Sarciness wrote:What Dann says echoes my sentiments. Vas and Rybka may be guilty... maybe in the worst sense, but this "trial" is not fair at all.
64% similarity does not sound like "proof beyond reasonable doubt" to me, much less "absolute proof" as Robert Hyatt seems to claim.
Once again, first READ the report, before making comments. I won't explain where the 64% came from, but it was a comparison with Rybka 2.3.2 and Fruit if I recall correctly.
Go back (for starters) to the pre-beta versions of Rybka, that Vas also claimed were 100% original based on mtd(f). Pure bullsh**. Those versions were almost a complete copy of Crafty. Book code, option.c. search.c evaluate.c and so forth. He even copied known bugs and bogus code, line for line. That is _absolute proof_ that rybka 1.6.1 was not "100% original". Not even 25% original. Then we go on to Rybka 1.0 and show lots of _identical code_. The eval between fruit and Rybka can not be identical since the board representations are not the same. But the evaluation components are there. with the same term values and such. And there is plenty of 100% matches between fruit and Rybka 1.
You have to first read the report, before posting comments that are wildly incorrect. There is absolutely no doubt that crafty and then fruit code was copied outright. The early bitboard code in rybka 1 beta and such is from Crafty. The search and eval from fruit were massaged to fit the bitboard framework, but were semantically unchanged. This is copying at its worst...
If this were a jury in a real trial they would be instantly dismissed becasue many of them have personal biases in regard to the defendant. This is a bullshit ruling which reflects badly on the ICGA. What they need is an independent and impartial analysis.
"if we were the jury." But we were not. We were the prosecutors, developing and presenting evidence. The defense chose to "plead the 5th" and not answer _anything_. The ICGA was judge and jury, and they are not active competitors.
Vas has not defended himself and should do so in my opinion. His silence seems more like disillusionment with the computer chess world or even a guilty concience than "taking the high ground".
He is probably concerned about the FSF next, since they too got a copy of the report...