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SAS
2004
Springer
16 years 6 days ago
A Polynomial-Time Algorithm for Global Value Numbering
We describe a polynomial-time algorithm for global value numbering, which is the problem of discovering equivalences among program sub-expressions. We treat all conditionals as non...
Sumit Gulwani, George C. Necula
FOCS
2003
IEEE
16 years 4 days ago
On Levels in Arrangements of Curves, II: A Simple Inequality and Its Consequences
We give a surprisingly short proof that in any planar arrangement of Ò curves where each pair intersects at most a fixed number (×) of times, the -level has subquadratic (Ç´...
Timothy M. Chan
FOCS
2002
IEEE
15 years 11 months ago
Learning a Hidden Matching
We consider the problem of learning a matching (i.e., a graph in which all vertices have degree 0 or 1) in a model where the only allowed operation is to query whether a set of ve...
Noga Alon, Richard Beigel, Simon Kasif, Steven Rud...
PODC
2009
ACM
15 years 11 months ago
Brief announcement: locality-based aggregate computation in wireless sensor networks
We present DRR-gossip, an energy-efficient and robust aggregate computation algorithm in wireless sensor networks. We prove that the DRR-gossip algorithm requires O(n) messages a...
Jen-Yeu Chen, Gopal Pandurangan, Jianghai Hu
CPM
2001
Springer
108views Combinatorics» more  CPM 2001»
15 years 11 months ago
A Very Elementary Presentation of the Hannenhalli-Pevzner Theory
In 1995, Hannenhalli and Pevzner gave a first polynomial solution to the problem of finding the minimum number of reversals needed to sort a signed permutation.Their solution, a...
Anne Bergeron