Author: Dan Honeycutt
Date: 21:41:37 02/20/05
Go up one level in this thread
On February 20, 2005 at 04:46:59, Sune Fischer wrote: >On February 20, 2005 at 01:28:46, Dan Honeycutt wrote: > >>On February 19, 2005 at 17:08:23, Uri Blass wrote: >> >>[snip] >>> >>>The point is that using them in the discussion about the value of book is >>>irrelevant if the public book of shredder is not considered by you as a good >>>book. >>> >>>Uri >> >>I was not talking the public book. Recall my statement "This all supposes the >>authors are willing to let their tournament prepared books out, which I doubt" >> >>Perhaps I created confusion by saying "you could test" since you can't test if >>the book is not public. Let me rephrase. To prove or disprove Vincent's >>statement you would need to test using a program with a tuned book such as Diep >>or Zappa using Arturo's book or Shredder using Sandro's book. >> >>What Arturo thinks about Shredder's book has nothing to do with what I'm talking >>about. My sole point is that, IMO, Tord did not test with the type book Vincent >>described when he made his statement regarding the value of the book. > >Let's consider the four main types of book > >1. no book >2. wide random book >3. normal book >4. tournament book > >If Vincent says 1 vs 4 is 700 Elo and we assume the engine without book has no >learning, then I must agree with him. >All you need is to repeat the last line the engine lost, this is in fact more >than 700 Elo and it doesn't even require much of a book, just two lines of code. > >The other possible combinations won't give 700, especially not with learning, >some say 100 others say 200 but it's in that ball park. > >-S. >>Best >>Dan H. I understood 1 vs 4 but not necessarily a repeating a losing line where, like you say, the difference can be anything you want. More like engine X plays in a tournament with book 4 and achieves a rating of 2700 - has chances to win. If it enters the same tournament with book 1 it will achieve a rating of ~ 2000 - no chance to win. Dan H.
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