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How to check if a neural network has learned a specific phenomenon?

Question:

How do we check if a neural network trained on task A has learned a phenomenon specific to task B?

To NLP, the task is called probing/diagnostic classifier/probing task.

How do we do probing?

  • Freeze the parameters of Input layer and Hidden layers,
  • Replace the last layers to Probing layers,
  • Train the Probing layers on a small dataset

If task A is Masked word prediction and task B is Sentiment analysis, then:

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