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» Bounded Query Functions with Limited Output Bits
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PODS
2010
ACM
205views Database» more  PODS 2010»
15 years 2 months ago
Positive higher-order queries
We investigate a higher-order query language that embeds operators of the positive relational algebra within the simply-typed λ-calculus. Our language allows one to succinctly de...
Michael Benedikt, Gabriele Puppis, Huy Vu
86
Voted
STACS
2007
Springer
15 years 3 months ago
A New Rank Technique for Formula Size Lower Bounds
We exactly determine the formula size of the parity function. If n = 2 + k, where 0 ≤ k < 2 , then the formula size of parity on n bits is 2 (2 + 3k) = n2 + k2 − k2 . Khrap...
Troy Lee
ICDT
2003
ACM
126views Database» more  ICDT 2003»
15 years 2 months ago
Typechecking Top-Down Uniform Unranked Tree Transducers
We investigate the typechecking problem for XML queries: statically verifying that every answer to a query conforms to a given output schema, for inputs satisfying a given input sc...
Wim Martens, Frank Neven
COCO
2003
Springer
118views Algorithms» more  COCO 2003»
15 years 2 months ago
Lower bounds for predecessor searching in the cell probe model
We consider a fundamental problem in data structures, static predecessor searching: Given a subset S of size n from the universe [m], store S so that queries of the form “What i...
Pranab Sen
COLT
2001
Springer
15 years 2 months ago
On Using Extended Statistical Queries to Avoid Membership Queries
The Kushilevitz-Mansour (KM) algorithm is an algorithm that finds all the “large” Fourier coefficients of a Boolean function. It is the main tool for learning decision trees ...
Nader H. Bshouty, Vitaly Feldman