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Subject: Re: Does Hiarcs 7.32 play better than Rebel against human?

Author: blass uri

Date: 05:00:44 05/25/99

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On May 25, 1999 at 06:17:56, Harald Faber wrote:

>On May 25, 1999 at 05:58:59, blass uri wrote:
>
>>>>I think that the commercial Junior is not best against humans but
>>>>the reason is not the fact that it is a fast searcher.
>>>>Uri
>>>
>>>What else is the reason?
>>
>>There are things in Junior that can be improved without changing the fact that
>>it is a fast searcher.
>
>Improving in most cases is adding knowledge. And this would make Junior slower.
>:-)
>
>>The evaluation function should be changed and my Junior5.4 has a different
>>evaluation function.
>
>Do you believe that changing and not adding would make an improvement?

I am sure about it.
The evaluation of Junior is based on some numbers in the program and changing
these numbers can improve Junior.

>
>>Junior clears the hash tables after every move so it cannot learn from previous
>>search and it is not because of the fact that it is a fast searcher.
>
>Whoops. Any reason for that?

I do not know.
Amir Ban said in the past that it is not important and cannot help much but I
think that he was wrong.
I told him ideas to carry information from search to the next search and I think
that it can help significantly in tactical positions.


>
>>I know that Junior5.4 has a different evaluation function(probably better) and
>>it is not slower.
>
>...
>
>>There are many things to improve also in Junior5.4 and again it has nothing  to
>>do with the fact that Junior5.4 is a fast searcher.
>
>Fast searching=little knowledge

1)I think that a little knowledge that is correct is better than a lot of
knowledge that is not correct.

2) I am not sure if fast searching =little knowledge
It can be also some tricks to do the same things faster.

>Where do you see improvements? By fine-tuning that little knowledge?

Yes and I am not sure if it is really a little knowledge.

I cannot compare it with other programs because I do not know what is the
knowledge of other programs.

I also think that the fact that you need less time to represent the knowledge of
Junior (assuming that it is the case and Junior is not faster because of program
tricks) does not imply that it is a little knowledge.

It is possible that Amir Ban is using knowledge that other programmers did not
think about and this knowledge is more important.

It is possible that by fine-tuning the "little knowledge" of Junior you can get
better program then by fine-tuning the Knowledge of Hiarcs7 even if both
programs look at the same number of nodes.

I do not say that it is the case and I simply cannot know because I have no idea
about the knowledge of Hiarcs7 (I know something about the evaluation function
of Junior but I am not going to discover it).

Uri



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