Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: O(1) garbage

Author: Jesper Antonsson

Date: 16:19:11 05/13/01

Go up one level in this thread


On May 11, 2001 at 17:28:33, Dann Corbit wrote:

>Of course, everyone agrees by now.
>
>Chess is O(1), because if you get a big enough constant (nobody knows what it
>is) then it will be big enough to outweigh the time to run the program.  That's
>because the board is finite and the pieces are finite and the number of plies is
>finite (at some point, but at least 5948*2 as a bare minimum).  So, with all
>those finite inputs, the algorithm will eventually terminate.  Just wait until
>it does and pick that number plus 1 as your constant.  Q.E.D.  This camp (the
>)(1) camp) is clearly, and unmistakeably correct.
>
>Chess is O(exp(n)) because by definition, O(1) is O(exp(n)).  So there can be no
>argument.  This is by definition of the terms.  Hence, the O(exp(n)) camp is
>correct by definition, since *every* O(1) function is also an O(exp(n)) function
>{trivially}.
>
>Chess behaves {from ply to ply} in an exponential progression as to time.
>Whether this is important or not seems to depend on who you are talking to.
>That's how I do analysis, but since there is no ISO specification for complexity
>analysis, you can do it however you darn well please.
>
>So.  Since we all agree 100%, maybe it's time to just forget the whole thing.

Wise words. :-) Agreed.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.