org.bytedeco.javacpp

Class tensorflow.CompareAndBitpack

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.tensorflow.CompareAndBitpack

All Implemented Interfaces:

AutoCloseable

Enclosing class:

tensorflow

@Namespace(value="tensorflow::ops")
 @NoOffset
public static class tensorflow.CompareAndBitpack
extends Pointer

Compare values of input to threshold and pack resulting bits into a uint8. Each comparison returns a boolean true (if input_value > threshold) or and false otherwise. This operation is useful for Locality-Sensitive-Hashing (LSH) and other algorithms that use hashing approximations of cosine and L2 distances; codes can be generated from an input via:

 python
  codebook_size = 50
  codebook_bits = codebook_size * 32
  codebook = tf.get_variable('codebook', [x.shape[-1].value, codebook_bits],
                             dtype=x.dtype,
                             initializer=tf.orthogonal_initializer())
  codes = compare_and_threshold(tf.matmul(x, codebook), threshold=0.)
  codes = tf.bitcast(codes, tf.int32)  # go from uint8 to int32
  # now codes has shape x.shape[:-1] + [codebook_size]
  

**NOTE**: Currently, the innermost dimension of the tensor must be divisible by 8. Given an input shaped [s0, s1, ..., s_n], the output is a uint8 tensor shaped [s0, s1, ..., s_n / 8]. Arguments: * scope: A Scope object * input: Values to compare against threshold and bitpack. * threshold: Threshold to compare against. Returns: * Output: The bitpacked comparisons.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
CompareAndBitpack(Pointer p) Pointer cast constructor.
CompareAndBitpack(tensorflow.Scope scope, tensorflow.Input input, tensorflow.Input threshold)

Method Summary

Modifier and Type	Method and Description
tensorflow.Input	asInput()
tensorflow.Output	asOutput()
tensorflow.Node	node()
tensorflow.Operation	operation()
tensorflow.CompareAndBitpack	operation(tensorflow.Operation operation)
tensorflow.Output	output()
tensorflow.CompareAndBitpack	output(tensorflow.Output output)

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, position, put, realloc, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

CompareAndBitpack

public CompareAndBitpack(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

CompareAndBitpack

public CompareAndBitpack(@Const @ByRef
                         tensorflow.Scope scope,
                         @ByVal
                         tensorflow.Input input,
                         @ByVal
                         tensorflow.Input threshold)

Method Detail

asOutput

@ByVal
 @Name(value="operator tensorflow::Output")
public tensorflow.Output asOutput()

asInput

@ByVal
 @Name(value="operator tensorflow::Input")
public tensorflow.Input asInput()

node

public tensorflow.Node node()

operation

@ByRef
public tensorflow.Operation operation()

operation

public tensorflow.CompareAndBitpack operation(tensorflow.Operation operation)

output

@ByRef
public tensorflow.Output output()

output

public tensorflow.CompareAndBitpack output(tensorflow.Output output)