[Request] Additional filter for items

[ds2268]

Hi @benfred,

Can you add in the official library the option for recommend method to accept additional list of items, that you don't want to include in the recommendations. Therefore we would still get for example top N items (excluding the items from given list) instead of filtering afterwards where you prune given recommendations and get less than the number of requested recommendations.

Thanks!

[benfred]

This shouldn't be too hard to add - we are already filtering out items that the user has viewed from the result set: https://github.com/benfred/implicit/blob/master/implicit/als.py#L88-L89 and extending that for other items should be pretty easy.

[ds2268]

@benfred I agree, I can prepare PR because I need this functionality anyway :)

[ds2268]

@benfred thank you for your fast response. It is possible to make this version accessible through pip repository. I guess new version tag is needed for this.

[benfred]

You're right - the version needs updated and I need to push changes to pypi.

I'll do this this weekend - I won't really have an opportunity before tomorrow night.

[benfred]

I've bumped the version number here, and pushed to pypi: a50fb1b