On Mon, Oct 24, 2011 at 3:05 PM, Alexander Korotkov <aekorot...@gmail.com>wrote:
> If we allow user to specify own gist_penalty function, then such function > should deal with: > 1) GiST-specific data structures such as GISTENTRY. > 2) Decomposing ranges using range_deserialize. > 3) Inifinities, which we could handle in general penalty functions. > Thats why I prefere to implement subtype_diff. > I forgot another agument for having subtype_diff: 4) In my picksplit algorithm it would be more natural to use subtype_diff for measuring overlap than use penalty function. ------ With best regards, Alexander Korotkov.