Author: Uri Blass
Date: 01:18:54 08/15/03
Go up one level in this thread
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? > >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? > >How much attention should a programmer give to lowering the EBF of his program >versus adding more knowledge? I believe that lowering the EBF is more important. > >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. I believe that big evaluation is not very important for the low levels(weaker or equal to Junior8) and it is only important to have some important cheap things(Junior8 does not use most of its time in evaluation). Big evaluation may be important at higher level than Junior8 but I am still not at that level and I do not know if there is somebody at that level. I have not only a poor evaluation but a bad order of moves and poor extension and pruning rules. When I say bad or poor I do not compare it with other programs but with what I expect to have in the future. Inspite of all these problems movei is a dangerous opponent for every program and even the best programs of WBEC cannot get 100% against it. Deep Sjeng1.5 could only get 2.5-1.5 in WBEC(including a loss when movei started 1.e4 c6 2.d4 d6) and Aristarch4.21 could get only 3-1(2 draws). I guess that the reason for the fact that movei is a dangerous opponent for almost every program is that all programs suffer from poor pruning, poor extensions,poor order of moves and poor evaluation. Uri
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