On Dec 6, 2007 10:13 AM, Álvaro Begué <[EMAIL PROTECTED]> wrote: > > > On Dec 6, 2007 10:06 AM, Jason House <[EMAIL PROTECTED]> wrote: > > > > > > > On Dec 6, 2007 7:13 AM, Álvaro Begué <[EMAIL PROTECTED]> wrote: > > > > > 88|0|17.033168 > > > 88|1|12.263955 > > > > > > and > > > > > > 164|0|17.388714 > > > 164|1|25.862695 > > > > > > Are identical except for swapping the roles of white and black > > > > > > Curiously, the gamma values in your example are way different > > > > 17.033168 vs 25.862595 > > and > > 12.263955 vs 17.388714 > > > > That was exactly my point. Those should theoretically be identical, which > means that the difference comes purely from noise. The games that were used > for training probably don't have enough examples of these patterns to get a > good estimate of their true strength. >
This may serve as a good test of if there is enough data to assign values to the patterns. Actually, the gamma values are only determined up to a multiplication of all > of them by a constant. Because patterns with white to move and patterns with > black to move never compete with each other, they may have drifted in such a > way that the discrepancy is not as large as it seems (since both ratios > 25.862595/17.033168 and 17.388714/12.263955 are similar). > That may be a fluke. Other pairs have a much different ratio 0|0|1.463386 0|1|1.337276 > Still, forcing those gamma values to be identical seems like the right > thing to do. > I agree
_______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
