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A

AdaptiveHistogram - Class in com.flaptor.hist4j

This class implements a histogram that adapts to an unknown data distribution.

AdaptiveHistogram() - Constructor for class com.flaptor.hist4j.AdaptiveHistogram

Class constructor.

AdaptiveHistogram.ValueConversion - Interface in com.flaptor.hist4j

Auxiliary interface for inline functor object.

addValue(float) - Method in class com.flaptor.hist4j.AdaptiveHistogram

Adds a data point to the histogram.

addValue(AdaptiveHistogram, float) - Method in class com.flaptor.hist4j.HistogramDataNode

Adds a value to the data node.

addValue(AdaptiveHistogram, float) - Method in class com.flaptor.hist4j.HistogramForkNode

Adds a value to the histogram by recursively adding the value to either subtree, depending on the split value.

addValue(AdaptiveHistogram, float) - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for adding a value to the histogram

apply(AdaptiveHistogram.ValueConversion) - Method in class com.flaptor.hist4j.HistogramDataNode

Applies a convertion function to the values stored in the histogram.

apply(AdaptiveHistogram.ValueConversion) - Method in class com.flaptor.hist4j.HistogramForkNode

Applies a convertion function to the values stored in the histogram.

apply(AdaptiveHistogram.ValueConversion) - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for applying a convertion function to the values stored in the histogram

C

Cell - Class in com.flaptor.hist4j

Contains the data of a histogram node.

Cell() - Constructor for class com.flaptor.hist4j.Cell

com.flaptor.hist4j - package com.flaptor.hist4j

This package provides a histogram that adapts to any data distribution.

convertValue(float) - Method in interface com.flaptor.hist4j.AdaptiveHistogram.ValueConversion

This method should implement the conversion function.

count - Variable in class com.flaptor.hist4j.Cell

G

getAccumCount(float) - Method in class com.flaptor.hist4j.AdaptiveHistogram

Returns the cumulative density function for a given data point.

getAccumCount(float) - Method in class com.flaptor.hist4j.HistogramDataNode

Returns the cumulative density function for a given data point.

getAccumCount(float) - Method in class com.flaptor.hist4j.HistogramForkNode

Returns the cumulative density function for a given data point.

getAccumCount(float) - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for getting the cumulative density function for a given value

getCount(float) - Method in class com.flaptor.hist4j.AdaptiveHistogram

Returns the number of data points stored in the same bucket as a given value.

getCount(float) - Method in class com.flaptor.hist4j.HistogramDataNode

Returns the number of data points stored in the same bucket as a given value.

getCount(float) - Method in class com.flaptor.hist4j.HistogramForkNode

Returns the number of data points stored in the same bucket as a given value.

getCount(float) - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for getting the number of values stored in the same bucket as a reference value

getCountPerNodeLimit() - Method in class com.flaptor.hist4j.AdaptiveHistogram

This method is used by the internal data structure of the histogram to get the limit of data points that should be counted at one bucket.

getValueForAccumCount(long[]) - Method in class com.flaptor.hist4j.HistogramDataNode

Returns the data point where the running cumulative count reaches the target cumulative count.

getValueForAccumCount(long[]) - Method in class com.flaptor.hist4j.HistogramForkNode

Returns the data point where the running cumulative count reaches the target cumulative count.

getValueForAccumCount(long[]) - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for getting the value for which the cumulative density function reaches the desired value

getValueForPercentile(int) - Method in class com.flaptor.hist4j.AdaptiveHistogram

Returns the data point that splits the data set at a given percentile.

H

HistogramDataNode - Class in com.flaptor.hist4j

The HistogramDataNode stores the histogram data for a range of values.

HistogramDataNode() - Constructor for class com.flaptor.hist4j.HistogramDataNode

Creates an empty data node.

HistogramDataNode(long, float, float) - Constructor for class com.flaptor.hist4j.HistogramDataNode

Creates a data node for the given range with the given instance count.

HistogramForkNode - Class in com.flaptor.hist4j

The HistogramForkNode splits the data range in two at a given value, pointing to two subtrees, one for values smaller than the split value, and one for values larger than the split value.

HistogramForkNode(float, HistogramNode, HistogramNode) - Constructor for class com.flaptor.hist4j.HistogramForkNode

Creates a fork node with the given split value and subtrees.

HistogramNode - Class in com.flaptor.hist4j

A HistogramNode is the building block for the histogram data structure and provides a common inteface for both the data and the fork nodes.

HistogramNode() - Constructor for class com.flaptor.hist4j.HistogramNode

M

margin(int) - Method in class com.flaptor.hist4j.HistogramNode

Prints a margin corresponding to the provided tree level

maxValue - Variable in class com.flaptor.hist4j.Cell

minValue - Variable in class com.flaptor.hist4j.Cell

N

normalize(float, float) - Method in class com.flaptor.hist4j.AdaptiveHistogram

Normalizes all the values to the desired range.

R

reset() - Method in class com.flaptor.hist4j.AdaptiveHistogram

Erases all data from the histogram.

reset() - Method in class com.flaptor.hist4j.HistogramDataNode

Clears the data node.

reset() - Method in class com.flaptor.hist4j.HistogramForkNode

Clears the fork node, recursively erasing the subtrees.

reset() - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for clearing the node

S

show() - Method in class com.flaptor.hist4j.AdaptiveHistogram

Shows the histograms' underlying data structure.

show(int) - Method in class com.flaptor.hist4j.HistogramDataNode

Prints this nodes' data with a margin depending on the level of the node in the tree.

show(int) - Method in class com.flaptor.hist4j.HistogramForkNode

Prints the data for the nodes in its subtrees.

show(int) - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for showing the data structure

T

toTable() - Method in class com.flaptor.hist4j.AdaptiveHistogram

Return a table representing the data in this histogram.

toTable(ArrayList<Cell>) - Method in class com.flaptor.hist4j.HistogramDataNode

Build the table representing the histogram data adding this node's cell to it.

toTable(ArrayList<Cell>) - Method in class com.flaptor.hist4j.HistogramForkNode

Build the table representing the histogram data adding the data from each subtree.

toTable(ArrayList<Cell>) - Method in class com.flaptor.hist4j.HistogramNode

Abstract method for getting a table representing the histogram data

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