AlphaGo vs Lee Sedol, who will win?

Higher level discussions, analysis of professional games, etc., go here.

Who will win: Lee Sedol or AlphaGo?

Lee Sedol crushing victory (5-0)
29
26%
Lee Sedol comfortable victory (4-1)
35
31%
Lee Sedol close victory (3-2)
16
14%
Too close to call
10
9%
AlphaGo close victory (2-3)
5
4%
AlphaGo comfortable victory (1-4)
12
11%
AlphaGo crushing victory (0-5)
6
5%
 
Total votes: 113

idontgetit
Dies with sente
Posts: 113
Joined: Wed Aug 03, 2016 2:35 pm
GD Posts: 0
Has thanked: 1 time
Been thanked: 11 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by idontgetit »

lucibel wrote:
idontgetit wrote:
lucibel wrote:Have anyone took a look at those games where AlphaGo plays against itself? They are truly remarkable games. Looks like it has a totally different kind of consciousness or something. No human could play like that.
Yes, I have. What's so remarkable about them? I've seen plenty of 8ks play like that.

(Not saying AlphaGo is 8k, simply that I'm not anywhere near strong enough to really appreciate it)
Well I don't know any top level human pro players who play moves that look like they were played by 8kyu. And when AlphaGo plays them, they are not just random 8kyu moves but they really work as the commentaries show. That's quite remarkable as far as I can see.

We used to play a rank guessing game on KGS, where a player would find a random game, play 50-100 moves, and have the other people guess what rank the players were. Many times people guessed pro games were 5k or 8k or 1-2d. It's amazing how bad we are at guessing ranks, even relatively more experienced players who are stronger and played the guessing game quite often.
Uberdude
Judan
Posts: 6727
Joined: Thu Nov 24, 2011 11:35 am
Rank: UK 4 dan
GD Posts: 0
KGS: Uberdude 4d
OGS: Uberdude 7d
Location: Cambridge, UK
Has thanked: 436 times
Been thanked: 3718 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Uberdude »

idontgetit wrote: We used to play a rank guessing game on KGS, where a player would find a random game, play 50-100 moves, and have the other people guess what rank the players were. Many times people guessed pro games were 5k or 8k or 1-2d. It's amazing how bad we are at guessing ranks, even relatively more experienced players who are stronger and played the guessing game quite often.
That reminds me, user 'maf' made a nice site where you can play this guess the players' rank game:
https://kyudan.net/
Tumtumtum
Beginner
Posts: 18
Joined: Sun Jan 31, 2016 1:58 am
GD Posts: 0
Been thanked: 2 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Tumtumtum »

Uberdude wrote:
idontgetit wrote: We used to play a rank guessing game on KGS, where a player would find a random game, play 50-100 moves, and have the other people guess what rank the players were. Many times people guessed pro games were 5k or 8k or 1-2d. It's amazing how bad we are at guessing ranks, even relatively more experienced players who are stronger and played the guessing game quite often.
That reminds me, user 'maf' made a nice site where you can play this guess the players' rank game:
https://kyudan.net/
The problem with that site is you should always just guess 5d. They should give you a set of nine games each one representing one rank from 1 to 9 dan.
Uberdude
Judan
Posts: 6727
Joined: Thu Nov 24, 2011 11:35 am
Rank: UK 4 dan
GD Posts: 0
KGS: Uberdude 4d
OGS: Uberdude 7d
Location: Cambridge, UK
Has thanked: 436 times
Been thanked: 3718 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Uberdude »

Tumtumtum wrote:
Uberdude wrote: That reminds me, user 'maf' made a nice site where you can play this guess the players' rank game:
https://kyudan.net/
The problem with that site is you should always just guess 5d. They should give you a set of nine games each one representing one rank from 1 to 9 dan.
Eh? Guessing 5d as the mid-point is a good strategy if you have no skill in evaluating the strength of the players (and assuming the distribution of games in the database is uniform across ranks 1d - 9d), but if you do have some skill in that then guessing what you think will have a lower variance from the correct answer that always guessing 5d.
Tumtumtum
Beginner
Posts: 18
Joined: Sun Jan 31, 2016 1:58 am
GD Posts: 0
Been thanked: 2 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Tumtumtum »

