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Mar 3, 2011 at 1:14 comment added Gerhard Paseman If you ask for an assignment for which the instance evaluates to 1, it is probably something like #P-hard to get one and maximize the sum as well. Gerhard "Ask Me About System Design" Paseman, 2011.03.02
Mar 3, 2011 at 1:12 comment added Gerhard Paseman It should be polynomial time to maximize the given sum. Add both sums together and find which literals occur negatively more often than positively, and vice versa. Unless you meant something else? Gerhard "Ask Me About System Design" Paseman, 2011.03.02
Mar 3, 2011 at 1:07 history asked Michael Biro CC BY-SA 2.5