[Computer-go] AI Ryusei 2018 result

Hiroshi Yamashita yss at bd.mbn.or.jp
Tue Dec 18 14:19:55 PST 2018


Our program Natsukaze also used Leela Zero recent 700000 selfplay games
  to train DNN.
Ladder escape moves(4% of total games) are removed, and chasing not
  ladder(0.3%) also removed. But its DNN policy was weak, around CGOS 2100.

Maybe it is because current LZ selfplay use t=1 not first 30 moves but all moves.
I did not know this. I think this makes selfplay weaker +1000 Elo.

Switch to t=1 for all self-play moves, i.e., randomcnt=999

Hiroshi Yamashita

On 2018/12/19 2:01, Gian-Carlo Pascutto wrote:
> On 17/12/18 01:53, Hiroshi Yamashita wrote:
>> Hi,
>> AI Ryusei 2018 was held on 15,16th December in Nihon-kiin, Japan.
>> 14 programs played preliminary swiss 7 round, and top 6 programs
>>   played round-robin final. Then, Golaxy won.
>> Result
>> https://www.igoshogi.net/ai_ryusei/01/en/result.html
> It appears the 2nd place finisher after Golaxy was a hybrid of Rn and
> Leela Zero, using rollouts to compensate for Leela's network being
> trained with the "wrong" komi for this competition:
> https://github.com/zakki/Ray/issues/171#issuecomment-447637052
> https://img.igoshogi.net/ai_ryusei/01/data/11.pdf

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