org.apache.ignite.ml.math.isolve.lsqr

Class LSQROnHeap<K,V>

java.lang.Object

org.apache.ignite.ml.math.isolve.lsqr.AbstractLSQR

org.apache.ignite.ml.math.isolve.lsqr.LSQROnHeap<K,V>

All Implemented Interfaces:

AutoCloseable

public class LSQROnHeap<K,V>
extends AbstractLSQR
implements AutoCloseable

Distributed implementation of LSQR algorithm based on AbstractLSQR and Dataset.

Constructor Summary

Constructors

Constructor and Description
LSQROnHeap(DatasetBuilder<K,V> datasetBuilder, PartitionDataBuilder<K,V,LSQRPartitionContext,SimpleLabeledDatasetData> partDataBuilder) Constructs a new instance of OnHeap LSQR algorithm implementation.

Method Summary

Modifier and Type	Method and Description
protected double	beta(double[] x, double alfa, double beta) Calculates beta.
protected double	bnorm() Calculates bnorm.
void	close()
protected Integer	getColumns() Returns number of columns in dataset.
protected double[]	iter(double bnorm, double[] target) Perform LSQR iteration.

Methods inherited from class org.apache.ignite.ml.math.isolve.lsqr.AbstractLSQR

solve

Methods inherited from class java.lang.Object

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

Constructor Detail

LSQROnHeap

public LSQROnHeap(DatasetBuilder<K,V> datasetBuilder,
                  PartitionDataBuilder<K,V,LSQRPartitionContext,SimpleLabeledDatasetData> partDataBuilder)

Constructs a new instance of OnHeap LSQR algorithm implementation.

Parameters:

datasetBuilder - Dataset builder.

partDataBuilder - Partition data builder.

Method Detail

bnorm

protected double bnorm()

Calculates bnorm.

Specified by:

bnorm in class AbstractLSQR

Returns:

bnorm

beta

protected double beta(double[] x,
                      double alfa,
                      double beta)

Calculates beta.

Specified by:

beta in class AbstractLSQR

Parameters:

x - X value.

alfa - Alfa value.

beta - Beta value.

Returns:

Beta.

iter

protected double[] iter(double bnorm,
                        double[] target)

Perform LSQR iteration.

Specified by:

iter in class AbstractLSQR

Parameters:

bnorm - Bnorm value.

target - Target value.

Returns:

Iteration result.

getColumns

protected Integer getColumns()

Returns number of columns in dataset.

Specified by:

getColumns in class AbstractLSQR

Returns:

number of columns

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception