It is currently Fri Mar 29, 2024 7:39 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 3 posts ] 
Author Message
Offline
 Post subject: Commentary on the first game by Rob van Zeijst
Post #1 Posted: Thu Feb 06, 2014 3:57 pm 
Oza
User avatar

Posts: 2508
Liked others: 1304
Was liked: 1128
This match has inspired yet another great commentary, this one by Rob van Zeijst. In his announcement on Facebook, he prefaced the article and commentary with: "To all Go Associations and Go Lovers: If you want to publish this article in your own language for free, it is possible, but send me an email for the conditions: rob.yourteacher[at]gmail.com or send a message to Rob van Zeijst on Facebook. Thank you"

http://www.kiseido.com/printss/guliten1.html

_________________
Patience, grasshopper.


This post by daal was liked by 5 people: Bill Spight, Boidhre, Bonobo, cornucopia, happysocks
Top
 Profile  
 
Offline
 Post subject: Re: Commentary on the first game by Rob van Zeijst
Post #2 Posted: Thu Feb 06, 2014 11:03 pm 
Lives in sente

Posts: 923
Location: UK
Liked others: 72
Was liked: 479
Rank: 5 dan
KGS: macelee
I like the way the commentary is presented. Any idea how that web page was generated?

Top
 Profile  
 
Offline
 Post subject: Re: Commentary on the first game by Rob van Zeijst
Post #3 Posted: Mon Feb 10, 2014 6:10 am 
Oza
User avatar

Posts: 2408
Location: Ghent, Belgium
Liked others: 359
Was liked: 1019
Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
The best argument against odd numbered game series is that, if a 6-5 win in an 11 game series suffices to declare a winner, then 1 game would be sufficient too. Here's my proof:

Let X be the better player and Y the other player. Let p be the probability that X wins a game against Y (p>0,5).
The game series has a double purpose: find out who is X, but also get a better idea about p.
Our current estimate would be Lee Sedol being X and p is determined by the 18-17 score in his favor.
At 5-5, we would still estimate Lee Sedol being stronger but p is now determined by a 23-22 score in his favor.
If Lee Sedol wins 6-5, he clinches the title while the probability that they are actually of equal strength, or even Gu is slightly stronger, is higher than if Lee Sedol would win 1-0.

So it would be fairer to make Lee decisively stronger after 1-0 than after 6-5.
With 6-4 it's all different. Now the probability that Gu is better, given 24-21, is lower than given 19-17.

Similarly, it would be unfair to give Gu the title at a 6-5 win (being an overall 23-23 tie), than at a 1-0 win (18-18 tie), because chances they're equal are even increased after the 11 game series.

An even jubango only yields a winner if there are at least 2 games difference. The difference between the probabilities to indicate a wrong winner in the 6-4 case and the 6-5 case is quite high.

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group