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Subject: Re: Do programmers mean to the same thing when they say nodes?

Author: Bas Hamstra

Date: 07:09:57 09/06/99

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On September 06, 1999 at 07:41:01, blass uri wrote:

>On September 06, 1999 at 07:05:03, blass uri wrote:
>
>>I know that nodes in some programs(like Junior) include illegal moves and my
>>question is if the same illegal moves are defined as nodes by all the programs.
>
>I am not sure about the definition of nodes about Junior but I am sure that
>Junior generate illegal moves and it discovers that they are illegal only by
>search so I guess that it does not count only legal moves as nodes.
>

Another thing is: the natural way to count nodes is to put a nodes++ in the
search and in the qsearh. But then you double count the leafs of the normal
search (same node, same depth in search and qsearch).

But: does it make sense to compare NPS between programs? Suppose one program
uses SEE pruning and the other program not. Now the program without SEE will
have a higher NPS. But does this comparison make any sense?



Regards,
Bas Hamstra.







>Uri
>
>>
>>If the answer is negative then we cannot say that one program is a faster
>>searcher only because it searches more nodes per second.
>>
>>We need a clear definition of nodes to compare.
>>
>>Uri



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