Path: utzoo!mnetor!uunet!munnari!vuwcomp!lindsay From: lindsay@comp.vuw.ac.nz (Lindsay Groves) Newsgroups: comp.lang.prolog Subject: Re: mine embarrassingly simple problem Message-ID: <13364@comp.vuw.ac.nz> Date: 17 Mar 88 03:49:59 GMT References: <500@taux01.UUCP> <764@cresswell.quintus.UUCP> <503@taux01.UUCP> Reply-To: lindsay@comp.vuw.ac.nz (Lindsay Groves) Organization: Comp Sci, Victoria Univ, Wellington, New Zealand Lines: 21 In article <503@taux01.UUCP> shahaf%taux01@nsc.COM writes: >In article <764@cresswell.quintus.UUCP> ok@quintus.UUCP (Richard A. O'Keefe) writes: >> >>(4) Could you tell this newsgroup more about your program? It would be >> very interesting to hear of something that ancestral cuts were >> needed for. (They _aren't_ needed for interpreting Prolog!) >The program does Network synthesis from boolean equations for VLSI design. >The ancestral cut was used to stop the search of local transformations >when the rate of new maping is too low. >shahaf%taux01@nsc.COM I'll save Richard saying it -- this doesn't say much about the program, and certainly doesn't explain why ancestral cuts are supposed to be necessary. Could you describe the problem in a bit more detail and illustrate just how the need for ansectral cuts arises? Perhaps a simplified version of the problem could be used to illustrate the point. An example would certainly help. Lindsay Groves Logic programmers' theme song: "The first cut is the deepest"