org.apache.pinot.tools.data.generator

Class PatternSeasonalGenerator

java.lang.Object

org.apache.pinot.tools.data.generator.PatternSeasonalGenerator

All Implemented Interfaces:

Generator

public class PatternSeasonalGenerator
extends Object
implements Generator

PatternSeasonalGenerator generates sinus wave patterns with a linear trend, gaussian noise, and cyclically repeating scaling factors. These patterns are typical for di-urnal usage patterns such as clicks and impressions of a website. Generator example:

     mean = 10
     sigma = 1
     wavelength = 4
     amplitude = 10
     scaling factors = [ 0.5, 1.0, 1.0, 1.0, 1.0, 0.5 ] // e.g. high weekdays, low week ends

     returns [ 5, 10, 12, 7, 11, 18, 21, 6, 2, 7, 12, 20, 21, 13, ... ]
 

Configuration examples:

• ./pinot-tools/src/main/resources/generator/simpleWebsite_generator.json
• ./pinot-tools/src/main/resources/generator/complexWebsite_generator.json

Constructor Summary

Constructors

Constructor and Description
PatternSeasonalGenerator(double mean, double sigma, double trend, double wavelength, double amplitude, double offset, int seed, double[] scalingFactors)
PatternSeasonalGenerator(Map<String,Object> templateConfig)

Method Summary

Modifier and Type	Method and Description
void	init()
Object	next()

Methods inherited from class java.lang.Object

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

Constructor Detail

PatternSeasonalGenerator

public PatternSeasonalGenerator(Map<String,Object> templateConfig)

PatternSeasonalGenerator

public PatternSeasonalGenerator(double mean,
                                double sigma,
                                double trend,
                                double wavelength,
                                double amplitude,
                                double offset,
                                int seed,
                                double[] scalingFactors)

Method Detail

init

public void init()

Specified by:

init in interface Generator

next

public Object next()

Specified by:

next in interface Generator