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18. Апреля 2009, 17:58:16
AbigailII 
Субъект: Re: Ratings
Undertaker.: For me, everybody must start each game rating with 1000 or 1200 points and each victory give between 10 and 50 points, in accordance with BKR opponent. For me would be the more correct rating calculation and would be necessary play many games and play against best players to be in the top.

IMO, that is really bad, and can cause really wild BKRs (like 3000+ BKR) easily. One should not only take into account the opponents BKR, but also how well estiblished that BKR is. If I play against someone who has 1500 more BKR points than me, but has only played a few games the last year, my BKR should not change much, regardless of the result. The point is that ratings should give an estimate of someones strength, but you can only estimate someone strength by comparing it to the strength of others. However, if you don't know someones strength very well (because someone hasn't played a lot), a result doesn't give much estimation of your strength, so your BKR should not change much.

In general, your BKR should change more the less established your BKR is, and the more your opponents BKR is. And it should change less the more established your BKR is, and the less established your opponents BKR is. And number of games finished is a poor estimation of how well established a BKR is. Number of recently finished games is a much better measurement than total number of games.

Ok, I'll say it one more time. Glicko.

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