ds.funnel.traffic.component.timedistribution

Class NormalTimeDistribution

java.lang.Object

ds.funnel.traffic.component.timedistribution.NormalTimeDistribution

All Implemented Interfaces:

PacketTimeDistribution

public class NormalTimeDistribution
extends java.lang.Object
implements PacketTimeDistribution

TODO: this documentation This class probably doesn't work overly well right now; it was experimental and I left off halfway through to work on other things. No guarantees that it actually generates a normal distribution...

Author:

Kira Lindburg

Constructor Summary

Constructors

Constructor and Description
NormalTimeDistribution() Creates a new NormalTimeDistribution with a mean of 0.0 and a standard deviation of 1.0 (a standard normal distribution).
NormalTimeDistribution(double mean) Creates a new NormalTimeDistribution with the specified mean and a standard deviation of 1.0.
NormalTimeDistribution(double mean, double standardDeviation) Creates a new NormalTimeDistribution with the specified mean and standard deviation.

Method Summary

Modifier and Type	Method and Description
double	getMean()
double	getStandardDeviation()
int	getType()
int	nextInterval()
int[]	prediction(int size) Generates an array containing predicted packet transmission times, in terms of number of ms from this instant.
void	setMean(double newMean) Sets the mean value for inter-arrival times generated by this normal time distribution to the specified value.
void	setStandardDeviation(double newStandardDeviation) Sets the standard deviation for inter-arrival times generated by this normal time distribution to the specified value.

Methods inherited from class java.lang.Object

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

Constructor Detail

NormalTimeDistribution

public NormalTimeDistribution()

Creates a new NormalTimeDistribution with a mean of 0.0 and a standard deviation of 1.0 (a standard normal distribution).

NormalTimeDistribution

public NormalTimeDistribution(double mean)

Creates a new NormalTimeDistribution with the specified mean and a standard deviation of 1.0.

NormalTimeDistribution

public NormalTimeDistribution(double mean,
                              double standardDeviation)

Creates a new NormalTimeDistribution with the specified mean and standard deviation.

Method Detail

getMean

public double getMean()

Returns:

the current mean value for inter-arrival times (in ms) for packets sent following this normal time distribution

setMean

public void setMean(double newMean)

Sets the mean value for inter-arrival times generated by this normal time distribution to the specified value.

getStandardDeviation

public double getStandardDeviation()

Returns:

the current standard deviation for inter-arrival times (in ms) for packets sent following this normal time distribution

setStandardDeviation

public void setStandardDeviation(double newStandardDeviation)

Sets the standard deviation for inter-arrival times generated by this normal time distribution to the specified value.

getType

public int getType()

Specified by:

getType in interface PacketTimeDistribution

Returns:

an integer id number specifying the type of distribution. This should be a unique identifier for the type of time distribution generated by a given PacketTimeDistribution.

nextInterval

public int nextInterval()

Specified by:

nextInterval in interface PacketTimeDistribution

Returns:

an interval, in ms, to wait before the next packet should be sent following this distribution

prediction

public int[] prediction(int size)

Description copied from interface: PacketTimeDistribution

Generates an array containing predicted packet transmission times, in terms of number of ms from this instant.

Specified by:

prediction in interface PacketTimeDistribution

Parameters:

size - the number of predictions contained in the returned array

Returns:

an array of the specified size, containing predicted packet transmission times in numbers of ms after this method was called