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Subject: Re: Practical lesson for statistics

Author: Mike Byrne

Date: 18:49:40 12/29/03

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On December 29, 2003 at 15:47:05, Vincent Diepeveen wrote:

>On December 29, 2003 at 13:59:55, Mike Byrne wrote:
>
>
>
>>On December 29, 2003 at 13:23:33, Sandro Necchi wrote:
>>
>>>On December 29, 2003 at 12:46:47, Luis Smith wrote:
>>>
>>>>>I do agree too.
>>>>>
>>>>>Crafty has no realistic chances to win a WCCC.
>>>>>
>>>>>Sandro
>>>>
>>>>IMO only Bob can know this for sure.  I think people either over estimate the
>>>>commercials, or underestimate Crafty.  After all at the WCCC's only 11 games
>>>>were played, who knows what could have happened in that time, especially with
>>>>the kind of hardware that Dr. Hyatt could get.
>>>
>>>No, Bob does not know this.
>>>He is a "little outdated" on this matter.
>>>
>>>At the 2003 WCCC there were 3 favorites (Shredder, Fritz and Junior), 2 possible
>>>outsiders (Brutus and Diep).
>>>
>>>Based on my experience I gave these chances, before the tournament started:
>>>
>>>Shredder 35% (because of the slower hardware)
>>>Fritz    30%
>>>Junior   25%
>>>Brutus    7%
>>>Diep      3%
>>>rest      0%
>>
>>
>>The rest of the field is never 0%.  Any bookie can tell you that.  It might be
>>15 to 1, 30 to 1 -- even a 100 to 1 . but the chances are never "zero" - that
>>would make the payoff infinity.
>
>Wrong.

Vincent, I love you - you have not lost not one iota of ability to doublespeak.

I'll skip futher down.


>
>When Diepeveen (FM) 2300 plays Jonathan Schaeffer in chess at FIDE level (40 in
>2 + 20 in 1 + 15, you are correct that he has a 1% chance to win from me. It
>happens each so many years that i lose from a national master (2000 rated USCF).
>Statistically his chance is higher by the way than in reality. The only 2000
>rated player i lost from last 6 years a 2 hours game (so not fide rated even,
>only national) was a youth talent who was 2200 rated one rating list later (so
>underrated).
>
>The only reason Jonathan has a chance is because he can play without blundering
>away all pieces and he knows at which spot a piece is best. He has of course
>experience playing titled players in tournament games.
>
>Depending upon whether he has practiced past weeks, Jonathans chances will be
>1.5% or 0.5% practically spoken. This is simply not interesting. There is *some*
>chance. Chance is bigger when i'm feeling a bit sick of course.
>
>We can of course argue a long time about how high the chance is and we will
>never agree i bet. My argument will be he has less than 1% chance because USCF
>is inflated compared to the european ratings of today.
>
>However,
>
>Diepeveen - Eric van Reem (1803 national rated in Netherlands)
>
>That's a 0% chance for Eric. I will be motivated to my bones to beat someone
>like Eric of course.
>
>Now people will go start using statistics that i might blunder once in my life
>at move 7 away a piece or something, or that eric has some trick once in his
>life which he sees and he wins from me.
>
>All possible.
>
>When i claim to never lose, that's just a claim. At a certain level people
>simply give away too little pieces to ever lose from very low rated players.
>
>But still people will tell here: "well perhaps the chance is 0.0001 but it is
>possible that once in your life you blunder away that piece against a 1800
>rated".
>
>This argumentation is true of course.
>
>           VIRTUAL REALITY
>
>But now the reality. I ask the statisticians now: what is the chance that at an
>11 round match, Eric van Reem(taken many pictures from titled players) will beat
>Vincent Diepeveen(FM), perfectly healthy and playing for his life, in a 11 round
>match?
>
>But now let's say that i am not so healthy, despite feeling healthy, and by
>coincidence that week have a virus which kills my possibilities to play well.
>
>I bet statistics will say 0.00000000000000000000001 at most now.
>
>
>           REALITY
>
>The real reality is that in a world champs Eric van Reem isn't only playing FM
>Vincent Diepeveen. Reality is that everyone is motivated to win. First round he
>gets GM Alterman, then he gets Omid David Tabibi (didn't play much lately but
>plays very strong 2200+ hands down), then he gets 2343 FIDE rated Johannes
>Zwanzger and that for 11 rounds.
>
>Now the 0.00000000000000000000001 changes in 0 simply.
>
>Imagine next, a 11 round world championship humans. the participant list:
>
>1. Kramnik     2777 (note that his matches vs kasparov and such were never
>                     counted for FIDE rating, fide has boycotted that.
>                     Lucky kasparov)
>2. Ponomariov     2718
>3. Kasparov       2830
>4. Anand          2766
>5. Adams          2725 ENG
>5. Svidler        2723 (qualified at internet)
>6. Polgar         2722
>7. Ivanchuk       2710
>8. Sokolov, Ivan  2695 NETHERLANDS
>9. Ye, Jiangchuan 2681
>10.Lautier        2666 FRANCE
>11.Onischuk       2661 USA (highest rated US player who is active)
>12.Van Wely       2654 NETHERLANDS
>13.Seirawan       2621 USA
>14.Bu, Xiangzhi   2606 CHN  (Born: 1985-12-10)
>15.Diepeveen      2276
>16.Hyatt          1800 (local rating, FIDE starts at 2000 for international
>                        events)
>
>time control 40 in 2. rounds = 11
>
>If we play 11 rounds you are now claiming that number 15 and 16 have a tiny
>chance to win the world title FIDE?

