GRUBlockCell

public final class GRUBlockCell

Computes the GRU cell forward propagation for 1 time step.

Args x: Input to the GRU cell. h_prev: State input from the previous GRU cell. w_ru: Weight matrix for the reset and update gate. w_c: Weight matrix for the cell connection gate. b_ru: Bias vector for the reset and update gate. b_c: Bias vector for the cell connection gate.

Returns r: Output of the reset gate. u: Output of the update gate. c: Output of the cell connection gate. h: Current state of the GRU cell.

Note on notation of the variables:

Concatenation of a and b is represented by a_b Element-wise dot product of a and b is represented by ab Element-wise dot product is represented by \circ Matrix multiplication is represented by *

Biases are initialized with : `b_ru` - constant_initializer(1.0) `b_c` - constant_initializer(0.0)

This kernel op implements the following mathematical equations: 

x_h_prev = [x, h_prev]
 
 [r_bar u_bar] = x_h_prev * w_ru + b_ru
 
 r = sigmoid(r_bar)
 u = sigmoid(u_bar)
 
 h_prevr = h_prev \circ r
 
 x_h_prevr = [x h_prevr]
 
 c_bar = x_h_prevr * w_c + b_c
 c = tanh(c_bar)
 
 h = (1-u) \circ c + u \circ h_prev

Constants

String OP_NAME The name of this op, as known by TensorFlow core engine

Public Methods

Output<T>
c()
static <T extends TNumber> GRUBlockCell<T>
create(Scope scope, Operand<T> x, Operand<T> hPrev, Operand<T> wRu, Operand<T> wC, Operand<T> bRu, Operand<T> bC)
Factory method to create a class wrapping a new GRUBlockCell operation.
Output<T>
h()
Output<T>
r()
Output<T>
u()

Inherited Methods

org.tensorflow.op.RawOp
final boolean
equals(Object obj)
final int
hashCode()
Operation
op()
Return this unit of computation as a single Operation.
final String
toString()
boolean
equals(Object arg0)
final Class<?>
getClass()
int
hashCode()
final void
notify()
final void
notifyAll()
String
toString()
final void
wait(long arg0, int arg1)
final void
wait(long arg0)
final void
wait()
org.tensorflow.op.Op
abstract ExecutionEnvironment
env()
Return the execution environment this op was created in.
abstract Operation
op()
Return this unit of computation as a single Operation.

Constants

public static final String OP_NAME

The name of this op, as known by TensorFlow core engine

Constant Value: "GRUBlockCell"

Public Methods

public Output<T> c ()

public static GRUBlockCell<T> create (Scope scope, Operand<T> x, Operand<T> hPrev, Operand<T> wRu, Operand<T> wC, Operand<T> bRu, Operand<T> bC)

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

Parameters
scope current scope
Returns
  • a new instance of GRUBlockCell

public Output<T> h ()

public Output<T> r ()

public Output<T> u ()