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DBPL
2007
Springer
103views Database» more  DBPL 2007»
14 years 2 days ago
Datalog Programs over Infinite Databases, Revisited
Traditionally, infinite databases were studied as a data model for queries that may contain function symbols (since functions may be expressed as infinite relations). Recently, th...
Sara Cohen, Joseph Gil, Evelina Zarivach
ICALP
2009
Springer
14 years 2 months ago
A Better Algorithm for Random k-SAT
Let Φ be a uniformly distributed random k-SAT formula with n variables and m clauses. We present a polynomial time algorithm that finds a satisfying assignment of Φ with high p...
Amin Coja-Oghlan
CORR
2008
Springer
106views Education» more  CORR 2008»
13 years 8 months ago
Modular difference logic is hard
In connection with machine arithmetic, we are interested in systems of constraints of the form x + k y + k . Over integers, the satisfiability problem for such systems is polynomi...
Nikolaj Bjørner, Andreas Blass, Yuri Gurevi...
STOC
2006
ACM
132views Algorithms» more  STOC 2006»
14 years 8 months ago
Near-optimal algorithms for unique games
Unique games are constraint satisfaction problems that can be viewed as a generalization of Max-Cut to a larger domain size. The Unique Games Conjecture states that it is hard to ...
Moses Charikar, Konstantin Makarychev, Yury Makary...
3DPVT
2006
IEEE
216views Visualization» more  3DPVT 2006»
13 years 12 months ago
Object Modeling with Guaranteed Fulfillment of Geometric Constraints
Object modeling under consideration of geometric constraints is an important task. In this paper we describe a novel approach to achieving this goal. It has the nice property that...
Da-Chuan Cheng, Xiaoyi Jiang