com.numericalmethod.suanshu.stats.stochasticprocess.univariate.sde

Class Euler

java.lang.Object

com.numericalmethod.suanshu.stats.stochasticprocess.univariate.sde.Euler

All Implemented Interfaces:

DiscretizedSDE, java.io.Serializable

public class Euler
extends java.lang.Object
implements DiscretizedSDE

The Euler scheme is the first order approximation of an SDE.

 dXt = μ * dt + σ * sqrt(dt) * Zt;
 

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
SDE	sde the continuous-time univariate SDE

Constructor Summary

Constructors

Constructor and Description
Euler(SDE sde) Discretize a univariate SDE using the Euler scheme.

Method Summary

Modifier and Type	Method and Description
double	dXt(Ft ft) This is the SDE specification of the stochastic process.
Ft	getNewFt() Get an empty filtration for the process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

sde

public final SDE sde

the continuous-time univariate SDE

Constructor Detail

Euler

public Euler(SDE sde)

Discretize a univariate SDE using the Euler scheme.

Parameters:

sde - continuous-time SDE

Method Detail

dXt

public double dXt(Ft ft)

This is the SDE specification of the stochastic process.

dXt = μ * dt + σ * sqrt(dt) * Zt;

Specified by:

dXt in interface DiscretizedSDE

Parameters:

ft - filtration

Returns:

the increment of the process in dt

getNewFt

public Ft getNewFt()

Description copied from interface: DiscretizedSDE

Get an empty filtration for the process.

Specified by:

getNewFt in interface DiscretizedSDE

Returns:

an empty filtration