QuantLib
: a free/open-source library for quantitative finance
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ql
math
randomnumbers
stochasticcollocationinvcdf.hpp
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/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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Copyright (C) 2016 Klaus Spanderen
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This file is part of QuantLib, a free-software/open-source library
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for financial quantitative analysts and developers - http://quantlib.org/
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QuantLib is free software: you can redistribute it and/or modify it
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under the terms of the QuantLib license. You should have received a
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copy of the license along with this program; if not, please email
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<quantlib-dev@lists.sf.net>. The license is also available online at
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<http://quantlib.org/license.shtml>.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the license for more details.
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*/
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/*! \file stochasticcollocationinvcdf.hpp
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Stochastic collocation inverse cumulative distribution function
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*/
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#ifndef quantlib_stochastic_collation_inv_cdf_hpp
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#define quantlib_stochastic_collation_inv_cdf_hpp
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#include <
ql/math/distributions/normaldistribution.hpp
>
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#include <
ql/math/interpolations/lagrangeinterpolation.hpp
>
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#include <
ql/functional.hpp
>
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namespace
QuantLib
{
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//! Stochastic collocation inverse cumulative distribution function
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/*! References:
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L.A. Grzelak, J.A.S. Witteveen, M.Suárez-Taboada, C.W. Oosterlee,
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The Stochastic Collocation Monte Carlo Sampler: Highly efficient
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sampling from “expensive” distributions
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http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2529691
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*/
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class
StochasticCollocationInvCDF
{
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public
:
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StochasticCollocationInvCDF
(
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const
ext::function<
Real
(
Real
)>& invCDF,
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Size
lagrangeOrder,
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Real
pMax =
Null<Real>
(),
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Real
pMin =
Null<Real>
());
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Real
value
(
Real
x)
const
;
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Real
operator()
(
Real
u)
const
;
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private
:
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const
Array
x_
;
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const
Volatility
sigma_
;
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const
Array
y_
;
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const
LagrangeInterpolation
interpl_
;
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};
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}
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#endif
QuantLib::Array
1-D array used in linear algebra.
Definition:
array.hpp:52
QuantLib::LagrangeInterpolation
Definition:
lagrangeinterpolation.hpp:142
QuantLib::Null
template class providing a null value for a given type.
Definition:
null.hpp:76
QuantLib::StochasticCollocationInvCDF
Stochastic collocation inverse cumulative distribution function.
Definition:
stochasticcollocationinvcdf.hpp:42
QuantLib::StochasticCollocationInvCDF::x_
const Array x_
Definition:
stochasticcollocationinvcdf.hpp:54
QuantLib::StochasticCollocationInvCDF::sigma_
const Volatility sigma_
Definition:
stochasticcollocationinvcdf.hpp:55
QuantLib::StochasticCollocationInvCDF::interpl_
const LagrangeInterpolation interpl_
Definition:
stochasticcollocationinvcdf.hpp:57
QuantLib::StochasticCollocationInvCDF::operator()
Real operator()(Real u) const
Definition:
stochasticcollocationinvcdf.cpp:61
QuantLib::StochasticCollocationInvCDF::y_
const Array y_
Definition:
stochasticcollocationinvcdf.hpp:56
QuantLib::StochasticCollocationInvCDF::value
Real value(Real x) const
Definition:
stochasticcollocationinvcdf.cpp:58
functional.hpp
Maps function, bind and cref to either the boost or std implementation.
QuantLib::Real
QL_REAL Real
real number
Definition:
types.hpp:50
QuantLib::Volatility
Real Volatility
volatility
Definition:
types.hpp:78
QuantLib::Size
std::size_t Size
size of a container
Definition:
types.hpp:58
lagrangeinterpolation.hpp
QuantLib
Definition:
any.hpp:35
normaldistribution.hpp
normal, cumulative and inverse cumulative distributions
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