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Computer Go Programs |
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Name |
Country |
Introduction |
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Zen |
Japan |
- Developers: Yoji Ojima (independent
programmer) and Hideki Kato (AI
researcher).
- Algorithmic Principles: MCTS with
hash-coded large-patterns of expert
knowledge of the game of Go and very
smart, sequence-like simulations.
Dynamic-komi and network parallelism are
also used.
- Features: A carefully tuned
combination of significantly improved
sequence-like simulations and the
large-patterns of Go knowledge. The
network parallel algorithm is also our
original
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CGI Go Intelligence (CGI) |
Taiwan |
- Developers: Ti-Rong Wu, Ting-Fi Liao, Guan-Wen Chen, Chung-Chin Shih, Li-Cheng Lan, Ting-Chu Ho, and I-Chen Wu.
- Algorithmic Principles: Monte-Carlo Tree Search with RAVE, large-pattern by machine
learning, and dynamic komi.
- Features: CGI uses the framework of Amigo, mainly including parallel processing. Amigo designed by Liao (as his thesis) has a general MCTS framework for all games.
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Aya |
Japan |
- Developers: Hiroshi Yamashita
(Engine Programmer).
- Algorithmic Principles: Mote Carlo
Tree Search.
- Features: Aya is Go playing program since 1995. First 10 years, I teached many Go knowledge to Aya, but its strength had stopped 8k. In 2006, monte-carlo method appeared in Computer Go world. I tried a bit. Surprisingly, Aya became from 8k to 2k quickly. Current Aya is 3d and 4d(blitz) on KGS. Aya uses 120,000 pattern from 3x3 to 10x10. Playout style is similar to CrazyStone. Playout chooses one move from all available moves. Each move has value, and bigger value move tends to be selected. Playout uses many Go knowlegde, like nakade, seki, half eye, and easy ladder. Semeai, caputre race is the biggest weak point. Aya understands 2 liberties vs 3 liberties, but don't know 3 liberties vs 4 liberties.
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Machine Specification |
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Name |
Country |
Content |
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Zen |
Japan |
- Zen runs a mini cluster of a dual 12-core Xeon E5-2690 v3@2.6 GHz 32 GB RAM, a dual 10-core Xeon E5-2690 v2@3 GHz 32 GB RAM, a dual 6-core Xeon X5680@3.3 GHz 12 GB RAM and an 8-core Core i7 5960X@3 GHz 16 GB RAM computers, connected via a GbE
LAN. 64 cores total.
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CGI |
Taiwan |
- 8 x 3 x AMD Opteron 6174/2.2 GHz (ALPS system by Acer)
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Aya |
Japan |
- Amazon EC2, c4.8xlarge, Xeon E5-2666 v3, 2.9GHz, 18cores, and 36 threads.
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