Author: Robert Hyatt
Date: 14:47:54 10/08/03
Go up one level in this thread
On October 08, 2003 at 17:16:10, Uri Blass wrote: >On October 08, 2003 at 16:51:18, Robert Hyatt wrote: > >>On October 07, 2003 at 18:01:26, Uri Blass wrote: >> >>>On October 07, 2003 at 16:08:02, Pat King wrote: >>> >>>>On October 07, 2003 at 13:27:30, Russell Reagan wrote: >>>> >>>>>On October 07, 2003 at 13:08:28, Anthony Cozzie wrote: >>>>> >>>>>>I'm working on incremental attack >>>>>>tables right now so that I don't have to mess with it. >>>>> >>>>>Be sure that you can really benefit from the overhead involved, because when you >>>>>go incremental, you have that overhead no matter what. If you do things on the >>>>>fly, you save work in cases where you don't need it. I know several people >>>>>prefer to do things on the fly, but I don't know of anyone that has tried both >>>>>ways and uses the incremental approach, but I certainly don't know what everyone >>>>>does. >>>>> >>>> >>>>The only thing I do on the fly is the raw material score. I once figured that >>>>this made sense to something like 8 ply (I've got a slow engine on a slow >>>>machine). Almost anything more complex doesn't justify an incremental approach >>>>IMHO (and I only say "almost" because I hate stating absolutes). >>>> >>>>Pat >>> >>>I believe that the number of plies that you search is irrelevant if you may want >>>the information in every node. >>> >>>In the case that we discuss(attack tables) we may need the information at every >>>node(except part of the leaves) for better order of moves or better pruning >>>decisions. >>> >>>Uri >> >> >>The deeper you go, the less sense incremental updating makes, in terms of >>scoring stuff. IE in endgames where you go 30 plies, is it faster to do >>30 incremental updates, or just one total calculation at the endpoint? > >Only if you assume that you need the evaluation only at the end point. > >I need the evaluation at other points in the tree (for example for decisions if >to prune lines). > >Uri Right. Didn't think about that case, but you are correct.
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