No, show me where I claimed that - classic Vincent doublespeak. In the example I
used , somebody has picked the top 5 out of 14 and said the rest of the field
had 0%.  To use your example, the rest of the field is with Polgar on down - are
YOU now claiming that 6 through 16 have no shot.  It's not 0.0000000000000001%.

My God, that is biggest nonsense i ever heard!


>
>That is the biggest nonsense i ever heard!
>
>The chance is not 0.00000000000000000000000000000001
>The chance is 0 exactly.
>
>Just like the world champion FIDE 2004 will never be a player rated < 2600 for
>the very same reason.
>
>The only reason bookmakers give 1 to 30, is because they earn more giving 1 to
>30 than when they would give 1 to 100.
>
>>Besides, the tournamnament format , imo, is stupid.  An 11 round swiss with 14
>>or so participants? - they should make a "normal" swiss (say 5 rounds with 14
>>participants or a round robin - add just 2 more rounds with 14 participants.  I
>>forget exactly the number of rounds and participants, but I'm not far off.
>>
>>
>>>
>>>Do you really believe Crafty is better than the average rest? I do not. He would
>>>have to rely on too many bugs on the competition. This is not realistic.
>>>
>>>Of course everybody can say anything different, but in reality this is the
>>>situation.


The reality is this -- the performance ratings of WCCC at Graz.  The odds are
Crafty would have finished somewehre between List and Brutus according to the
latest SSDF results.  Crafty is just about 200 points behind Shredder on equal
hardware on the latest SSDF ratings.  Your beloved Diep finished nearly 400
points behind Shredder in this tournament and would have no shot against Crafty.
 That's reality.

1	Comp Shredder		2734	11
2	Comp Deep Fritz		2722	11
3	Comp Deep Junior	2632	10
4	Comp Brutus		2596	11
5	Comp List		2485	8
6	Comp Greenlight Chess	2415	10
7	Comp Diep		2344	10
8	Comp Quark		2323	10
9	Comp Chinito		2321	11
10	Comp Falcon		2262	10
11	Comp ParSOS		2253	11
12	Comp Deep Sjeng		2234	11
13	Comp Jonny		2228	11
14	Comp Nexus		2169	11
15	Comp Hossa		1947	10
16	Comp Ruy Lopez		1935	10

note _ calculation was based on actual games played - no forfeit wins - another
loving dose of reality.

love,

Michael



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