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What role does the update gate play in a GRU when processing text sequences?

easy📝 Conceptual Q1 of 15
NLP - Sequence Models for NLP
What role does the update gate play in a GRU when processing text sequences?
AIt initializes the hidden state with zeros
BIt decides the output dimension of the GRU layer
CIt controls how much of the past information to keep for the current step
DIt normalizes the input embeddings before processing
Step-by-Step Solution
Solution:

  1. Step 1: Understand the update gate function

    The update gate in a GRU controls the extent to which the previous hidden state is retained versus updated with new information.

  2. Step 2: Relate to text sequence processing

    In text, this helps the model remember relevant past context while incorporating new input.

  3. Final Answer:

    It controls how much of the past information to keep for the current step -> Option C

  4. Quick Check:

    Update gate balances past and new info [OK]
Quick Trick: Update gate balances old and new info in GRU [OK]
Common Mistakes:
MISTAKES
  • Confusing update gate with reset gate
  • Thinking update gate controls output size
  • Assuming update gate normalizes inputs

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