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SIGMOD
2005
ACM
220views Database» more  SIGMOD 2005»
16 years 2 months ago
Sampling Algorithms in a Stream Operator
Complex queries over high speed data streams often need to rely on approximations to keep up with their input. The research community has developed a rich literature on approximat...
Theodore Johnson, S. Muthukrishnan, Irina Rozenbau...
111
Voted
COCO
2009
Springer
128views Algorithms» more  COCO 2009»
15 years 9 months ago
Inapproximability of Vertex Cover and Independent Set in Bounded Degree Graphs
We study the inapproximability of Vertex Cover and Independent Set on degree d graphs. We prove that: • Vertex Cover is Unique Games-hard to approximate to within a factor 2−(...
Per Austrin, Subhash Khot, Muli Safra
162
Voted
ICDM
2006
IEEE
296views Data Mining» more  ICDM 2006»
15 years 8 months ago
Fast Random Walk with Restart and Its Applications
How closely related are two nodes in a graph? How to compute this score quickly, on huge, disk-resident, real graphs? Random walk with restart (RWR) provides a good relevance scor...
Hanghang Tong, Christos Faloutsos, Jia-Yu Pan
152
Voted
SMI
2006
IEEE
186views Image Analysis» more  SMI 2006»
15 years 8 months ago
BSP Shapes
We discuss a shape representation based on a set of disconnected (planar) polygons. The polygons are computed by creating a BSP that contains approximately linear surface patches ...
Carsten Stoll, