python/dynet_viz.py
def add_inputs(self, es):
        """
        returns the list of state pairs (stateF, stateB) obtained by adding 
        inputs to both forward (stateF) and backward (stateB) RNNs.  

        @param es: a list of Expression

        see also transduce(xs)

        .transduce(xs) is different from .add_inputs(xs) in the following way:

            .add_inputs(xs) returns a list of RNNState pairs. RNNState objects can be
             queried in various ways. In particular, they allow access to the previous
             state, as well as to the state-vectors (h() and s() )

            .transduce(xs) returns a list of Expression. These are just the output
             expressions. For many cases, this suffices. 
             transduce is much more memory efficient than add_inputs. 
        """
        for e in es:
            ensure_freshness(e)
        for (fb,bb) in self.builder_layers[:-1]:
            fs = fb.initial_state().transduce(es)
            bs = bb.initial_state().transduce(reversed(es))
            es = [concatenate([f,b]) for f,b in zip(fs, reversed(bs))]
        (fb,bb) = self.builder_layers[-1]
        fs = fb.initial_state().add_inputs(es)
        bs = bb.initial_state().add_inputs(reversed(es))
        return [(f,b) for f,b in zip(fs, reversed(bs))]
def add_inputs(self, es):
        """
        returns the list of state pairs (stateF, stateB) obtained by adding 
        inputs to both forward (stateF) and backward (stateB) RNNs.  

        @param es: a list of Expression

        see also transduce(xs)

        .transduce(xs) is different from .add_inputs(xs) in the following way:

            .add_inputs(xs) returns a list of RNNState pairs. RNNState objects can be
             queried in various ways. In particular, they allow access to the previous
             state, as well as to the state-vectors (h() and s() )

            .transduce(xs) returns a list of Expression. These are just the output
             expressions. For many cases, this suffices. 
             transduce is much more memory efficient than add_inputs. 
        """
        for e in es:
            ensure_freshness(e)
        for (fb,bb) in self.builder_layers[:-1]:
            fs = fb.initial_state().transduce(es)
            bs = bb.initial_state().transduce(reversed(es))
            es = [concatenate([f,b]) for f,b in zip(fs, reversed(bs))]
        (fb,bb) = self.builder_layers[-1]
        fs = fb.initial_state().add_inputs(es)
        bs = bb.initial_state().add_inputs(reversed(es))
        return [(f,b) for f,b in zip(fs, reversed(bs))]
returns the list of state pairs (stateF, stateB) obtained by adding 
        inputs to both forward (stateF) and backward (stateB) RNNs.  

        @param es: a list of Expression

        see also transduce(xs)

        .transduce(xs) is different from .add_inputs(xs) in the following way:

            .add_inputs(xs) returns a list of RNNState pairs. RNNState objects can be
             queried in various ways. In particular, they allow access to the previous
             state, as well as to the state-vectors (h() and s() )

            .transduce(xs) returns a list of Expression. These are just the output
             expressions. For many cases, this suffices. 
             transduce is much more memory efficient than add_inputs.