alma.acs.algorithms

Class DataBinner

java.lang.Object

alma.acs.algorithms.DataBinner

public class DataBinner
extends java.lang.Object

Apache commons math etc do not seem to provide decent binning functionality (except for a possible abuse of class EmpiricalDistributionImpl). That's why we do it here. It's an ad-hoc implementation used for binning various parsed log data in post-mortem debugging. Not yet tested enough for important operational use.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DataBinner.BinnedTimeValues<T extends java.lang.Comparable<T>> Represents a binning (time) interval and the data mapped to it.
static class	DataBinner.TimeValue<T extends java.lang.Comparable<T>> Class to represent a point in a time series of data.

Constructor Summary

Constructors

Constructor and Description
DataBinner()

Method Summary

Modifier and Type	Method and Description
<T extends java.lang.Comparable<T>> java.util.List<DataBinner.BinnedTimeValues<T>>	binTimedData(java.util.List<DataBinner.TimeValue<T>> data, int binningIntervalMillis) Distributes the data into binning intervals of equal sizes (binningIntervalMillis).
static long	floor(long value, long multipleOf)

Methods inherited from class java.lang.Object

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

Constructor Detail

DataBinner

public DataBinner()

Method Detail

binTimedData

public <T extends java.lang.Comparable<T>> java.util.List<DataBinner.BinnedTimeValues<T>> binTimedData(java.util.List<DataBinner.TimeValue<T>> data,
                                                                                                       int binningIntervalMillis)

Distributes the data into binning intervals of equal sizes (binningIntervalMillis).

Type Parameters:

T - The type of data associated with a time.

Parameters:

data -

binningIntervalMillis -

Returns:

data mapped to bins.

floor

public static long floor(long value,
                         long multipleOf)