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Subject: Re: ECM errata

Author: Don Dailey

Date: 11:28:32 01/19/98

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Hi Bob,

Everything you said sounds good to me.  I like Bruce's idea of doing
a first pass to eliminate the easy ones, then we are working with
a smaller set instead of almost a thousand.  The 3 or 4 of us will
quickly agree on "too easy" and get it down quickly to a manageble
number.

I just boosted my score in the full ECM simply by changing the
scoring program!  It turns out I was throwing away positions
that I would get in less than 20 seconds because I would lose them
at say 50 seconds or something.  All I have to do is quit at the
20 second mark and my score jumped up 36 problems!   I don't have
the faith in this testing method you guy's do.  It's probably the
only reasonable way to run a sloppy set though.

- Don





On January 19, 1998 at 13:30:39, Robert Hyatt wrote:

>On January 19, 1998 at 03:39:23, Don Dailey wrote:
>
>>On January 18, 1998 at 18:50:20, Amir Ban wrote:
>>
>>>
>>>Don,
>>>
>>>1. I'm ok with ECM98.
>>>
>>>2. Good to see general consensus on the data, but I think you are too
>>>eager to throw out on the basis of "flakiness". We really can't expect
>>>things to stabilize at ply 1, and when we have a move that is clearly
>>>better in the longer run, we shouldn't hesitate to say it is the
>>>solution (and to clearly say that any others are wrong). I don't know
>>>how many of the other 81 would pass your rigid criteria ...
>>>
>>>3. Who's coordinating this ? I nominate Bruce on the grounds that he has
>>>the best result so far.
>>>
>>>Amir
>>
>>Hi guys,
>>
>>I still had 302 positions that passed ALL my criteria.  Your programs
>>would flunk out a few more but since everyone will disagree on easiness
>>we will get a few back.   I think we could still end up with at least
>>200 that pass my "rigid" criteria.
>>
>>I won't complain if you want to include what I'm calling "flaky"
>>problems (as long as they are clearly best), but at least let me
>>make my case for being more selective before you outvote me!
>>
>>If we make an effort to have a clean set then:
>>
>> 1) You can shorten your test times by stopping on solution.
>>
>> 2) If you run to 2 minutes and stop you have to also either
>>    examine each position or set up scoring information to
>>    prove you would not have changed your mind had the set
>>    continued.
>>
>> 3) Running the program longer should guarantee a better solution
>>    count but this doesn't happen with flaky problems.
>>
>>
>>Please consider my proposal.  If you don't like it, that's ok, I can
>>work with this kind of set too.
>>
>>- Don
>
>
>the only thing I want to see is a suite where each position has a clear
>solution, whether it be hard or easy, but where the solution move is not
>something that might show up "just because".  IE the solution should be
>a tactical solution that requires a move that wouldn't normally be
>played,
>so we can compare apples to apples.  The position Bruce mentioned from
>the
>BK test is but one example.  Many people have, over the years, reported
>WAC results where they simply found the best move positionally without
>having any idea that it ends up winning material or mating.  I'd like to
>see our suite produce unambiguous results...
>
>
>I'd like to suggest the following way to get this started:
>
>lets take the first 100 positions to begin with.  If we all agree that
>10 seconds is too easy, that's fine by me.  If we'd rather look at them
>more carefully and eliminate the 3-4 ply solutions instead, it doesn't
>matter. But first, let's eliminate the easy ones.  After we agree on
>those, then lets eliminate the ambiguous ones, or the ones with too many
>solutions, or the ones that we can't confirm that the solution is really
>best, etc...
>
>I will tally the results.  I'd like to see Bruce do the same.  Then we
>can compare notes to be sure neither missed a comment by someone.  When
>we
>reduce the first 100 to N, then we move to the next 100.  100 seems
>managable,
>without producing huge posts.
>
>I'd also suggest we keep the FEN out of here.  I have the entire suite
>already as does Bruce.  It would save time/space to simply refer to the
>position by number, assuming we all have the same ECM suite from onenet.
>
>I'm going to check mine now and I will post a list of the ones I think
>are *not* too easy, to make my list short.  We can "or" our lists if
>you'd
>like, and discuss why I like one and not another, and do the same for
>your
>results as well.  I suspect the first 100 will go faster than the rest
>because I get 82 of them in 20 seconds, but only 569 of the whole set in
>that time.  So I obviously miss many more later on...



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