Function compute_objective_function

src/callbacks/check_gradients.cpp:58–88

@details Forward prop is applied to all layers, except input * layers. It is assumed that input layers have already loaded data. */

 *  layers. It is assumed that input layers have already loaded data.
 */
EvalType compute_objective_function(model& m)
{
  const auto& c = static_cast<SGDExecutionContext&>(m.get_execution_context());
  m.get_activation_reference_counter().clear();

  // Forward prop, skipping input layers

  if (m.is_subgraph_parallelism_enabled()) {
    for (auto&& l : m.get_layers()) {
      if (dynamic_cast<input_layer<DataType>*>(l) == nullptr &&
          l->get_run_layer_in_subgraph()) {
        l->forward_prop();
      }
    }
  }
  else // sub-graph parallelism not enabled
  {
    for (auto&& l : m.get_layers()) {
      if (dynamic_cast<input_layer<DataType>*>(l) == nullptr) {
        l->forward_prop();
      }
    }
  }

  // Get objective function value
  auto&& obj = m.get_objective_function();
  const auto mode = c.get_execution_mode();
  const auto mini_batch_size = m.get_current_mini_batch_size();
  obj->start_evaluation(mode, mini_batch_size);
  return obj->finish_evaluation(mode, mini_batch_size);
}

struct DefaultErrorReporter
{