ContainersTemp GaussianProcessInterpolationRestraintSparse::get_input_containers() const { ContainersTemp ret; ContainersTemp ret1 = gpi_->mean_function_->get_input_containers(); ret.insert(ret.end(),ret1.begin(),ret1.end()); ContainersTemp ret2 = gpi_->covariance_function_->get_input_containers(); ret.insert(ret.end(),ret2.begin(),ret2.end()); return ret; }