Replace ColBERT with jina-colbert-v1-en about ragatouille

[bclavie]

Hey!

Thank you for flagging. I'm very short on time so diagnosing will be a little longer than usual, but the results shouldn't be drastically different. Initial evals showed relative parity between the two models, albeit only on 5-10 test cases.

I'm wondering if this is due to (1) a problem loading the model properly, (2) something with the rank() function (which uses the same internal functions as other, more tested functions, but it could happen).

What version of ragatouille and colbert-ai are you on? Jina ColBERT only loads properly with colbert-ai with >=0.2.19, previous versions of colbert-ai initialised weights wrong.

If that's not the issue, would you mind sharing some example code/documents where the issue occurs? Thank you!

[psykhi]

You are totally right, the upgrade brought the results back to where I was expecting them to be. Thank you so much! 🙏