GDCN implementation

[an-tran528]

I'm trying to search around for the implementation GDCN, an updated version for DCN but seems like it's not yet supported.

I'm trying to tweak the Cross layer implementation by adding gate layers with sigmoid activation:

      self._gate_u = tf.keras.layers.Dense(
          self._projection_dim,
          kernel_initializer=_clone_initializer(self._kernel_initializer),
          kernel_regularizer=self._kernel_regularizer,
          use_bias=False,
          dtype=self.dtype,
      )
      self._gate_v = tf.keras.layers.Dense(
          last_dim,
          kernel_initializer=_clone_initializer(self._kernel_initializer),
          bias_initializer=self._bias_initializer,
          kernel_regularizer=self._kernel_regularizer,
          bias_regularizer=self._bias_regularizer,
          use_bias=self._use_bias,
          dtype=self.dtype,
          activation="sigmoid",
      )
    ....
def call:
    return x0 * prod_output + self._gate_v(self._gate_u(x)) + x

But loss doesn't converge for my use case. Is the implementation correct?

[zhangfan555]

From the paper, it should be "x0 prod_output self._gate_v(self._gate_u(x)) + x" ?

[rlcauvin]

I'd be interested in seeing the full code for the GDCN once you get it working. Hopefully, the correction from @zhangfan555 will make the loss converge.