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» On partitions of discrete boxes
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EDBT
2011
ACM
281views Database» more  EDBT 2011»
12 years 11 months ago
Fast and accurate computation of equi-depth histograms over data streams
Equi-depth histograms represent a fundamental synopsis widely used in both database and data stream applications, as they provide the cornerstone of many techniques such as query ...
Hamid Mousavi, Carlo Zaniolo
COMPGEOM
2009
ACM
14 years 2 months ago
Approximate center points with proofs
We present the Iterated-Tverberg algorithm, the first deterministic algorithm for computing an approximate centerpoint of a set S ∈ Rd with running time sub-exponential in d. T...
Gary L. Miller, Donald Sheehy
CDC
2009
IEEE
139views Control Systems» more  CDC 2009»
14 years 10 days ago
Reachability analysis for continuous systems under shared control: Application to user-interface design
— We extend techniques for a reachability-based ion to continuous systems under shared control, that is, systems which have both inputs controlled by the automation and inputs co...
Nikolai Matni, Meeko Oishi
COMPGEOM
1993
ACM
13 years 11 months ago
Approximating Center Points with Iterated Radon Points
We give a practical and provably good Monte Carlo algorithm for approximating center points. Let P be a set of n points in IRd . A point c ∈ IRd is a β-center point of P if eve...
Kenneth L. Clarkson, David Eppstein, Gary L. Mille...
COMPGEOM
1994
ACM
13 years 11 months ago
Query-Sensitive Ray Shooting
Ray (segment) shooting is the problem of determining the first intersection between a ray (directed line segment) and a collection of polygonal or polyhedral obstacles. In order t...
Joseph S. B. Mitchell, David M. Mount, Subhash Sur...