It is a tensor (CPULongType).
Edit:
A single tensor of an tensor output (*model_outputs *).
model_outputs have dimensions [batch x num_detection x 15].
I want to convert it into int.
I sensed a GCC version problem.
I have solved the problem. In GCC we can not do this
current_char = model_outputs[the_datas[i]->results->at(j).QueueNumber][k].item<int>();

We must do this
at::Tensor tmp = model_outputs[the_datas[i]->results->at(j).QueueNumber][k]
current_char =tmp.item<int>();

@ptrblck  Thank you very much for your time.