Package deepnetts.tensor

Class Tensor2D

java.lang.Object

deepnetts.tensor.TensorBase

deepnetts.tensor.Tensor2D

All Implemented Interfaces:

Tensor, Serializable

public final class Tensor2D
extends TensorBase

A 2D tensor / matrix with specified number of rows and columns..

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Tensor2D(float[][] vals)	Creates a 2D tensor / matrix with specified values.
Tensor2D(int rows, int cols)	Creates a tensor with specified number of rows and columns (matrix).
Tensor2D(int rows, int cols, float[] values)

Method Summary

Modifier and Type	Method	Description
final void	add(float value, int row, int col)	Adds specified value to matrix value at position x, y
final Tensor2D	add(Tensor1D toAdd)
Object	clone()
final int	cols()
TensorBase	copy()
void	createColsCache()
void	createRowsAndColsCache()
void	createRowsCache()
Tensor2D	dotProd(Tensor2D matrixB, Tensor2D result)	Performs dot product operation on this tensor and matrib, and stores results in result tensor.
Tensor1D	dotProdFromCache(Tensor1D vectorB, Tensor1D result)	Performs dot product operation on this 2d tensor (matrix) and vector , and stores results in result tensor.
static Tensor2D	fromFile(String filePath)
final float	get(int row, int col)	Returns matrix value at row, col
float[]	getCol(int col, float[] colBuff)
float[]	getColsCache(int colIdx)
float[]	getRow(int row, float[] rowBuff)
float[]	getRowsCache(int rowIdx)
Tensor2D	getTransposed()
final int	rows()
final void	set(float val, int row, int col)	Set value at specified [row, col] position.
void	setCol(int colIdx, float[] colData)
void	setRow(int rowIdx, float[] rowData)
void	setValuesFromStringTransposed(String values)
final void	sub(float val, int row, int col)
String	toString()

Methods inherited from class deepnetts.tensor.TensorBase

add, add, addInto, apply, apply, copyFrom, copyFrom, copyFromGPU, copyToGPU, createAcceleratorBridge, div, div, div, equals, equals, fill, getAcceleratorBridge, getOrCreateAccBridge, getValues, hashCode, mean, multiply, multiply, multiplyElementWise, numDimensions, numElements, randomize, replace, setValues, setValuesFromString, shape, sqr, sqrt, std, sub, sub, subInplace, subInto, sum, sumAbs, sumSqr, valuesAsString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

Tensor2D

public Tensor2D(int rows,
 int cols)

Creates a tensor with specified number of rows and columns (matrix).

Parameters:

rows - number of rows

cols - number of columns

Tensor2D

public Tensor2D(int rows,
 int cols,
 float[] values)

Tensor2D

public Tensor2D(float[][] vals)

Creates a 2D tensor / matrix with specified values.

Parameters:

vals - values to put into matrix

Method Details

cols

public final int cols()

rows

public final int rows()

get

public final float get(int row,
 int col)

Returns matrix value at row, col

Parameters:

row -

col -

Returns:

value at [row, col]

set

public final void set(float val,
 int row,
 int col)

Set value at specified [row, col] position.

Parameters:

val - value to set

row - tensor's row index

col - tensor's col index

setRow

public void setRow(int rowIdx,
 float[] rowData)

setCol

public void setCol(int colIdx,
 float[] colData)

createRowsCache

public void createRowsCache()

createColsCache

public void createColsCache()

createRowsAndColsCache

public void createRowsAndColsCache()

getRow

public float[] getRow(int row,
 float[] rowBuff)

getCol

public float[] getCol(int col,
 float[] colBuff)

add

public final void add(float value,
 int row,
 int col)

Adds specified value to matrix value at position x, y

Parameters:

value -

row -

col -

add

public final Tensor2D add(Tensor1D toAdd)

sub

public final void sub(float val,
 int row,
 int col)

copy

public TensorBase copy()

Overrides:

copy in class TensorBase

clone

public Object clone()

Overrides:

clone in class TensorBase

getTransposed

public Tensor2D getTransposed()

setValuesFromStringTransposed

public void setValuesFromStringTransposed(String values)

Overrides:

setValuesFromStringTransposed in class TensorBase

toString

public String toString()

Overrides:

toString in class TensorBase

fromFile

public static Tensor2D fromFile(String filePath)
                         throws IOException

Throws:

IOException

dotProd

public Tensor2D dotProd(Tensor2D matrixB,
 Tensor2D result)

Performs dot product operation on this tensor and matrib, and stores results in result tensor.

Parameters:

matrixB -

result -

Returns:

dotProdFromCache

public Tensor1D dotProdFromCache(Tensor1D vectorB,
 Tensor1D result)

Performs dot product operation on this 2d tensor (matrix) and vector , and stores results in result tensor.

Parameters:

vectorB -

result -

Returns:

getRowsCache

public float[] getRowsCache(int rowIdx)

getColsCache

public float[] getColsCache(int colIdx)