org.apache.mahout.classifier.df.mapreduce.partial

Class Step1Mapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<KEYIN,VALUEIN,KEYOUT,VALUEOUT>

org.apache.mahout.classifier.df.mapreduce.MapredMapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,TreeID,MapredOutput>

org.apache.mahout.classifier.df.mapreduce.partial.Step1Mapper

Deprecated.

@Deprecated
public class Step1Mapper
extends MapredMapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,TreeID,MapredOutput>

First step of the Partial Data Builder. Builds the trees using the data available in the InputSplit. Predict the oob classes for each tree in its growing partition (input split).

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
Step1Mapper() Deprecated.

Method Summary

Modifier and Type	Method and Description
protected void	cleanup(org.apache.hadoop.mapreduce.Mapper.Context context) Deprecated.
protected void	configure(Long seed, int partition, int numMapTasks, int numTrees) Deprecated. Useful when testing
int	getFirstTreeId() Deprecated.
protected void	map(org.apache.hadoop.io.LongWritable key, org.apache.hadoop.io.Text value, org.apache.hadoop.mapreduce.Mapper.Context context) Deprecated.
static int	nbTrees(int numMaps, int numTrees, int partition) Deprecated. Compute the number of trees for a given partition.
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context context) Deprecated.

Methods inherited from class org.apache.mahout.classifier.df.mapreduce.MapredMapper

configure, getDataset, getTreeBuilder, isOutput

Methods inherited from class org.apache.hadoop.mapreduce.Mapper

run

Methods inherited from class java.lang.Object

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

Constructor Detail

Step1Mapper

public Step1Mapper()

Deprecated.

Method Detail

getFirstTreeId

public int getFirstTreeId()

Deprecated.

setup

protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
              throws IOException,
                     InterruptedException

Deprecated.

Overrides:

setup in class MapredMapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,TreeID,MapredOutput>

Throws:

IOException

InterruptedException

configure

protected void configure(Long seed,
                         int partition,
                         int numMapTasks,
                         int numTrees)

Deprecated.

Useful when testing

Parameters:

partition - current mapper inputSplit partition

numMapTasks - number of running map tasks

numTrees - total number of trees in the forest

nbTrees

public static int nbTrees(int numMaps,
                          int numTrees,
                          int partition)

Deprecated.

Compute the number of trees for a given partition. The first partitions may be longer than the rest because of the remainder.

Parameters:

numMaps - total number of maps (partitions)

numTrees - total number of trees to build

partition - partition to compute the number of trees for

map

protected void map(org.apache.hadoop.io.LongWritable key,
                   org.apache.hadoop.io.Text value,
                   org.apache.hadoop.mapreduce.Mapper.Context context)
            throws IOException,
                   InterruptedException

Deprecated.

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,TreeID,MapredOutput>

Throws:

IOException

InterruptedException

cleanup

protected void cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)
                throws IOException,
                       InterruptedException

Deprecated.

Overrides:

cleanup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,TreeID,MapredOutput>

Throws:

IOException

InterruptedException