Life In 19x19

Elo ratings with no reference to the specific rating system are not actually comparable. It's like saying an object has a temperature of 150 degrees without mentioning the scale (Celcius, Kelvin, Fahrenheit or something else).

pookpooi wrote:4,5XX is still lower than 4,858 of AlphaGo Master, but they measure in different pool so...

Article says that it's "above 4500", which is ambiguous. And it says that it's higher level than AlphaGo Master. But I haven't found anything at all that talks about how they measured, etc., so I wouldn't consider the ELO number here authoritative in any way. Just mentioning it, because I saw it in a few articles.

gennan wrote:Elo ratings with no reference to the specific rating system are not actually comparable. It's like saying an object has a temperature of 150 degrees without mentioning the scale (Celcius, Kelvin, Fahrenheit or something else).

Agree that there's not much meaning.

By the way, I read that, since Lee Sedol won the first game, his next game on the 19th will be without the 2-stone handicap (they're adjusting as they go based on who wins or loses). Third game will be on the 21st.

Here's an even game Handol played vs Shin Jinseo on 23rd Jan this year, from https://youtu.be/xeSbHWbHA98. Looks like it played a pretty solid game, just waiting for Shin to make mistakes (e.g. not hane d13) and it didn't make any of equivalent magnitude so won smoothly.

The second game was a smooth win for Handol.

I haven't seen the game, yet, but I read an article about the second game. One pro said that Lee Sedol's moves around 31 and 33 were bad.

Looks like they'll go back to 2 stones for the 3rd game (with white having 7.5 komi, though). Lee Sedol commented that, for the last game, more than winning, he'd like to play in his own "Lee Sedol style".

Yeonwoo's review

Do we know anything about the technology behind HanDol? Is it another "zero" bot similar to AlphaZero or LZ? Are there any new methods being used? What sort of hardware is it running on?

Handol won the last game, giving 2 handicaps but having komi. In the first corner fight it had a blindlspot which meant it thought it was killing Lee and already winning but Lee had a tesuji to save the day. But then it gradually caught up, was even by around move 100 and Lee far behind at the end when he resigned.

Xela, from Yeonwoo's videos Handol is a Zero bot without human games in its training. And had 2 million playouts on Lee's 78 in first game so a powerful machine.

Just catching up on this news, and I read an article about the 3rd game and an interview Lee Sedol gave afterwards.

The sentiment of the article was that Lee Sedol said that, though he lost, it was hard to acknowledge that Handol was really that strong at handicap go. He noted that, though Handol came up with some moves he didn't think of in the middle, if it were one of his junior pro colleagues (like kohai in Japanese), they probably could have won the third match. He also suggested that Handol seemed weaker than some Chinese AI (though, it wasn't clear exactly which one he was referring to).

He also reflected on his life as a go player. He thanked all of those involved in organizing the event, his (passed away) father, his mother, older brother, and older sister. He noted that, he was at around the halfway point in his life; a turning point. For this half of his life, go has continued to have meaning. And, if he's born again, he can't guarantee that he'd become a pro go player, merely that he'll play go. In playing go, he met a lot of good people, he said. He said to his fans who showed/gave him love that he didn't know how to thank them enough.