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ICALP
2009
Springer
14 years 11 months ago
Limiting Negations in Formulas
Negation-limited circuits have been studied as a circuit model between general circuits and monotone circuits. In this paper, we consider limiting negations in formulas. The minimu...
Hiroki Morizumi
ICALP
2009
Springer
14 years 11 months ago
Correlation Clustering Revisited: The "True" Cost of Error Minimization Problems
Correlation Clustering was defined by Bansal, Blum, and Chawla as the problem of clustering a set of elements based on a possibly inconsistent binary similarity function between e...
Nir Ailon, Edo Liberty
ICALP
2009
Springer
14 years 11 months ago
Factoring Groups Efficiently
We give a polynomial time algorithm that computes a decomposition of a finite group G given in the form of its multiplication table. That is, given G, the algorithm outputs two su...
Neeraj Kayal, Timur Nezhmetdinov
ICALP
2009
Springer
14 years 11 months ago
Dynamic Succinct Ordered Trees
Abstract. We study the problem of maintaining a dynamic tree succinctly, in 2n + o(n) bits, under updates of the following form: insertion or deletion of a leaf, insertion of a nod...
Arash Farzan, J. Ian Munro
ICALP
2009
Springer
14 years 11 months ago
Improved Bounds for Flow Shop Scheduling
We resolve an open question raised by Feige & Scheideler by showing that the best known approximation algorithm for flow shops is essentially tight with respect to the used low...
Monaldo Mastrolilli, Ola Svensson
ICALP
2009
Springer
14 years 11 months ago
The Ehrenfeucht-Silberger Problem
We consider repetitions in words and solve a longstanding open problem about the relation between the period and the length of its longest unbordered factor. A word u is called bor...
Stepan Holub, Dirk Nowotka
ICALP
2009
Springer
14 years 11 months ago
External Sampling
We initiate the study of sublinear-time algorithms in the external memory model [14]. In this model, the data is stored in blocks of a certain size B, and the algorithm is charged...
Alexandr Andoni, Piotr Indyk, Krzysztof Onak, Roni...
ICALP
2009
Springer
14 years 11 months ago
Fast FAST
We present a randomized subexponential time, polynomial space parameterized algorithm for the k-Weighted Feedback Arc Set in Tournaments (k-FAST) problem. We also show that our alg...
Noga Alon, Daniel Lokshtanov, Saket Saurabh
ICALP
2009
Springer
14 years 11 months ago
Online Computation with Advice
Adi Rosén, Amos Korman, Pierre Fraigniaud, ...
ICALP
2009
Springer
14 years 11 months ago
Distortion Is Fixed Parameter Tractable
Michael R. Fellows, Fedor V. Fomin, Daniel Lokshta...