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Subject: Re: Behind deep Blue

Author: Vincent Diepeveen

Date: 07:08:55 10/21/02

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On October 19, 2002 at 21:44:49, Fernando Villegas wrote:

However in the artificial intelligence publication we
can conclude that the number of patterns in deep blue was
very limited. About a bit less than Fritz has.

We talk about 40-60 patterns. Each pattern of course in hardware
referenced by an array. Starting in advance already with 768
adjustable parameters.

However let's skip the 'adjustable parameter count'. One can create
as many as you like as each parameter can be referenced by an
array, bigger or smaller.

More important is the number of patterns. THAT number which is
the crucial factor, is obviously very limited to 40-60 at most.

The reason why i focus upon the number of patterns is because in
software not referencing an array but a single value for a pattern
is way faster in general.

So the way to compare is the number of patterns.

In my viewpoint what deep blue has is very little.

The play indicates that clearly.

It doesn't know a thing about doubled pawns, good/bad color of the
bishops (fritz doesn't either). Aggressive towards opponents king.

Last but least i need to note that Hsu can't play chess at all.

Even if it had 2 patterns he would call it 'a lot of knowledge'.

Just like i call my draughts (international 10x10 checkers) program
very knowledgeable.

>I have just finished the book by Feng-Hsiung Hsu. In just a shot, from after
>lunch to this time, meal time. Very interesting. You cannot stop he reading.
>First big impression: if this guy and his team had worked just one year more on
>Deep Blue, Garry has been crushed to ashes, to atoms. Yes, because once and
>again Deep Blue appears as an uncomplete device full of bugs and problems,
>almost all the time performing with scarcely some room to test and smooth the
>edges. Second great impression: contrary to common wisdom, Db has a lot to do
>with knowledge and evaluation, not just searching power. Third impression: Gary
>was and perhaps still is a wheening asshole.
>
>Be bye
>Fernando



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