gov.llnl.ontology.mapreduce.stats
Class WordOccurrenceCountMR

java.lang.Object
  org.apache.hadoop.conf.Configured
      gov.llnl.ontology.mapreduce.CorpusTableMR
          gov.llnl.ontology.mapreduce.stats.WordOccurrenceCountMR

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

public class WordOccurrenceCountMR
extends CorpusTableMR

A Map/Reduce job that counts word co-occurrence frequencies and writes them to hdfs.

Author:

Keith Stevens

Nested Class Summary

static class

WordOccurrenceCountMR.WordOccurrenceCountMapper The TableMapper responsible for most of the work.

Nested classes/interfaces inherited from class gov.llnl.ontology.mapreduce.CorpusTableMR

CorpusTableMR.CorpusTableMapper<K,V>

Field Summary

static String	ABOUT The job description used in the help text.
static String	CONF_PREFIX The prefix for every configuration.
static String	MR_NAME
static String	USE_ORDER The configuration set when word ordering features should be used.
static String	USE_POS The configuration set when part of speech features should be used.
static String	WINDOW_SIZE The configuration used to set the maximum sliding window size.

Fields inherited from class gov.llnl.ontology.mapreduce.CorpusTableMR

TABLE

Constructor Summary

WordOccurrenceCountMR()

Method Summary

protected void	addOptions(MRArgOptions options) Add more command line arguments.
protected String	jobName() Returns a descriptive job name for this map reduce task.
static void	main(String[] args) Runs the WordOccurrenceCountMR.
protected Class	mapperClass() Returns the Class object for the Mapper task.
protected Class	mapperKeyClass() Returns the Class object for the Mapper Value of this task.
protected Class	mapperValueClass() Returns the Class object for the Mapper Value of this task.
protected void	setupConfiguration(MRArgOptions options, org.apache.hadoop.conf.Configuration conf) Copies command line arguments to a Configuration so that Map/Reduce jobs can utilize the values set.
protected void	setupReducer(String tableName, org.apache.hadoop.mapreduce.Job job, MRArgOptions options) Sets up the Reducer for this job.
protected void	validateOptions(MRArgOptions options) Returns true if the MRArgOptions contains a valid value for each requried option.

Methods inherited from class gov.llnl.ontology.mapreduce.CorpusTableMR

run

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

getConf, setConf

Methods inherited from class java.lang.Object

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

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

getConf, setConf

Field Detail

ABOUT

public static final String ABOUT

The job description used in the help text.

See Also:

Constant Field Values

CONF_PREFIX

public static final String CONF_PREFIX

The prefix for every configuration.

See Also:

Constant Field Values

MR_NAME

public static final String MR_NAME

See Also:

Constant Field Values

USE_POS

public static final String USE_POS

The configuration set when part of speech features should be used.

See Also:

Constant Field Values

USE_ORDER

public static final String USE_ORDER

The configuration set when word ordering features should be used.

See Also:

Constant Field Values

WINDOW_SIZE

public static final String WINDOW_SIZE

The configuration used to set the maximum sliding window size.

See Also:

Constant Field Values

Constructor Detail

WordOccurrenceCountMR

public WordOccurrenceCountMR()

Method Detail

main

public static void main(String[] args)
                 throws Exception

Runs the WordOccurrenceCountMR.

Throws:

Exception

jobName

protected String jobName()

Returns a descriptive job name for this map reduce task.

Overrides:

jobName in class CorpusTableMR

addOptions

protected void addOptions(MRArgOptions options)

Add more command line arguments. By default, this adds no options.

Overrides:

addOptions in class CorpusTableMR

validateOptions

protected void validateOptions(MRArgOptions options)

Returns true if the MRArgOptions contains a valid value for each requried option. By default, this does no validation.

Overrides:

validateOptions in class CorpusTableMR

setupConfiguration

protected void setupConfiguration(MRArgOptions options,
                                  org.apache.hadoop.conf.Configuration conf)

Copies command line arguments to a Configuration so that Map/Reduce jobs can utilize the values set. By default, this does no configuration.

Overrides:

setupConfiguration in class CorpusTableMR

mapperClass

protected Class mapperClass()

Returns the Class object for the Mapper task.

Specified by:

mapperClass in class CorpusTableMR

mapperKeyClass

protected Class mapperKeyClass()

Returns the Class object for the Mapper Value of this task.

Overrides:

mapperKeyClass in class CorpusTableMR

mapperValueClass

protected Class mapperValueClass()

Returns the Class object for the Mapper Value of this task.

Overrides:

mapperValueClass in class CorpusTableMR

setupReducer

protected void setupReducer(String tableName,
                            org.apache.hadoop.mapreduce.Job job,
                            MRArgOptions options)

Sets up the Reducer for this job.

Overrides:

setupReducer in class CorpusTableMR