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ICALP
2007
Springer
13 years 10 months ago
Approximation by DNF: Examples and Counterexamples
Say that f : {0, 1}n → {0, 1} -approximates g : {0, 1}n → {0, 1} if the functions disagree on at most an fraction of points. This paper contains two results about approximatio...
Ryan O'Donnell, Karl Wimmer
ICALP
2007
Springer
13 years 10 months ago
Subexponential Parameterized Algorithms
Frederic Dorn, Fedor V. Fomin, Dimitrios M. Thilik...
ICALP
2007
Springer
13 years 10 months ago
Regular Languages of Nested Words: Fixed Points, Automata, and Synchronization
Abstract. Nested words are a restriction of the class of visibly pushdown languages that provide a natural model of runs of programs with recursive procedure calls. The usual conne...
Marcelo Arenas, Pablo Barceló, Leonid Libki...
ICALP
2007
Springer
13 years 10 months ago
Aliased Register Allocation for Straight-Line Programs Is NP-Complete
Register allocation is NP-complete in general but can be solved in linear time for straight-line programs where each variable has at most one definition point if the bank of regis...
Jonathan K. Lee, Jens Palsberg, Fernando Magno Qui...
ICALP
2007
Springer
13 years 10 months ago
Ring Signatures of Sub-linear Size Without Random Oracles
Ring signatures, introduced by Rivest, Shamir and Tauman, enable a user to sign a message anonymously on behalf of a “ring”. A ring is a group of users, which includes the sign...
Nishanth Chandran, Jens Groth, Amit Sahai
ICALP
2007
Springer
13 years 10 months ago
Private Locally Decodable Codes
We consider the problem of constructing efficient locally decodable codes in the presence of a computationally bounded adversary. Assuming the existence of one-way functions, we c...
Rafail Ostrovsky, Omkant Pandey, Amit Sahai
ICALP
2007
Springer
13 years 10 months ago
Bounded Depth Data Trees
A data tree is a tree where each node has a label from a finite set, and a data value from a possibly infinite set. We consider data trees whose depth is bounded beforehand. By d...
Henrik Björklund, Mikolaj Bojanczyk
ICALP
2007
Springer
13 years 10 months ago
An Optimal Decomposition Algorithm for Tree Edit Distance
Abstract. The edit distance between two ordered rooted trees with vertex labels is the minimum cost of transforming one tree into the other by a sequence of elementary operations c...
Erik D. Demaine, Shay Mozes, Benjamin Rossman, Ore...