Expert Systems

• Some rules

• • if (CURRENT – LAST < 30) then NONE
  • if (SEASON = winter) then not BUGS
  • if (BARE) then TURF
  • if (SPARSE and not WEEDS) then FEED
  • if (BUGS and not SPARSE) then BUG
  • if (WEEDS and not SPARSE) then WEED
  • if (WEEDS and SPARSE) then WEEDFEED