MikeMirzayanov's blog

Changes in Contribution Calculations
By MikeMirzayanov, 11 years ago, translation, In English

Recently we’ve changed the contribution formula. Now it reflects the current social activity, that’s why all votes for posts and comments are divided by two every 180 days. On the one hand it helps to distinguish the currently active Codeforces members, on the other hand it makes the contribution top more dynamic and opened for the newcomers.

For example, now Egor is the leader of the contribution top because of the (mostly) many interesting posts about ACM-ICPC World Finals. But it looks like 9 months after the World Finals, he can loose the first place.

Also I’ve made some changes with the votes:

  1. Now the negative score is not shown (just 0) if it is in range [-5,-1]. I did it because many of you downvote just because you see the negative score.
  2. Visualization of vote in comments.
  3. Changed some rules to transform votes to contribution, but it is a monotonic function anyway.
  4. A comment becomes partially transparent if it has -10 or less (it was -5).
  5. A comment becomes hidden with the message about too negative feedback if it has -25 or less (it was -10).

I hope you we will do same changes as in items 1-2 for posts.

  • Vote: I like it
  • +190
  • Vote: I do not like it

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11 years ago, # |
  Vote: I like it -26 Vote: I do not like it

nooo! i was -79 :D please help me ,i need to be -79 again :D

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11 years ago, # |
  Vote: I like it -12 Vote: I do not like it

Hi!:)
After these useful changes, please fix this problem Mike! : http://codeforces.com/blog/entry/7916
Thanks!

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10 years ago, # |
  Vote: I like it -16 Vote: I do not like it

Why do the value of mine is -1? I wonder why it become -1? What's the rule of it?

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    10 years ago, # ^ |
      Vote: I like it +45 Vote: I do not like it

    It's probably because your contribution to the community so far consists of one one-line post (rated -5) written in a language that most people here don't know.

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10 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Is it possible that you publish the function that maps votes to contribution?

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    10 years ago, # ^ |
      Vote: I like it +4 Vote: I do not like it

    Do you believe it is that important? You want to mathematically develop the best strategy to get into top of contributors? Just add some more posts to one which you already have... ;)

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      10 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      I don't want to develop any strategy, I'm just curious about it.

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7 years ago, # |
  Vote: I like it -20 Vote: I do not like it

I think making negative score visible to the author(only) would be a better idea.

Reason is most of the users, when they write their first comment, don't know about rule 1[-5,-1] and when someone downvotes them, suddenly contribution becomes negative(-1).

They click on the comments to see if someone downvoted them but number of downvotes shown are zero (if in range [-5,-1]) and they get confused(why their contribution went down?)

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