as published by the Free Software Foundation.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc. 51 Franklin Street, Fifth Floor,
// Boston, MA  02110-1301  USA
//
//-----------------------------------------------------------------------el-

#ifndef UQ_GAUSSIAN_VECTOR_RV_H
#define UQ_GAUSSIAN_VECTOR_RV_H

#include <queso/VectorRV.h>
#include <queso/VectorSpace.h>
#include <queso/JointPdf.h>
#include <queso/VectorRealizer.h>
#include <queso/VectorCdf.h>
#include <queso/VectorMdf.h>
#include <queso/SequenceOfVectors.h>
#include <queso/InfoTheory.h>
#include <gsl/gsl_sf_psi.h> // todo: take specificity of gsl_, i.e., make it general (gsl or boost or etc)

namespace QUESO {

//*****************************************************
// Gaussian class [RV-03]
//*****************************************************

template<class V, class M>
class GaussianVectorRV : public BaseVectorRV<V,M> {
public:


  GaussianVectorRV(const char*                  prefix,
                          const VectorSet<V,M>& imageSet,
                          const V&                     lawExpVector,
                          const V&                     lawVarVector);
  

  GaussianVectorRV(const char*                  prefix,
                          const VectorSet<V,M>& imageSet,
                          const V&                     lawExpVector,
                          const M&                     lawCovMatrix);
  
  virtual ~GaussianVectorRV();


  void updateLawExpVector(const V& newLawExpVector);
  

  void updateLawCovMatrix(const M& newLawCovMatrix);
  


  void print(std::ostream& os) const;
  
private:
  using BaseVectorRV<V,M>::m_env;
  using BaseVectorRV<V,M>::m_prefix;
  using BaseVectorRV<V,M>::m_imageSet;
  using BaseVectorRV<V,M>::m_pdf;
  using BaseVectorRV<V,M>::m_realizer;
  using BaseVectorRV<V,M>::m_subCdf;
  using BaseVectorRV<V,M>::m_unifiedCdf;
  using BaseVectorRV<V,M>::m_mdf;
};

//---------------------------------------------------
// Method declared outside class definition ---------
//---------------------------------------------------
template<class V, class M>
void
ComputeConditionalGaussianVectorRV(
  const V& muVec1,
  const V& muVec2,
  const M& sigmaMat11,
  const M& sigmaMat12,
  const M& sigmaMat21,
  const M& sigmaMat22,
  const V& sampleVec2,
        V& muVec1_cond_on_2,
        M& sigmaMat11_cond_on_2);

}  // End namespace QUESO

#endif // UQ_GAUSSIAN_VECTOR_RV_H