ivory.lsh.projection

Class WriteRandomVectors

java.lang.Object

org.apache.hadoop.conf.Configured

edu.umd.cloud9.util.PowerTool

ivory.lsh.projection.WriteRandomVectors

All Implemented Interfaces:

Configurable, Tool

public class WriteRandomVectors
extends PowerTool

Author:

ferhanture This class is a Hadoop task to write randomly generated vectors to a SequenceFile

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WriteRandomVectors.MyMapper0
static class	WriteRandomVectors.MyReducer0

Field Summary

Fields

Modifier and Type	Field and Description
static String[]	RequiredParameters

Constructor Summary

Constructors

Constructor and Description
WriteRandomVectors(Configuration conf)

Method Summary

Methods

Modifier and Type	Method and Description
static ArrayListOfFloatsWritable	generateUnitRandomVector(int numSamples) This piece of code is based on a publicly available Java code by Kevin Wayne, as referenced below.
static FloatAsBytesWritable	generateUnitRandomVectorAsBytes(int numSamples)
String[]	getRequiredParameters()
int	runTool()

Methods inherited from class edu.umd.cloud9.util.PowerTool

run, run

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Detail

RequiredParameters

public static final String[] RequiredParameters

Constructor Detail

WriteRandomVectors

public WriteRandomVectors(Configuration conf)

Method Detail

generateUnitRandomVector

public static ArrayListOfFloatsWritable generateUnitRandomVector(int numSamples)

This piece of code is based on a publicly available Java code by Kevin Wayne, as referenced below.

Parameters:

numSamples - number of elements in each random vector

Returns:

a random vector of numSamples random float values

generateUnitRandomVectorAsBytes

public static FloatAsBytesWritable generateUnitRandomVectorAsBytes(int numSamples)

getRequiredParameters

public String[] getRequiredParameters()

Specified by:

getRequiredParameters in class PowerTool

runTool

public int runTool()
            throws Exception

Specified by:

runTool in class PowerTool

Throws:

Exception