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PODS
2001
ACM
135views Database» more  PODS 2001»
16 years 6 months ago
On the Complexity of Join Predicates
We consider the complexity of join problems, focusing on equijoins, spatial-overlap joins, and set-containment joins. We use a graph pebbling model to characterize these joins com...
Jin-yi Cai, Venkatesan T. Chakaravarthy, Raghav Ka...
DCC
2002
IEEE
16 years 6 months ago
Zero-Error Source Coding with Maximum Distortion Criterion
Let finite source and reproduction alphabets X and Y and a distortion measure d : X ? Y [0, ) be given. We study the minimum asymptotic rate required to describe a source distrib...
Ertem Tuncel, Prashant Koulgi, Shankar L. Regunath...
POPL
2010
ACM
16 years 4 months ago
Threesomes, With and Without Blame
Abstract. The blame calculus of Wadler and Findler gives a high-level semantics to casts in higher-order languages. The coercion calculus of Henglein, on the other hand, provides a...
Jeremy G. Siek, Philip Wadler
SODA
2010
ACM
177views Algorithms» more  SODA 2010»
16 years 4 months ago
On the Exact Space Complexity of Sketching and Streaming Small Norms
We settle the 1-pass space complexity of (1 ? )approximating the Lp norm, for real p with 1 p 2, of a length-n vector updated in a length-m stream with updates to its coordinate...
Daniel M. Kane, Jelani Nelson, David P. Woodruff
CIAC
2010
Springer
263views Algorithms» more  CIAC 2010»
16 years 4 months ago
The Complexity of Computing Minimal Unidirectional Covering Sets
Abstract. Given a binary dominance relation on a set of alternatives, a common thread in the social sciences is to identify subsets of alternatives that satisfy certain notions of ...
Dorothea Baumeister, Felix Brandt, Felix Fischer, ...