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Questions and Answers
What are the inputs to the decoder in a Transformer model?
The inputs to the decoder in a Transformer model are the context from the encoder and the previous outputs.
What are the two types of attention in the decoder?
The two types of attention in the decoder are self-attention and encoder-decoder attention.
What is the purpose of the linear layer followed by a softmax function in the decoder?
The purpose of the linear layer followed by a softmax function in the decoder is to generate the output word.
How does the decoder generate the next word?
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What are the components of the encoder architecture in a Transformer?
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What is the role of the decoder stack in a Transformer?
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What is the input to the decoder at each decoding time step?
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Why is it important to understand the encoder architecture before diving into the decoder?
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Study Notes
Overview of Transformer Architecture and Decoding in NLP
- The speaker is confirming if everything is working as expected for the class.
- The agenda for the class is to cover Transformers, the decoder module, and the BERT architecture.
- The speaker plans to provide pointers to Transformer code and walk through a real-world problem solved using a pre-trained Transformer.
- The architecture of an encoder in a Transformer includes self-attention, skip connections, add and normalize layers, and feed-forward layers.
- The encoder stack in a Transformer consists of multiple encoders, and the output of the final encoder is passed to each decoder.
- The decoder stack in a Transformer is responsible for generating the final output based on the input from the encoders.
- The decoder stack can have multiple decoders, and the final output of the decoders goes through linear and softmax layers.
- In decoding, the output of the encoder is used as keys and values for each decoder.
- The decoder generates one output per timestamp using the softmax layer.
- At each decoding time step, the input to the decoder is the output of the encoder and the previously generated output.
- The encoder is not re-run at each decoding time step.
- The speaker emphasizes the importance of understanding the encoder architecture before diving into the decoder.
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Description
Test your knowledge on the Transformer architecture and decoding in NLP with this quiz. Explore key concepts such as encoder and decoder stacks, self-attention, and the role of the softmax layer in generating outputs. Challenge yourself to understand the relationship between the encoder and decoder modules in a Transformer.
