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Subject: Re: ECM98 Draft 2

Author: Amir Ban

Date: 15:08:17 04/30/98

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On April 30, 1998 at 12:59:08, Bruce Moreland wrote:

>
>On April 30, 1998 at 07:57:44, Howard Exner wrote:
>
>>What time do the programmers want to use for deleting the
>>easy ones? 10, 20, or 30 seconds (assuming like hardware)?
>
>Be very careful when you do this, and think about what you are doing.
>
>Here is what happened to me.
>
>I made a "hard" set out of ECM, I kept everything that wasn't solved in
>under X seconds, although I don't remember what X was.
>
>Now, of course, what I have just done is created a test suite that my
>program will perform worst on if it is run for under X seconds.  I will
>score zero on this suite, even a program that chooses randomly between
>candidate moves will score more than this.
>
>And if the suite is run for longer than X seconds, other programs will
>find some of the answers in less than X seconds, while mine won't find
>any in that time.  All of the problems that are easy for me and hard for
>others have been deleted, leaving problems that might be easy for
>others.
>
>So whatever programs you use to determine "easiness" are going to score
>in last place when you run the suite for real.
>
>bruce


I suggest this simple solution: Leave the suite intact, but sort it
according to approximate difficulty. You can use Ferret's solution time
as sort key.

Amir




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