RBerenguel wrote: ... I'm starting with the assumption that most solid questions are between 3k-5k, and as such, answering them correctly tends towards 3k-5kyushness.
That is the mathematical mistake. Answering any question correctly should make your rating move upward (tend toward +infinity). Of course the gain will not be large unless the question is difficult for your current rating. But a decrease indicates a problem with the rating algorithm.
For the mathematically inclined, think of Bayes' theorem. We have a prior probability (rating distribution based on previous answers), plus a new piece of information (correct answer to a problem at a particular difficulty level), and we want to derive a new probability (rating distribution based on all answers). How does inclusion of the new information alter the probability? The new information is consistent with any rank above the difficulty of the problem, but actually becomes more likely as that rank increases, even for ranks well above the problem difficulty. So the new distribution must be pulled toward higher ratings by the inclusion of the new information.
Yes, the thing is I wasn't thinking of it in terms of probability but more in terms of a dynamical system. (old) Professional deformation, I guess
Geek of all trades, master of none: the motto for my blog mostlymaths.net
You have answered 3319 positions. By my estimate your rank is between 5.0 Kyu and 4.9 Kyu.
Still about ten stones off (and no, I’m NOT 5 dan ) and doesn’t seem to change, no matter how many “wrong” moves I make <shrug> it’s still fun, though, and I like the illusion that it improves my play
Greetings, Tom
“The only difference between me and a madman is that I’m not mad.” — Salvador Dali
I'm about 10k kgs, after 1800 answered it has me pegged at 4.9k as well. Hmmmmm. I am digging it though, the questions presented seem suitable to my level, and I am learning some shape and fighting techniques.
foe wrote:I'm about 10k kgs, after 1800 answered it has me pegged at 4.9k as well. Hmmmmm. I am digging it though, the questions presented seem suitable to my level, and I am learning some shape and fighting techniques.
I'm 9k and Ootakamoku will not budge from 4.9-5 as well.
So … can you actually solve problems there? For me it is online, yes, but it doesn't show me any problems, instead I still get the message shown above.
“The only difference between me and a madman is that I’m not mad.” — Salvador Dali
So … can you actually solve problems there? For me it is online, yes, but it doesn't show me any problems, instead I still get the message shown above.
Oh , that's correct, same problem for me...
Converting the book Shape UP! by Charles Matthews/Seong-June Kim
to the gobook format. last updated april 2015 - Index of shapes, p.211 / 216
However, I tried to get in touch with the owner a couple of months ago on L19 and couldn't. I think the project might be abandonware... pity, it's a very cool thing.
Confucius in the Analects says "even playing go is better than eating chips in front of tv all day." -- kivi
)
, that's correct, same problem for me...