Hi, I have noticed the rankings of bots have shot up during the month of April. Seems like KGS is adjusting its ranking in the inflationary direction, closer to other popular servers, like Tygem.
One reason I could think of, is that users in KGS have declined, and KGS admin is probably trying to lure players with higher rankings. The reason why I thought so is that it is a prevalent business practice in Japan, and go salons which rates you with a higher dan/kyu attract more customers.

Or maybe they simply anchored the wrong players.

Maybe the bots really got stronger. Maybe it's just "noise."

I have recognized another ranking adjustment, I was pushed up by one rank overnight, I was stronger of the rank, but there were someway to go before crossing the rank border. I recognize a similar thing occuring in other players, they were stronger in their respective ranks but got pushed up by a rank this morning (21st Aug, Asia time).

Something is going on, but I wonder if it might be an error. I was 5k last time I played, but just logged in to find I'd been promoted to 4k.

But the rank graph says I should still be 5k:



Is this what it looks like when they change the anchor players? Or maybe there some other change being made?

Did you give it a full day to update?

There was nothing to update. I haven't played on KGS for at least a week or two.

This doesn't mean that your rank is not recalculated.

_________________
North Lecale

Look here

http://gokgs.com/graphPage.jsp?user=Blindgroup

and zoom on the right. The line is almost vertical.

Ah, yes. Seems from posts on r/baduk that they may have indeed adjusted the anchors yesterday. I'm surprised that KGS did not provide a notice to players on their website or something. Might have avoided some of this confusion.

When people discuss the KGS ranking system, some often have beliefs that I suspect are mistaken. So, I don't know how accurate the conclusions on r/baduk might be.

But, in this case, the ranking bumps seem to be widespread: From KGS chat, it was noticed several times Monday. The most reasonable explanation does seem to be a change in the anchors.

But, not all such changes are intentional. A few times, when things like this happened in the past and when Glue was superadmin, she told us, after looking into it, that some anchors had quit playing or some had become unstable. After these discoveries, she changed anchors, which would undo the rank bump.

I also noticed a change in my graph and I think every other player. A big bump, around 0.5 rank.

the graph on KGS server is also delayed compared to the graph on the KGS site, around 24-48 hours delay.

In the past, it already happened and generally there was a big correction of the ranks a few days or weeks later. I hope they will soon fix the delay between the graphs...

I would like to know if it's intentional or not. However it is not such a big change and the ranks seem still valid compared to others servers.

There was another rank adjustment, around one sixth of a stone around 30 September, 2018. This time, everyone, including the bots, was pushed downward. Taken together with 0.5 stone upward adjustment on 20 August, everyone should have been pushed up by one third of a stone, or 0.33kyu/dan.