Uberdude wrote:
Tumtumtum wrote:
Uberdude wrote: That reminds me, user 'maf' made a nice site where you can play this guess the players' rank game:
https://kyudan.net/
The problem with that site is you should always just guess 5d. They should give you a set of nine games each one representing one rank from 1 to 9 dan.
Eh? Guessing 5d as the mid-point is a good strategy if you have no skill in evaluating the strength of the players (and assuming the distribution of games in the database is uniform across ranks 1d - 9d), but if you do have some skill in that then guessing what you think will have a lower variance from the correct answer that always guessing 5d.
I always was terrible in math and school in general, but to me it seems like this: from a 5d point of view, 1d is 4 wrong and 2d is 3 wrong and so on. 20 in total. 20/9= 2,22. Uberdude's average offset is 3,86.
Uberdude
Judan
Posts: 6727
Joined: Thu Nov 24, 2011 11:35 am
Rank: UK 4 dan
GD Posts: 0
KGS: Uberdude 4d
OGS: Uberdude 7d
Location: Cambridge, UK
Has thanked: 436 times
Been thanked: 3718 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Uberdude »

Check the user mr5d I just made using your strategy, ranked below Uberdude on the 95% confidence interval offset that sorts the leaderboard. Also Uberdude was quite a lot better on the first dozen or so guesses when I spent a long time trying to judge the level but then my score went down when I started doing it quickly. Maybe I'll make a new serious-guess-only one if I have time later and try to get a good score.

Edit: Sorry, after typing above did one wrong guess on mr5d in new tab without logging out (with 5 out and 0 out, got my colours reversed!) before that the 95% was 4.86 iirc
Tumtumtum
Beginner
Posts: 18
Joined: Sun Jan 31, 2016 1:58 am
GD Posts: 0
Been thanked: 2 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Tumtumtum »

Uberdude wrote:Check the user mr5d I just made using your strategy, ranked below Uberdude on the 95% confidence interval offset that sorts the leaderboard. Also Uberdude was quite a lot better on the first dozen or so guesses when I spent a long time trying to judge the level but then my score went down when I started doing it quickly. Maybe I'll make a new serious-guess-only one if I have time later and try to get a good score.

Edit: Sorry, after typing above did one wrong guess on mr5d in new tab without logging out (with 5 out and 0 out, got my colours reversed!) before that the 95% was 4.86 iirc
I also tried this and got to 3,57 average offset. I would like to know what was wrong with my math.
Uberdude
Judan
Posts: 6727
Joined: Thu Nov 24, 2011 11:35 am
Rank: UK 4 dan
GD Posts: 0
KGS: Uberdude 4d
OGS: Uberdude 7d
Location: Cambridge, UK
Has thanked: 436 times
Been thanked: 3718 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Uberdude »

Looks like the "average offset" is the mean of the total offset in each pair of guesses. So if you guess 5d 5d and it is 2d 1d then total offset is 3 + 4 = 7.
idontgetit
Dies with sente
Posts: 113
Joined: Wed Aug 03, 2016 2:35 pm
GD Posts: 0
Has thanked: 1 time
Been thanked: 11 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by idontgetit »

the best pair is 4d.

I didn't check your math, so there could be multiple points of failure, but one thing you didn't take into account of is the number of games they have on record for each rank. They have a significantly fewer number of 9d games than 4d games, for example.
Tumtumtum
Beginner
Posts: 18
Joined: Sun Jan 31, 2016 1:58 am
GD Posts: 0
Been thanked: 2 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by Tumtumtum »

idontgetit wrote:the best pair is 4d.

I didn't check your math, so there could be multiple points of failure, but one thing you didn't take into account of is the number of games they have on record for each rank. They have a significantly fewer number of 9d games than 4d games, for example.
They said something about it being equal probability anyway.
alphaville
Dies with sente
Posts: 101
Joined: Sat Apr 22, 2017 10:28 pm
GD Posts: 0
Has thanked: 24 times
Been thanked: 16 times

Re: AlphaGo vs Lee Sedol, who will win?

Post by alphaville »

Uberdude wrote:
belikewater wrote:In a news article I saw Lee quoted as saying that AlphaGo played a move "I thought was almost impossible to play". Does anyone know which move he was referring to?
My guess is it was r10, the invasion on the right side. That impressed Sweetrip 9d on KGS (Andy Liu I think) who said something like no pro would dare to play such a move, though Zhou Ruiyang 9p apparently suggested it.
Does anyone have either a SGF or a link to the recorded video commentary that Gu Li and Zhou Ruiyang did live during the Lee Sedol match?
Post Reply