org.tensorflow.op.sparse

Class SparseToDense<U>

java.lang.Object

org.tensorflow.op.PrimitiveOp

org.tensorflow.op.sparse.SparseToDense<U>

Type Parameters:

U - data type for dense() output

All Implemented Interfaces:

Op, Operand<U>

@Operator(group="sparse")
public final class SparseToDense<U>
extends PrimitiveOp
implements Operand<U>

Converts a sparse representation into a dense tensor.

Builds an array `dense` with shape `output_shape` such that

 # If sparse_indices is scalar
 dense[i] = (i == sparse_indices ? sparse_values : default_value)
 
 # If sparse_indices is a vector, then for each i
 dense[sparse_indices[i]] = sparse_values[i]
 
 # If sparse_indices is an n by d matrix, then for each i in [0, n)
 dense[sparse_indices[i][0], ..., sparse_indices[i][d-1]] = sparse_values[i]
 

All other values in `dense` are set to `default_value`. If `sparse_values` is a scalar, all sparse indices are set to this single value.

Indices should be sorted in lexicographic order, and indices must not contain any repeats. If `validate_indices` is true, these properties are checked during execution.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SparseToDense.Options Optional attributes for SparseToDense

Field Summary

Fields inherited from class org.tensorflow.op.PrimitiveOp

operation

Method Summary

Modifier and Type	Method and Description
Output<U>	asOutput() Returns the symbolic handle of a tensor.
static <U,T extends Number> SparseToDense<U>	create(Scope scope, Operand<T> sparseIndices, Operand<T> outputShape, Operand<U> sparseValues, Operand<U> defaultValue, SparseToDense.Options... options) Factory method to create a class wrapping a new SparseToDense operation.
Output<U>	dense() Dense output tensor of shape `output_shape`.
static SparseToDense.Options	validateIndices(Boolean validateIndices)

Methods inherited from class org.tensorflow.op.PrimitiveOp

equals, hashCode, op, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

create

public static <U,T extends Number> SparseToDense<U> create(Scope scope,
                                                           Operand<T> sparseIndices,
                                                           Operand<T> outputShape,
                                                           Operand<U> sparseValues,
                                                           Operand<U> defaultValue,
                                                           SparseToDense.Options... options)

Factory method to create a class wrapping a new SparseToDense operation.

Parameters:

scope - current scope

sparseIndices - 0-D, 1-D, or 2-D. `sparse_indices[i]` contains the complete index where `sparse_values[i]` will be placed.

outputShape - 1-D. Shape of the dense output tensor.

sparseValues - 1-D. Values corresponding to each row of `sparse_indices`, or a scalar value to be used for all sparse indices.

defaultValue - Scalar value to set for indices not specified in `sparse_indices`.

options - carries optional attributes values

Returns:

a new instance of SparseToDense

validateIndices

public static SparseToDense.Options validateIndices(Boolean validateIndices)

Parameters:

validateIndices - If true, indices are checked to make sure they are sorted in lexicographic order and that there are no repeats.

dense

public Output<U> dense()

Dense output tensor of shape `output_shape`.

asOutput

public Output<U> asOutput()

Description copied from interface: Operand

Returns the symbolic handle of a tensor.

Inputs to TensorFlow operations are outputs of another TensorFlow operation. This method is used to obtain a symbolic handle that represents the computation of the input.

Specified by:

asOutput in interface Operand<U>

See Also:

OperationBuilder.addInput(Output)