this post was submitted on 20 Mar 2025
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I made a Lemmy instance with a custom algorithm that keeps only the top 20% most unique (=interesting?) posts. It does this by calculating a similarity score between every post on my instance and all posts that came before it. The top 80% of posts with the highest self-similarity get removed instantly.

The idea would be that this allows me to cut through the noise that's running through the communities, similar to how xkcd-signal attempted to do 20 years ago.

The instance is mostly meant for reading, not posting. So it has a very open federation policy (for now).

If anything, this is experimental. So please let me know what you think! You can see the type of stuff that gets removed in the modlog (https://lemmy.coffee/modlog).

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[–] [email protected] 3 points 2 days ago (1 children)

I've been through a few pages, could only find this post about Lemmy apps from [email protected] ; https://lemmy.coffee/post/6860?scrollToComments=true , with a single comment (mine).

No posts from [email protected], while it is much more active. Do you know why?

On the other hand, [email protected] , [email protected] and [email protected] seem to be doing fine

[–] [email protected] 4 points 2 days ago (2 children)

I added the larger communities before starting to remove posts, so there may be historical posts still hanging around. Maybe everything from BuyFromEU was deleted?

You can see the kind of stuff that stays best via homepage ALL > Top last N hours