Never understood this on Reddit either… What’s the difference between “Top” and “Hot”?
this post was submitted on 11 Jun 2023
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"Top" sorts by comments with the most upvotes. "Hot" are new comments that are receiving upvotes quickly (at least on Reddit).
"Hot" has some time-weighting, while "Top" is strictly ordered by karma
The beauty of open-source. We can view the code that does it. "Hot" is basically just a ratio of votes over time with some weighted factors involved.
Rank = ScaleFactor * sign(Score) * log(1 + abs(Score)) / (Time + 2)^Gravity