org.apache.mahout.math.hadoop.stochasticsvd

Class ABtDenseOutJob

java.lang.Object

org.apache.mahout.math.hadoop.stochasticsvd.ABtDenseOutJob

public final class ABtDenseOutJob
extends Object

Computes ABt products, then first step of QR which is pushed down to the reducer.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ABtDenseOutJob.ABtMapper So, here, i preload A block into memory.
static class	ABtDenseOutJob.QRReducer QR first step pushed down to reducer.

Field Summary

Fields

Modifier and Type	Field and Description
static String	PROP_BT_BROADCAST
static String	PROP_BT_PATH
static String	PROP_SB_PATH
static String	PROP_SQ_PATH
static String	PROP_XI_PATH

Method Summary

Modifier and Type	Method and Description
static void	run(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path[] inputAPaths, org.apache.hadoop.fs.Path inputBtGlob, org.apache.hadoop.fs.Path xiPath, org.apache.hadoop.fs.Path sqPath, org.apache.hadoop.fs.Path sbPath, org.apache.hadoop.fs.Path outputPath, int aBlockRows, int minSplitSize, int k, int p, int outerProdBlockHeight, int numReduceTasks, boolean broadcastBInput)

Methods inherited from class java.lang.Object

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

Field Detail

PROP_BT_PATH

public static final String PROP_BT_PATH

See Also:

Constant Field Values

PROP_BT_BROADCAST

public static final String PROP_BT_BROADCAST

See Also:

Constant Field Values

PROP_SB_PATH

public static final String PROP_SB_PATH

See Also:

Constant Field Values

PROP_SQ_PATH

public static final String PROP_SQ_PATH

See Also:

Constant Field Values

PROP_XI_PATH

public static final String PROP_XI_PATH

See Also:

Constant Field Values

Method Detail

run

public static void run(org.apache.hadoop.conf.Configuration conf,
                       org.apache.hadoop.fs.Path[] inputAPaths,
                       org.apache.hadoop.fs.Path inputBtGlob,
                       org.apache.hadoop.fs.Path xiPath,
                       org.apache.hadoop.fs.Path sqPath,
                       org.apache.hadoop.fs.Path sbPath,
                       org.apache.hadoop.fs.Path outputPath,
                       int aBlockRows,
                       int minSplitSize,
                       int k,
                       int p,
                       int outerProdBlockHeight,
                       int numReduceTasks,
                       boolean broadcastBInput)
                throws ClassNotFoundException,
                       InterruptedException,
                       IOException

Throws:

ClassNotFoundException

InterruptedException

IOException