Author: Uri Blass
Date: 15:14:39 06/08/02
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On June 08, 2002 at 12:54:55, José Carlos wrote: > I'm testing an aggresive prunning method in my program. I believe best testing >comes from real games, but I was curious how this change would affect tests >suites results. So I tried the test from GPC site with the two versions, with >and without aggresive prunning. I used my old PII 400 and 30 seconds for >position. > I have no experience with these epd tests and the result confuses me. It seems >to randomly depend on the used time that a version does better or worse. Here >are the results (by EPD2WB): > >Normal version: New version: > > Sec Solved Total Sec Solved Total >---- ------ ------ ---- ------ ------ > 1 6 6 + 1 2 2 - > 2 1 7 + 2 2 4 - > 3 0 7 = 3 3 7 = > 4 7 14 - 4 11 18 + > 5 6 20 - 5 5 23 + > 6 8 28 - 6 6 29 + > 7 3 31 - 7 5 34 + > 8 4 35 = 8 1 35 = > 9 2 37 + 9 1 36 - > 10 1 38 - 10 4 40 + > 11 2 40 = 11 0 40 = > 12 3 43 = 12 3 43 = > 13 2 45 = 13 2 45 = > 14 0 45 - 14 1 46 + > 15 1 46 - 15 2 48 + > 16 6 52 + 16 1 49 - > 17 1 53 + 17 2 51 - > 18 3 56 + 18 2 53 - > 19 1 57 + 19 0 53 - > 20 1 58 + 20 3 56 - > 21 1 59 + 21 2 58 - > 22 0 59 = 22 1 59 = > 23 1 60 + 23 0 59 - > 24 1 61 - 24 3 62 + > 25 1 62 - 25 1 63 + > 26 3 65 + 26 1 64 - > 27 3 68 + 27 2 66 - > 28 1 69 + 28 0 66 - > 29 1 70 + 29 0 66 - > 30 1 70 + 30 1 67 - > > I've put a (+) when one version does better at n seconds, a (=) for equal >performance and a (-) for worse. > So what's your experience in this matter? How would you interpret the results? > > Thanks in advance, > > José C. It is not clear which version is better and some bad positions in GCP test suite do not help. I know that there are some positions when Movei can do the following: 1)Find the right move 2)Change it's mind to a wrong move 3)Change it's mind back to the right move. It is possible that movei is going to solve less positions if I make a change that make it slightly faster because in the first case it is not going to be fast enough to change it's mind to the wrong move. Uri
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