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CINQ
2004
Springer
131views Database» more  CINQ 2004»
13 years 10 months ago
Model-Independent Bounding of the Supports of Boolean Formulae in Binary Data
Abstract. Data mining algorithms such as the Apriori method for finding frequent sets in sparse binary data can be used for efficient computation of a large number of summaries fr...
Artur Bykowski, Jouni K. Seppänen, Jaakko Hol...
SODA
2010
ACM
176views Algorithms» more  SODA 2010»
14 years 2 months ago
Self-improving Algorithms for Convex Hulls
We describe an algorithm for computing planar convex hulls in the self-improving model: given a sequence I1, I2, . . . of planar n-point sets, the upper convex hull conv(I) of eac...
Kenneth L. Clarkson, Wolfgang Mulzer, C. Seshadhri
FOCS
2008
IEEE
13 years 11 months ago
Size Bounds and Query Plans for Relational Joins
Relational joins are at the core of relational algebra, which in turn is the core of the standard database query language SQL. As their evaluation is expensive and very often domi...
Albert Atserias, Martin Grohe, Dániel Marx
MFCS
1995
Springer
13 years 8 months ago
Separations by Random Oracles and "Almost" Classes for Generalized Reducibilities
Let ≤r and ≤s be two binary relations on 2N which are meant as reducibilities. Let both relations be closed under finite variation (of their set arguments) and consider the un...
Wolfgang Merkle, Yongge Wang
CORR
2007
Springer
95views Education» more  CORR 2007»
13 years 4 months ago
A Note on the Periodicity and the Output Rate of Bit Search Type Generators
We investigate the bit-search type irregular decimation algorithms that are used within LFSR-based stream ciphers. In particular, we concentrate on BSG and ABSG, and consider two ...
Yucel Altug, N. Polat Ayerden, Mehmet Kivanç...