alonforces's blog

Problems Rating — Why does the Update time vary so much?
By alonforces, history, 4 years ago, In English

Hi everyone,

So, I've noticed that sometimes the rating of a contest's problems is updated within a few hours, but sometimes it takes days. For example of it taking a long time, it's been 9 (!) days from the last Edu round, and still no ratings. Obviously given the current condition I can't give a proof that sometimes it takes a few hours or <= 1 day, but you all know that's the case.

Sometimes (I guess like now), after a few contests, all the recent contest's problems' ratings are updated at once.

Why do these things happen? Is it hard to calculate the ratings? Isn't it simply running a short script that calculates the formula that was mentioned a few times before?

I like knowing the ratings because I can infer from them a lot about how I did in a contest.

Does anybody know?

Thanks!

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4 years ago, # |
  Vote: I like it -91 Vote: I do not like it

why do you even care about the rating?

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    4 years ago, # ^ |
      Vote: I like it +71 Vote: I do not like it

    I like knowing the ratings because I can infer from them a lot about how I did in a contest.

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      4 years ago, # ^ |
        Vote: I like it -48 Vote: I do not like it

      this can be guessed(most of the time) by seeing the amount of solved during the contest.

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        4 years ago, # ^ |
          Vote: I like it +37 Vote: I do not like it

        Then the problem ratings become irrelevant after giving the contest.

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4 years ago, # |
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if you just want a good idea of what your performance was you can use cf rating predictor https://mirror.codeforces.com/blog/entry/50411, it's usually pretty accurate

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4 years ago, # |
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not sure..but maybe it takes time to check plagiarism

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4 years ago, # |
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Please update the ratings, it has been ages now.

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4 years ago, # |
  Vote: I like it +11 Vote: I do not like it

MikeMirzayanov could you enlighten us perhaps?

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