com.imsl.stat
Class KaplanMeierECDF

java.lang.Object
  com.imsl.stat.KaplanMeierECDF

All Implemented Interfaces:

Serializable, Cloneable

public class KaplanMeierECDF
extends Object
implements Serializable, Cloneable

Computes the Kaplan-Meier reliability function estimates or the CDF based on failure data that may be multi-censored.

See Also:

Serialized Form

Field Summary

static long

serialVersionUID

Constructor Summary

KaplanMeierECDF(double[] y)
Constructor for ARMA.

Method Summary

static void	compute() Computes the empirical CDF
static double[]	getCDF() Retrieve CDF values up to, but not including the time values in x
static int	getNTimes() Retrieves the number of points in the empirical CDF
static double[]	getTimes() Retrieves the time values where the step function CDF jumps to a greater value.
static void	setCensor(int[] censor) Set flags to note right-censoring
static void	setFrequency(int[] freq) Sets the frequency for each entry in y

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

KaplanMeierECDF

public KaplanMeierECDF(double[] y)

Constructor for ARMA.

Parameters:

y - a double array containing the failure times.

Method Detail

compute

public static void compute()

Computes the empirical CDF

getCDF

public static double[] getCDF()

Retrieve CDF values up to, but not including the time values in x

Returns:

a double array of cdf values.

getNTimes

public static int getNTimes()

Retrieves the number of points in the empirical CDF

Returns:

an int containing the number of points in the empirical CDF.

getTimes

public static double[] getTimes()

Retrieves the time values where the step function CDF jumps to a greater value. this array has right-censored values of y removed.

setCensor

public static void setCensor(int[] censor)

Set flags to note right-censoring

Parameters:

censor - an int array of 0 or 1 flags to note right-censoring 0 = continue to use datum 1 = remove datum no data is right-censored if not present.

Throws:

IllegalArgumentException - is thrown if censor.length, y.length are not consistent.

setFrequency

public static void setFrequency(int[] freq)

Sets the frequency for each entry in y

Parameters:

freq - a double array containing the repeat count for each entry in y.

Throws:

IllegalArgumentException - is thrown if freq.length, y.length are not consistent.