QuantLib: a free/open-source library for quantitative finance
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klugeextouprocess.hpp
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1/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2
3/*
4 Copyright (C) 2011 Klaus Spanderen
5
6 This file is part of QuantLib, a free-software/open-source library
7 for financial quantitative analysts and developers - http://quantlib.org/
8
9 QuantLib is free software: you can redistribute it and/or modify it
10 under the terms of the QuantLib license. You should have received a
11 copy of the license along with this program; if not, please email
12 <quantlib-dev@lists.sf.net>. The license is also available online at
13 <http://quantlib.org/license.shtml>.
14
15 This program is distributed in the hope that it will be useful, but WITHOUT
16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 FOR A PARTICULAR PURPOSE. See the license for more details.
18*/
19
20/*! \file klugeextouprocess.hpp
21 \brief joint Kluge process an d Ornstein Uhlenbeck process
22*/
23
24#ifndef quantlib_kluge_ext_ou_process_hpp
25#define quantlib_kluge_ext_ou_process_hpp
26
28
29namespace QuantLib {
30
31 class ExtOUWithJumpsProcess;
32 class ExtendedOrnsteinUhlenbeckProcess;
33
34 /*! This class describes a correlated Kluge - extended Ornstein-Uhlenbeck
35 process governed by
36 \f[
37 \begin{array}{rcl}
38 P_t &=& \exp(p_t + X_t + Y_t) \\
39 dX_t &=& -\alpha X_tdt + \sigma_x dW_t^x \\
40 dY_t &=& -\beta Y_{t-}dt + J_tdN_t \\
41 \omega(J) &=& \eta e^{-\eta J} \\
42 G_t &=& \exp(g_t + U_t) \\
43 dU_t &=& -\kappa U_tdt + \sigma_udW_t^u \\
44 \rho &=& \mathrm{corr} (dW_t^x, dW_t^u)
45 \end{array}
46 \f]
47 */
48
49 /*! References:
50 B. Hambly, S. Howison, T. Kluge, Modelling spikes and pricing
51 swing options in electricity markets,
52 http://people.maths.ox.ac.uk/hambly/PDF/Papers/elec.pdf
53 */
54
55
57 public:
59 ext::shared_ptr<ExtOUWithJumpsProcess> kluge,
60 ext::shared_ptr<ExtendedOrnsteinUhlenbeckProcess> extOU);
61
62 Size size() const override;
63 Size factors() const override;
64
65 Array initialValues() const override;
66 Array drift(Time t, const Array& x) const override;
67 Matrix diffusion(Time t, const Array& x) const override;
68 Array evolve(Time t0, const Array& x0, Time dt, const Array& dw) const override;
69
70 ext::shared_ptr<ExtOUWithJumpsProcess> getKlugeProcess() const;
71 ext::shared_ptr<ExtendedOrnsteinUhlenbeckProcess> getExtOUProcess() const;
72
73 Real rho() const;
74
75 private:
77 const ext::shared_ptr<ExtOUWithJumpsProcess> klugeProcess_;
78 const ext::shared_ptr<ExtendedOrnsteinUhlenbeckProcess> ouProcess_;
79 };
80}
81#endif
1-D array used in linear algebra.
Definition: array.hpp:52
const ext::shared_ptr< ExtendedOrnsteinUhlenbeckProcess > ouProcess_
Array drift(Time t, const Array &x) const override
returns the drift part of the equation, i.e.,
Size size() const override
returns the number of dimensions of the stochastic process
Array evolve(Time t0, const Array &x0, Time dt, const Array &dw) const override
Matrix diffusion(Time t, const Array &x) const override
returns the diffusion part of the equation, i.e.
Size factors() const override
returns the number of independent factors of the process
Array initialValues() const override
returns the initial values of the state variables
const ext::shared_ptr< ExtOUWithJumpsProcess > klugeProcess_
ext::shared_ptr< ExtOUWithJumpsProcess > getKlugeProcess() const
ext::shared_ptr< ExtendedOrnsteinUhlenbeckProcess > getExtOUProcess() const
Matrix used in linear algebra.
Definition: matrix.hpp:41
multi-dimensional stochastic process class.
const DefaultType & t
Real Time
continuous quantity with 1-year units
Definition: types.hpp:62
QL_REAL Real
real number
Definition: types.hpp:50
std::size_t Size
size of a container
Definition: types.hpp:58
Definition: any.hpp:35
stochastic processes