Sciweavers

8094 search results - page 15 / 1619
» Improvements in Formula Generalization
Sort
View
75
Voted
STOC
1987
ACM
104views Algorithms» more  STOC 1987»
15 years 4 months ago
The Boolean Formula Value Problem Is in ALOGTIME
The Boolean formula value problem is in alternating log time and, more generally, parenthesis context-free languages are in alternating log time. The evaluation of reverse Polish ...
Samuel R. Buss
102
Voted
CORR
1998
Springer
104views Education» more  CORR 1998»
15 years 11 days ago
Monotonicity and Persistence in Preferential Logics
An important characteristic of many logics for Arti cial Intelligence is their nonmonotonicity. This means that adding a formula to the premises can invalidate some of the consequ...
Joeri Engelfriet
88
Voted
ICALP
2010
Springer
15 years 5 months ago
On Approximate Horn Formula Minimization
The minimization problem for Horn formulas is to find a Horn formula equivalent to a given Horn formula, using a minimum number of clauses. A 2log1−ǫ (n) -inapproximability re...
Amitava Bhattacharya, Bhaskar DasGupta, Dhruv Muba...
104
Voted
ICLP
2003
Springer
15 years 5 months ago
Loop Formulas for Disjunctive Logic Programs
Abstract. We extend Clark’s definition of a completed program and the definition of a loop formula due to Lin and Zhao to disjunctive logic programs. Our main result, generaliz...
Joohyung Lee, Vladimir Lifschitz
70
Voted
IGPL
1998
64views more  IGPL 1998»
15 years 11 days ago
Formulas for which Contraction is Admissible
A formula A is said to have the contractionproperty in a logic L i whenever A;A;? `L B (when ? is a multiset) also A;? `L B. In MLL and in MALL without the additive constants a fo...
Arnon Avron