To use transformer encoders to generate contextualized embeddings for input sequences in text generation, you pass the input sequence through a pre-trained transformer model (e.g., BERT, GPT) and extract the hidden states. Here is the code you can refer to:

In the above code, we are using the following:
- 
Token Embeddings: 
- Each token in the sequence has a contextualized embedding capturing its meaning in context.
 
- 
Sequence Embedding: 
- Use the [CLS] token embedding (index 0) for overall sequence representation.
 
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Fine-Tuning: 
- You can fine-tune the transformer for better results when you do your text generation task.
 
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Applications: 
- Use embeddings as inputs to downstream models (e.g., for sequence generation).
 
Hence, you can use transformer encoders to generate contextualized embeddings for input sequences in text generation.