Deep Learning Practice, Quiz 2

January 2026 term, 12 Apr 2026, Set 1

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Question 1

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The tensor has shape: When using a pre-trained Transformer-based model (such as Wav2Vec 2.0) for a downstream classification task like Language Identification, what is the primary purpose of applying Mean Pooling across the sequence dimension?

Select one option

• A.

  To reduce the sampling rate of the audio to make it compatible with standard deep learning layers.

• B.

  To convert a variable-length sequence of hidden vectors into a single fixed- length representation that summarizes the entire utterance.

• C.

  To ensure that the model focuses only on the most intense amplitude peaks of the speech signal.

• D.

  To reverse the effects of the Convolutional Neural Network (CNN) encoder and return the data to the time domain.

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