cosine distance instead of cosine similarity

[anna-charlotte]

Hello there,

I think there has been a mix up with cosine similarity and cosine distance. In the docs it says that you support cosine similarity. But instead the cosine distance is calculated (1- cosine sim.).
The resulting order is still correct, but when looking at the scores, they are incorrect. For instance, when computing the distance of vector x = [1.0, 1.0, 1.0, 0.0] to itself, the resulting score is 0.0. For the cosine similarity it would be 1. though instead of 0.

Could you adjust the formula?

[yurymalkov]

Hi @anna-charlotte,
Thanks for highlighting the issue! It seems like we can also rename cosine similarity to cosine distance to avoid this confusion.
Changing the formula will break previous code.

[anna-charlotte]

Hi @yurymalkov sure sounds good, too 👍