Search found 147 matches

by clumma
Wed Dec 06, 2017 6:06 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Google's AlphaGo team has been working on chess
Replies: 203
Views: 66615

Re: Google's AlphaGo team has been working on chess

What I understand is that the neural network predicts the winning probabilities for each valid move in a position. Don't understand that these predictions will be good if it doesn't do a search but only simulation. So how is it possible that monte carlo simulation is better than an alpha beta searc...
by clumma
Wed Dec 06, 2017 5:51 pm
Forum: Computer Chess Club: General Topics
Topic: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo
Replies: 198
Views: 50969

Re: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo

Milos wrote:Days of Alpha0 on normal hardware are years away.
Sounds like you're conflating model training with running the program.
For chess it would take even more.
For chess it takes less.
But keep on dreaming, no one can take that from you.
Your case isn't advanced by being an asshole.

-Carl
by clumma
Wed Dec 06, 2017 5:32 pm
Forum: Computer Chess Club: General Topics
Topic: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo
Replies: 198
Views: 50969

Re: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo

4 hours my ass (pardon my french). Far fewer transistors and joules were used training AlphaZero than have been used training Stockfish. You can soon rent those TPUs on Google's cloud, or apply for free access now, so stop complaining. Furthermore it's an experimental project in early days and perf...
by clumma
Wed Dec 06, 2017 4:56 pm
Forum: Computer Chess Club: General Topics
Topic: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo
Replies: 198
Views: 50969

Re: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo

Lyudmil Tsvetkov wrote:Alpha had considerable hardware advantage
That comparison is not straightforward, but this claim does not seem to be true. SF had 64 threads. I'm not up on the latest scaling behavior of the engine but that has got to be near saturation.

-Carl
by clumma
Wed Dec 06, 2017 4:53 pm
Forum: Computer Chess Club: General Topics
Topic: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo
Replies: 198
Views: 50969

Re: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo

What is different is that alphazero's evaluation selects features of eval by itself (via a nerual network), while in the standard approach the programmer select features (e.g. passsed pawns, king safety, rook on open file etc) and just tunes the weights. The other difference is that Alpha uses MCTS...
by clumma
Wed Dec 06, 2017 8:22 am
Forum: Computer Chess Club: General Topics
Topic: AlphaZero beats AlphaGo Zero, Stockfish, and Elmo
Replies: 198
Views: 50969

AlphaZero beats AlphaGo Zero, Stockfish, and Elmo

A truly stunning result. Matthew Lai is a coauthor!

https://arxiv.org/pdf/1712.01815.pdf

-Carl
by clumma
Mon Nov 27, 2017 7:25 pm
Forum: Computer Chess Club: General Topics
Topic: AlphaGo's evaluation function
Replies: 14
Views: 3754

Re: AlphaGo's evaluation function

On a related note, I was watching Carlsen play blitz and bullet on chess.com the other day. His Elo advantage against other super-GMs increases at each faster time control, where calculation plays less and less a role. In interviews, he has repeatedly stated that his "intuition", and not calculation...
by clumma
Tue Sep 26, 2017 1:33 am
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 has been released
Replies: 263
Views: 78670

Re: Houdini 6 has been released

Current top engines (and in fact any regular chess engine developed over the last 70 years or so) have nothing to do with weakly solving the game. That's a very strong incorrect statement. Alpha-beta search was extensively used in the checkers proof, along with tablebases (which you know about) and...
by clumma
Mon Sep 25, 2017 7:23 pm
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 has been released
Replies: 263
Views: 78670

Re: Houdini 6 has been released

Why? Our philosophy has always been that book management (in particular the probabilities of choosing between the different moves available in the opening book) is done by the GUI that runs the engine. Each GUI has its own, different book format; if you’re using Arena, your book will be in the Aren...
by clumma
Mon Sep 25, 2017 7:06 pm
Forum: Computer Chess Club: General Topics
Topic: Houdini 6 has been released
Replies: 263
Views: 78670

Re: Houdini 6 has been released

Ok. Thanks. Hard to believe. Not too hard, since Zipproth has not published the format (to my knowledge). It could be discerned by examining Brainfish source code, but other engine authors should not be expected to do this. Then again, Robert might just as well make his own backsolved book with Hou...