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Re: [Bug-gnubg] Confused
From: |
Lucas |
Subject: |
Re: [Bug-gnubg] Confused |
Date: |
Fri, 12 Jun 2015 11:35:18 +0200 |
Hi Ian
To say that gnubg expert level plays less then worldclass or makes mistakes
might not be true
I did run on local disk expert against worldclass 1000 5 point matches the
result was
worldclass had a winrate of 50,2 % . To me that 0,2 % might be due to luck.
I agree that expert plays sometimes a different move compared with
worldclass on the same
position etc
Assuming that a higher level of gnubg wil play better then lower level is
not true.
Last year i tested using Fibs,( were i did in the past 8 bots), 2 bots
one set to play Worldclass and the other at grandmaster
so 2 ply against 3 ply
they played 3000 5 point matches
Worldclass the lesser setting had a winrate of 55 %
I mailed about it with Micheal Petch
one of the maintainers of gnubg and
he confirmed that indeed worldclass plays better the Grandmaster
Greetings
Lucas
-----Oorspronkelijk bericht-----
From: Ian Shaw
Sent: Thursday, June 11, 2015 6:22 PM
To: Michael Brennan ; address@hidden
Subject: Re: [Bug-gnubg] Confused
Hi Michael,
Welcome to GNU Backgammon.
1) Dice are no respecter of ability! Even the best players can be defeated
by bad rolls. Look at the Luck ratings to see how gnubg thinks it played
out.
Gnubg thinks it made no errors because it is using itself as the best judge
of perfection!
If you ask gnubg to play on Expert Level but analyse on World Class, you
will start to see some errors creep into its game.
2) It depends on how beginnerish you are.
According to the FIBS Rating Calculator at
http://www.netadelica.com/bg/fibscalc.html a player with a 500 point Elo
advantage should win a 13-point match about 89% of the time. This increases
to 93% for a 21-pointer.
You can play with the calculator yourself for other scenarios. (The
experience fields should be set to at least 400 for both players.)
I hope this helps.
Ian Shaw
-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf Of
Michael Brennan
Sent: 11 June 2015 00:19
To: address@hidden
Subject: [Bug-gnubg] Confused
I would be obliged for some help on the following. Please forward it on to
someone who could answer if it arrives at the wrong destination.
gnubg describes my ability as a “beginner" - fair comment. However in a 13pt
match, I beat gnubg 13-6. The analysis described gnubg’s ability as
“supernatural" and indicated that it made no errors.
I Have two queries in relation to this
1. How come gnubg lost?
2. How many points should a match be in order to ensure that gnubg wins
every time against a beginner?
Regards
Michael Brennan
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- [Bug-gnubg] Confused, Michael Brennan, 2015/06/11
- Re: [Bug-gnubg] Confused, Ian Shaw, 2015/06/11
- Re: [Bug-gnubg] Confused,
Lucas <=
- Re: [Bug-gnubg] Confused, Ian Shaw, 2015/06/12
- Message not available
- Re: [Bug-gnubg] Confused, Ian Shaw, 2015/06/12
- Re: [Bug-gnubg] Confused, Michael Petch, 2015/06/12
- Re: [Bug-gnubg] Confused, Ian Shaw, 2015/06/15
- Re: [Bug-gnubg] Confused, Michael Petch, 2015/06/15
- Re: [Bug-gnubg] Confused, Ian Shaw, 2015/06/15
- Re: [Bug-gnubg] Confused, Philippe Michel, 2015/06/15
- Re: [Bug-gnubg] Confused, Ian Shaw, 2015/06/16
- Re: [Bug-gnubg] Confused, Philippe Michel, 2015/06/22
- Re: [Bug-gnubg] Confused, Philippe Michel, 2015/06/12