QuantLib
: a free/open-source library for quantitative finance
fully annotated source code - version 1.34
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ql
methods
finitedifferences
meshers
exponentialjump1dmesher.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) 2011 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 exponentialjump1dmesher.hpp
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\brief mesher for a exponential jump mesher with high
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mean reversion rate and low jump intensity
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*/
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#ifndef quantlib_exponential_jump_1d_mesher_hpp
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#define quantlib_exponential_jump_1d_mesher_hpp
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#include <
ql/methods/finitedifferences/meshers/fdm1dmesher.hpp
>
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#include <
ql/methods/finitedifferences/operators/fdmlinearopiterator.hpp
>
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namespace
QuantLib
{
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/*! Mesher for a exponential jump process with high
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mean reversion rate and low jump intensity
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\f[
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\begin{array}{rcl}
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dY_t &=& -\beta Y_{t-}dt + J_tdN_t \\
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\omega(J)&=&\frac{1}{\eta_u}e^{-\frac{1}{\eta_u}J}
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\end{array}
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\f]
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*/
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/*! References:
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B. Hambly, S. Howison, T. Kluge, Modelling spikes and pricing
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swing options in electricity markets,
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http://people.maths.ox.ac.uk/hambly/PDF/Papers/elec.pdf
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*/
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class
ExponentialJump1dMesher
:
public
Fdm1dMesher
{
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public
:
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ExponentialJump1dMesher
(
Size
steps,
Real
beta
,
Real
jumpIntensity,
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Real
eta,
Real
eps = 1e-3);
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// approximation. see Hambly et.al.
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Real
jumpSizeDensity
(
Real
x)
const
;
// t->\inf
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Real
jumpSizeDensity
(
Real
x,
Time
t
)
const
;
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Real
jumpSizeDistribution
(
Real
x)
const
;
// t->\inf
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Real
jumpSizeDistribution
(
Real
x,
Time
t
)
const
;
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private
:
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const
Real
beta_
,
jumpIntensity_
,
eta_
;
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};
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}
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#endif
QuantLib::ExponentialJump1dMesher
Definition:
exponentialjump1dmesher.hpp:49
QuantLib::ExponentialJump1dMesher::eta_
const Real eta_
Definition:
exponentialjump1dmesher.hpp:61
QuantLib::ExponentialJump1dMesher::beta_
const Real beta_
Definition:
exponentialjump1dmesher.hpp:61
QuantLib::ExponentialJump1dMesher::jumpSizeDensity
Real jumpSizeDensity(Real x) const
Definition:
exponentialjump1dmesher.cpp:69
QuantLib::ExponentialJump1dMesher::jumpSizeDistribution
Real jumpSizeDistribution(Real x) const
Definition:
exponentialjump1dmesher.cpp:85
QuantLib::ExponentialJump1dMesher::jumpIntensity_
const Real jumpIntensity_
Definition:
exponentialjump1dmesher.hpp:61
QuantLib::Fdm1dMesher
Definition:
fdm1dmesher.hpp:34
t
const DefaultType & t
Definition:
defaultprobabilitykey.cpp:39
fdm1dmesher.hpp
One-dimensional simple FDM mesher object working on an index.
fdmlinearopiterator.hpp
iterator for a linear fdm operator
QuantLib::Time
Real Time
continuous quantity with 1-year units
Definition:
types.hpp:62
QuantLib::Real
QL_REAL Real
real number
Definition:
types.hpp:50
QuantLib::Size
std::size_t Size
size of a container
Definition:
types.hpp:58
QuantLib
Definition:
any.hpp:35
beta
Real beta
Definition:
sabr.cpp:200
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