Try some more complex models

[SCAZT]

Try to explore if there is other complex model that have better performances.

• [x] Give weights to different labels to decrease the impact of the data imbalance.
• [x] Model construction
• [x] Training
• [x] Evaluation

[SCAZT]

The model is facing an overfitting issue. Solutions as follows:

• [x] adjust learning rate
• [x] add an regulation term/add dropout layer