Method PrefixCodeDecoder

examples/word-embedding/train_tok-embed.cc:132–135

  PrefixCode* pfc;
  Parameter p_start;
  explicit PrefixCodeDecoder(ParameterCollection& model, PrefixCode* pc) :
      decoder(LAYERS, CHAR_DIM, EMBED_DIM, model), pfc(pc) {
    p_start = model.add_parameters({EMBED_DIM});
  }
  Expression loss(ComputationGraph& cg, const Expression& v, const string& code) {
    decoder.new_graph(cg);
    Expression h = tanh(v);