Maple Professional
Maple Academic
Maple Student Edition
Maple Personal Edition
Maple Player
Maple Player for iPad
MapleSim Professional
MapleSim Academic
Maple T.A. - Testing & Assessment
Maple T.A. MAA Placement Test Suite
Möbius - Online Courseware
Machine Design / Industrial Automation
Aerospace
Vehicle Engineering
Robotics
Power Industries
System Simulation and Analysis
Model development for HIL
Plant Modeling for Control Design
Robotics/Motion Control/Mechatronics
Other Application Areas
Mathematics Education
Engineering Education
High Schools & Two-Year Colleges
Testing & Assessment
Students
Financial Modeling
Operations Research
High Performance Computing
Physics
Live Webinars
Recorded Webinars
Upcoming Events
MaplePrimes
Maplesoft Blog
Maplesoft Membership
Maple Ambassador Program
MapleCloud
Technical Whitepapers
E-Mail Newsletters
Maple Books
Math Matters
Application Center
MapleSim Model Gallery
User Case Studies
Exploring Engineering Fundamentals
Teaching Concepts with Maple
Maplesoft Welcome Center
Teacher Resource Center
Student Help Center
Finance[Drift] - compute the drift component of an Ito process
Calling Sequence
Drift(X)
Drift(f, mu, sigma, X, t)
Parameters
X
-
stochastic process, expression involving stochastic variables
f
algebraic expression involving stochastic variables
mu
algebraic expression, drift term of the original process
sigma
algebraic expression, diffusion term of the original process
name, stochastic variable
t
name, time variable
Description
The Drift(X) calling sequence computes the drift term of an Ito process X. That is, given a process governed by the stochastic differential equation (SDE)
the Drift command will return .
The parameter X can be either a stochastic process or an expression involving stochastic variables. In the first case a Maple procedure is applied for computing the drift term. This procedure will accept two parameters: the value of the state variable and the time, and return the corresponding value of the drift. In the second case, Ito's lemma will be applied to calculate the drift term of X. Note that the Drift command will perform formal computations; the validity of these computations for a given function f will not be verified.
Compatibility
The Finance[Drift] command was introduced in Maple 15.
For more information on Maple 15 changes, see Updates in Maple 15.
Examples
The Drift command knows how to compute the drift for all supported Ito-type processes.
You can also use expressions involving stochastic variables.
The following example deals with two correlated one-dimensional Wiener processes.
See Also
Finance[BrownianMotion], Finance[CEVProcess], Finance[DeterministicProcess], Finance[Diffusion], Finance[GaussianShortRateProcess], Finance[GeometricBrownianMotion], Finance[HestonProcess], Finance[OrnsteinUhlenbeckProcess], Finance[SquareRootDiffusion], Finance[StochasticProcesses], Finance[WienerProcess]
References
Glasserman, P., Monte Carlo Methods in Financial Engineering. New York: Springer-Verlag, 2004.
Hull, J., Options, Futures, and Other Derivatives, 5th. edition. Upper Saddle River, New Jersey: Prentice Hall, 2003.
Kloeden, P., and Platen, E., Numerical Solution of Stochastic Differential Equations, New York: Springer-Verlag, 1999.
Download Help Document