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Re: [Bug-gnubg] Rating and grading


From: Joseph Heled
Subject: Re: [Bug-gnubg] Rating and grading
Date: Tue, 11 Nov 2003 15:06:28 +1300
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031007

Assuming it's not a typo, It would be nice if you upgrade to 0.14 weights. It should play 20-30 rating points higher.

Joseph

Rod Roark wrote:
Hi all, I've been away from this list for a while.  Just
thought I'd post an update on ParlorBot's stats, after about
5 months in service running 0.13.0:

Number of samples  : 15992
Lowest             : 1856.69
Highest            : 2154.10
Mean               : 2005.42
Standard Deviation :   52.34

Again this is 2-ply play and cube decisions, "narrow" move
filters, 33% reduced.

Cheers,

-- Rod

On Monday 07 July 2003 12:00 pm, Rod Roark wrote:

On Monday 07 July 2003 10:40 am, Albert Silver wrote:

... GNU's attributed rating is supposedly based on the FIBS rating system
and is designed to give a rating that approximates what a user might get
at FIBS. However, it's self-attributed rating seems to be what
everything else is relative to and is at 2200. GNU does not have a 2200
rating at FIBS, not even by a margin. I think that lowering this to
2050, representing it's average, would make much more sense. As a
consequence, all its relative ratings should be lowered accordingly.

Here are the latest cumulative stats for ParlorBot, which
runs gnubg on FIBS with 2-ply checker play and cube
decisions, 33% reduced:

Number of samples  : 3692   (i.e. number of rated matches played)
Lowest             : 1880.71
Highest            : 2120.74
Mean               : 2002.35
Standard Deviation :   51.70

While the average rating used to be around 2030, there has
been a great deal of wandering from that.  Also I suspect
that a few clever FIBSters have learned to take advantage of
the bot's less-than-perfect evaluation in back games and
holding games.

-- Rod




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