ORDER-INDEPENDENT UNIFICATION AND BACKTRACKING

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dc.contributor.authorOlthof, Ianeng
dc.contributor.authorCleary, John G.eng
dc.date.accessioned2008-02-27T16:57:57Z
dc.date.available2008-02-27T16:57:57Z
dc.date.computerscience1999-05-27eng
dc.date.issued1992-07-01eng
dc.description.abstractTwo algorithms for order-independent unification are presented. Both assume that unifications are timestamped, giving a natural ordering on unifications from lowest timestamp to highest. The first algorithm permits lower-timestamped unifications to be performed after higher-timestamped unifications have already been done, without requiring previous unifications to be backtracked and later redone. The binding state that results is indistinguishable from that produced by a lowest-to-highest execution. The second algorithm extends the first by allowing intermediate unifications to be undone, again avoiding work in undoing and redoing unifications with higher timestamps. These algorithms are designed for distributed, fully AND-parallel Prolog execution; asynchronous events occurring on different CPSs can be reconciled without too much overhead.eng
dc.description.notesWe are currently acquiring citations for the work deposited into this collection. We recognize the distribution rights of this item may have been assigned to another entity, other than the author(s) of the work.If you can provide the citation for this work or you think you own the distribution rights to this work please contact the Institutional Repository Administrator at digitize@ucalgary.caeng
dc.identifier.department1992-472-10eng
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/30554
dc.identifier.urihttp://hdl.handle.net/1880/45839
dc.language.isoEngeng
dc.publisher.corporateUniversity of Calgaryeng
dc.publisher.facultyScienceeng
dc.subjectComputer Scienceeng
dc.titleORDER-INDEPENDENT UNIFICATION AND BACKTRACKINGeng
dc.typeunknown
thesis.degree.disciplineComputer Scienceeng
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