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» A Note on Karr's Algorithm
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IPL
2008
65views more  IPL 2008»
15 years 1 months ago
On the fixed-parameter tractability of parameterized model-checking problems
In this note, we show, through the use of examples, how generic results for proving fixed-parameter tractability which apply to restricted classes of structures can sometimes be m...
Iain A. Stewart
DM
2007
106views more  DM 2007»
15 years 1 months ago
The Roberts characterization of proper and unit interval graphs
In this note, a constructive proof is given that the classes of proper interval graphs and unit interval graphs coincide, a result originally established by Fred S. Roberts. Addit...
Frédéric Gardi
ACTA
1998
69views more  ACTA 1998»
15 years 1 months ago
Asymptotic Expansions of the Mergesort Recurrences
This note provides exact formulæ for the mean and variance of the cost of top-down recursive mergesort. These formulæ improve upon earlier results of Flajolet and Golin. Key wor...
Hsien-Kuei Hwang
HT
2009
ACM
14 years 11 months ago
Retrieving broken web links using an approach based on contextual information
In this short note we present a recommendation system for automatic retrieval of broken Web links using an approach based on contextual information. We extract information from th...
Juan Martinez-Romo, Lourdes Araujo
SODA
2010
ACM
174views Algorithms» more  SODA 2010»
14 years 11 months ago
Differentially Private Combinatorial Optimization
Consider the following problem: given a metric space, some of whose points are "clients," select a set of at most k facility locations to minimize the average distance f...
Anupam Gupta, Katrina Ligett, Frank McSherry, Aaro...