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/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
Copyright (C) 2007 François du Vignaud
Copyright (C) 2007 Giorgio Facchinetti
Copyright (C) 2013 Peter Caspers
This file is part of QuantLib, a free-software/open-source library
for financial quantitative analysts and developers - http://quantlib.org/
QuantLib is free software: you can redistribute it and/or modify it
under the terms of the QuantLib license. You should have received a
copy of the license along with this program; if not, please email
<quantlib-dev@lists.sf.net>. The license is also available online at
<https://www.quantlib.org/license.shtml>.
This program 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 license for more details.
*/
/*! \file projection.hpp
\brief Parameter projection
*/
#ifndef quantlib_math_projection_h
#define quantlib_math_projection_h
#include <ql/math/array.hpp>
namespace QuantLib {
class Projection {
public:
Projection(const Array& parameterValues,
std::vector<bool> fixParameters = std::vector<bool>());
//! returns the subset of free parameters corresponding
// to set of parameters
virtual Array project(const Array ¶meters) const;
//! returns whole set of parameters corresponding to the set
// of projected parameters
virtual Array include(const Array &projectedParameters) const;
virtual ~Projection() = default;
protected:
void mapFreeParameters(const Array ¶meterValues) const;
Size numberOfFreeParameters_ = 0;
const Array fixedParameters_;
mutable Array actualParameters_;
std::vector<bool> fixParameters_;
};
}
#endif
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