Question 12
Which of the following techniques help mitigate the vanishing gradient problem in recurrent neural networks?
1. Gradient clipping
2. Use of ReLU activation to preserve gradient flow
3. Use of LSTM units
4. Data augmentation (e.g., reversing input sequence)
1 and 2 only
2 and 3 only
3 and 4 only
1, 2, and 3 only