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Adding documentation for scaled rank. (#267)
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@ -22,15 +22,18 @@ Counterbalances the snowballing effect of votes over time with a logarithmic sca
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```
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Rank = ScaleFactor * log(Max(1, 3 + Score)) / (Time + 2)^Gravity
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Scaled_Rank = Rank / log(2 + Users_Active_Month)
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Score = Upvotes - Downvotes
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Time = time since submission (in hours)
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Gravity = Decay gravity, 1.8 is default
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Users_Active_Month = The number of users in a given community who have posted / commented in the last month.
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```
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- Lemmy uses the same `Rank` algorithm above, in two sorts: `Active`, and `Hot`.
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- Lemmy uses the same `Rank` algorithm above, in three sorts: `Active`, `Hot`, and `Scaled`.
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- `Active` uses the post votes, and latest comment time (limited to two days).
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- `Hot` uses the post votes, and the post published time.
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- `Scaled` is similar to `Hot`, but gives a boost to smaller / less active communities.
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- Use Max(1, score) to make sure all comments are affected by time decay.
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- Add 3 to the score, so that everything that has less than 3 downvotes will seem new. Otherwise all new comments would stay at zero, near the bottom.
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- The sign and abs of the score are necessary for dealing with the log of negative scores.
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@ -6,6 +6,7 @@ When browsing the frontpage or a community, you can choose between the following
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- **Active** (default): Calculates a rank based on the score and time of the latest comment, with decay over time
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- **Hot**: Like active, but uses time when the post was published
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- **Scaled**: Like hot, but gives a boost to less active communities
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- **New**: Shows most recent posts first
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- **Old**: Shows oldest posts first
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- **Most Comments**: Shows posts with highest number of comments first
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