Created by: ChinaLiuHao

请问我在用CAPI实现seq2seq预测模型时，只能得到生成序列的id，但是无法得到生成序列的打分值。请问下原因？

附：预测代码

    int sentence_ids[] = {0, 33015, 10213, 4, 87713, 12908, 630;
    paddle_ivector sentence = paddle_ivector_create(
        sentence_ids, sizeof(sentence_ids) / sizeof(int), false, false);
    CHECK(paddle_arguments_set_ids(in_args, 0, sentence));

    int seq_pos_array[] = {0, sizeof(sentence_ids) / sizeof(int)};
    paddle_ivector seq_pos = paddle_ivector_create(
        seq_pos_array, sizeof(seq_pos_array) / sizeof(int), false, false);

    CHECK(paddle_arguments_set_sequence_start_pos(in_args, 0, 0, seq_pos));

    paddle_arguments out_args = paddle_arguments_create_none();
    CHECK(paddle_gradient_machine_forward(machine,
        in_args, out_args, false));
    uint64_t total_size = 0;
    paddle_arguments_get_size(out_args, &total_size);
    cout << "#63\t" << total_size << endl;
    paddle_ivector ivec = paddle_ivector_create_none();
    paddle_arguments_get_ids(out_args, 0, ivec);
    uint64_t vec_size = 0;
    paddle_ivector_get_size(ivec, &vec_size);
    int* array;
    paddle_ivector_get(ivec, &array);
    for (uint64_t i = 0; i < vec_size; i++) {
        cout << array[i] << endl;
    }