Author: Don Dailey
Date: 11:38:14 05/01/98
Hi everyone, Howard asked me to finish the process of redacting the ECM set. Since I now have plenty of spare time I am willing to do this, if everyone agree's. I suggest that we leave the easy problems in the set. The consensous seems to be the same. There is no harm in having a few easy ones and some of us have expressed some concern that the elimination process could be subject to problems. I agree with this viewpoint. The main thing to address is the correctness of the set as it stands now. If anyone finds or suspects errors, let's post this and open it up for discussion. To summarize our criteria for inclusion, each position should have the following characteristics (please correct me if I'm wrong on what was agreed to): A) Solution should be correct. (obviously) B) Solution should not be an obvious move that any program has some chance of playing even if it doesn't really understand the idea. C) All solutions should be given. It's ok to have multiple solutions if they all involve a winning plan. Conversely, non-solutions should change the game theoretic outcome with perfect play. Later on, if anyone is interested, we can sort the set by difficulty. This can be approximated by having n programs sort them individually and then combining the results in some fashion such as average, median, worst case ranking or some other method. We can discuss this later if anyone feels it is worth persuing. - Don
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