Author: Robert Hyatt
Date: 18:55:31 10/27/99
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On October 27, 1999 at 15:38:54, Frank Schneider wrote: >Hi all, > >this is a question about the searchalgorithms used by other programs. >Many programs and also Gromit seem to use PVS or MDT(f) which both use >nullwindow-searches. >Is there anyone using a search that doesn't do nullwindow searches? >Why? Why not? > > >Frank I doubt any single person can answer your question about who does PVS and who does pure alpha/beta, because each author would have to speak up about his code. But the reason _for_ using PVS is that it saves at least 10% in time/ nodes over non-PVS searches on average, and at times it saves a lot more. I've been using it since 1978...
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