Which K-factor should be used in case players have different K-factor values

Posted by DmitryN on Game Development See other posts from Game Development or by DmitryN
Published on 2012-06-01T17:58:45Z Indexed on 2012/06/01 22:51 UTC
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I am implementing a ranking system based on the Elo rating and cannot get a point about the K-factor. If two players with different skills and, therefore, different K-factors are playing, which exactly K-factor should be used when changing their ratings?

For example, player A has rating 2500 and K-factor 16 (probability ~75%) while player B has rating 2300 and K-factor 24 (probability ~25%). If player A wins, do I need to use 16 as K-factor for both players or 16 for player A and 24 for player B?

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