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Update README.md

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  1. README.md +6 -3
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@@ -43,8 +43,8 @@ tokenizer = AutoTokenizer.from_pretrained("InstaDeepAI/nucleotide-transformer-50
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  model = AutoModelForMaskedLM.from_pretrained("InstaDeepAI/nucleotide-transformer-500m-human-ref")
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  # Create a dummy dna sequence and tokenize it
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- sequences = ['ATTCTG' * 9]
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- tokens_ids = tokenizer.batch_encode_plus(sequences, return_tensors="pt")["input_ids"]
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  # Compute the embeddings
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  attention_mask = tokens_ids != tokenizer.pad_token_id
@@ -60,8 +60,11 @@ embeddings = torch_outs['hidden_states'][-1].detach().numpy()
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  print(f"Embeddings shape: {embeddings.shape}")
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  print(f"Embeddings per token: {embeddings}")
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  # Compute mean embeddings per sequence
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- mean_sequence_embeddings = torch.sum(attention_mask.unsqueeze(-1)*embeddings, axis=-2)/torch.sum(attention_mask, axis=-1)
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  print(f"Mean sequence embeddings: {mean_sequence_embeddings}")
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  ```
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  model = AutoModelForMaskedLM.from_pretrained("InstaDeepAI/nucleotide-transformer-500m-human-ref")
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  # Create a dummy dna sequence and tokenize it
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+ sequences = ["ATTCCGATTCCGATTCCG", "ATTTCTCTCTCTCTCTGAGATCGATCGATCGAT"]
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+ tokens_ids = tokenizer.batch_encode_plus(sequences, return_tensors="pt", padding="max_length", max_length = max_length)["input_ids"]
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  # Compute the embeddings
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  attention_mask = tokens_ids != tokenizer.pad_token_id
 
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  print(f"Embeddings shape: {embeddings.shape}")
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  print(f"Embeddings per token: {embeddings}")
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+ # Add embed dimension axis
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+ attention_mask = torch.unsqueeze(attention_mask, dim=-1)
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+
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  # Compute mean embeddings per sequence
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+ mean_sequence_embeddings = torch.sum(attention_mask*embeddings, axis=-2)/torch.sum(attention_mask, axis=1)
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  print(f"Mean sequence embeddings: {mean_sequence_embeddings}")
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  ```
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