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Subject: Re: NPS, EBF, Knowledge and Elo

Author: Ricardo Gibert

Date: 21:18:49 08/14/03

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On August 14, 2003 at 23:54:08, Dann Corbit wrote:

>On August 14, 2003 at 22:40:04, Ricardo Gibert wrote:
>
>>If doubling NPS (all else being equal) produces a roughly 40 to 75 elo strength
>>increase, then doubling knowledge produces how much elo strength increase?
>
>How do you measure doubling of knowledge?  I doubt if anyone can measure it.


Look up information theory on the web. Also, you might find it helpful to
consider EGTBs a model for all of chess.


>
>>Or do increases in knowledge follow a completely different type of relationship
>>to playing stength?
>>
>>What impact on NPS does a doubling of knowledge have? I know it slows it down,
>>but what is the relationship (a rule of thumb) between the 2? It is said that
>>adding knowldege in hardware does not exact a speed penalty, but can this really
>>be true? Or is the speed penalty simply less apparent?
>
>It may be possible to double knowledge and NPS at the same time.


By knowledge I meant chess knowledge as it pertains to evaluation. Another type
of chess knowledge is that pertaining to move ordering. Also, non-chess
knowledge to increase the efficiency of a program is another type knowledge and
the one the one you appear to allude to. All of these I think they need to be
considered separately. However, the one I'm most interested in is the knowledge
used in evaluation.


>
>>How much attention should a programmer give to lowering the EBF of his program
>>versus adding more knowledge?
>
>Just pick a single move.  EBF is one.   In other words, any reduction in EBF
>must be smart or it may do more harm than good.


Which is one of the reasons why I asked, "How much attention should a programmer
give to lowering the EBF of his program versus adding more knowledge?" I think
it is possible to answer my question a little bit intelligently ;-)


>
>>I'm curious about the different opinions programmers have on this topic. My
>>assumption is the answers to these questions can have a big impact on computer
>>chess program design.



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