org.wso2.siddhi.extension.timeseries.extrema.util

Class ExtremaCalculator

java.lang.Object

org.wso2.siddhi.extension.timeseries.extrema.util.ExtremaCalculator

public class ExtremaCalculator
extends Object

Constructor Summary

Constructors

Constructor and Description
ExtremaCalculator()
ExtremaCalculator(double Q, double R)

Method Summary

Modifier and Type	Method and Description
Integer	findMax(Queue<Double> input, int bandwidth) Finds maximum Local value of a Queue uses rule based approach
Integer	findMax(Queue<Double> input, int leftBandwidth, int rightBandwidth) This is used to have two different bandwidths when finding maximum.
Integer	findMin(Queue<Double> input, int bandwidth) Finds minimum Local value of a Queue uses rule based approach
Integer	findMin(Queue<Double> input, int leftBandwidth, int rightBandwidth) This is used to have two different bandwidths when finding minimum.
Queue<Double>	kalmanFilter(Queue<Double> input)
Queue<Double>	smooth(Queue<Double> input, double bw)
double	update(double measurement)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtremaCalculator

public ExtremaCalculator(double Q,
                         double R)

ExtremaCalculator

public ExtremaCalculator()

Method Detail

smooth

public Queue<Double> smooth(Queue<Double> input,
                            double bw)

Parameters:

input - input Queue

bw - bandwidth

Returns:

Gaussian kernel regression smoothed Queue

findMax

public Integer findMax(Queue<Double> input,
                       int bandwidth)

Finds maximum Local value of a Queue uses rule based approach

Parameters:

input - queue

bandwidth - Considering neighborhood

Returns:

location of the maximum if exist or returns nulls

findMin

public Integer findMin(Queue<Double> input,
                       int bandwidth)

Finds minimum Local value of a Queue uses rule based approach

Parameters:

input - queue

bandwidth - Considering neighborhood

Returns:

location of the minimum if exist or returns nulls

findMax

public Integer findMax(Queue<Double> input,
                       int leftBandwidth,
                       int rightBandwidth)

This is used to have two different bandwidths when finding maximum.

Parameters:

input -

leftBandwidth -

rightBandwidth -

Returns:

findMin

public Integer findMin(Queue<Double> input,
                       int leftBandwidth,
                       int rightBandwidth)

This is used to have two different bandwidths when finding minimum.

Parameters:

input -

leftBandwidth -

rightBandwidth -

Returns:

update

public double update(double measurement)

kalmanFilter

public Queue<Double> kalmanFilter(Queue<Double> input)