Spent 3 hours trying to fix a broken transformer model pipeline

I was messing with a Hugging Face pipeline for a text classification project and kept getting this weird tokenizer mismatch error... turns out I forgot to update the model ID in the config file after swapping from BERT to RoBERTa. Took me an entire afternoon of debugging just to find a one-line fix. Has anyone else wasted a whole day on something this simple?

2 comments

2 Comments

henry_palmer241d ago

Exactly this. "That's not quite right, the issue was actually forgetting to change the tokenizer config too" - yep, that whole BERT to RoBERTa swap is a trap. Did the same thing a few months back. Spent an afternoon wondering why my model was acting up, only to realize I was trying to feed RoBERTa sentences through BERT's tokenizer. The weird token IDs were totally off. Sometimes the simplest things trip you up the worst.

fiona_sullivan291d ago

Forgot to update the model ID in the config file" That's not quite right, the issue was actually forgetting to change the tokenizer config too, not just the model ID. RoBERTa uses a different tokenizer than BERT so you have to swap both.