[Bug]: Scaled sort only shows posts created in last hour

LemmyNet / lemmy

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[Bug]: Scaled sort only shows posts created in last hour #4608

Open Nutomic opened 5 months ago

Nutomic commented 5 months ago

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Summary

Effectively it works as another "new" sort, instead of fulfilling the stated goal of showing popular posts from smaller communities. It seems the algorithm needs some adjustment.

See https://lemmy.ml/?dataType=Post&listingType=All&sort=Scaled

cc @dessalines @dullbananas

Version

0.19.3

dullbananas commented 5 months ago

The scheduled task to update scaled ranks should also be looled at

dessalines commented 5 months ago

I think its working as intended, bc when I change the filter to Local, it did find many posts older than an hour.

You're not going to see many older posts with Scaled + All, because there's so many small communities with new posts that its giving a boost to.

Die4Ever commented 5 months ago

I do think Scaled is pretty good for the Subscribed feed, I use that as my default. Although I do think it could favor new posts a little less, and maybe Hot could use the same tweak

Somewhat related issue https://github.com/LemmyNet/lemmy/issues/4471

dullbananas commented 5 months ago

There's a small chance that this happens because the batches for updating the ranks use published instead of id, and a newly inserted post is only guaranteed to be the most recently published post if it's local.