about Bi-directional LSTM version model

[Nullees]

Thanks for your implements of DKT model.I change your model as LSTM and other version.They are all work well. But when i change LSTM function(only change Bidirectioanl=True and *hidden_size 2**). It's AUC value reached about 1.0. This is unbelievable. Did you know how to change as Bi-directional LSTM successfully?

[ghost]

Yes, I did. It is unreasonable to use Bi-LSTM in knowledge tracing task. Because the output of each time step is the prediction of the score of next time step, if you adopt Bi-LSTM, the score of next time step will be visible to the model, the model will predict perfectly.