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82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
/*
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* Chi2Function.hpp, part of LatAnalyze 3
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*
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* Copyright (C) 2013 - 2014 Antonin Portelli
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*
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* LatAnalyze 3 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LatAnalyze 3 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LatAnalyze 3. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef Latan_Chi2Function_hpp_
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#define Latan_Chi2Function_hpp_
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#include <LatAnalyze/Global.hpp>
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#include <LatAnalyze/Function.hpp>
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#include <LatAnalyze/Model.hpp>
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BEGIN_LATAN_NAMESPACE
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/******************************************************************************
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* <Class> *
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******************************************************************************/
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// forward declaration of XYStatData
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class XYStatData;
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class Chi2Function: public DoubleFunction
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{
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private:
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struct Chi2FunctionBuffer
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{
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DVec v, x;
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DMat invVar;
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bool isInit{false};
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Vec<Index> xInd, dInd;
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};
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public:
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// constructor
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explicit Chi2Function(const XYStatData &data);
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Chi2Function(const XYStatData &data,
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const std::vector<const DoubleModel *> &modelVector);
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// destructor
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virtual ~Chi2Function(void) = default;
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// access
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virtual Index getNArg(void) const;
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Index getNDof(void) const;
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Index getNPar(void) const;
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void setModel(const DoubleModel &model, const Index j = 0);
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void setModel(const std::vector<const DoubleModel *> &modelVector);
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void requestInit(void) const;
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// function call
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using DoubleFunction::operator();
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protected:
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// function call
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virtual double operator()(const double *arg) const;
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private:
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// access
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void resizeBuffer(void) const;
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// compute variance matrix inverse
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void setVarianceBlock(const Index l1, const Index l2,
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ConstBlock<DMatBase> m) const;
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void initBuffer(void) const;
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private:
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const XYStatData &data_;
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std::shared_ptr<Chi2FunctionBuffer> buffer_;
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std::vector<const DoubleModel *> model_;
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Index nPar_{-1};
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};
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END_LATAN_NAMESPACE
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#endif // Latan_Chi2Function_hpp_
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