Package com.linkedin.feathr.common.tensor.scalar

Class ScalarTensor

java.lang.Object

com.linkedin.feathr.common.tensor.scalar.ScalarTensor

All Implemented Interfaces:

TensorData

Direct Known Subclasses:

ScalarBooleanTensor, ScalarBytesTensor, ScalarDoubleTensor, ScalarFloatTensor, ScalarIntTensor, ScalarLongTensor, ScalarStringTensor

public abstract class ScalarTensor
extends Object
implements TensorData

A base for all wrappers of scalars. Has arity of 1: 0 dimensions and 1 value. Cardinality is always 1.

Constructor Summary

Constructors

Constructor	Description
ScalarTensor()

Method Summary

Modifier and Type	Method	Description
int	cardinality()
int	estimatedCardinality()
long[]	getShape()
protected final Primitive	getType()
static ScalarTensor	wrap(Object scalar)
static ScalarTensor	wrap(Object scalar, Primitive type)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.linkedin.feathr.common.tensor.TensorData

getArity, getTypes, isEmpty, iterator

Constructor Details

ScalarTensor

public ScalarTensor()

Method Details

wrap

public static ScalarTensor wrap(Object scalar,
 Primitive type)

wrap

public static ScalarTensor wrap(Object scalar)

getType

protected final Primitive getType()

estimatedCardinality

public int estimatedCardinality()

Specified by:

estimatedCardinality in interface TensorData

Returns:

conservative estimate of number of entries in the mapping from dimensions to values. Can be cheaper to evaluate than the exact one.

cardinality

public int cardinality()

Specified by:

cardinality in interface TensorData

Returns:

exact number of entries in the mapping from dimensions to values.

getShape

public long[] getShape()

Specified by:

getShape in interface TensorData

Returns:

the current shape of the data or the supplied shape of the data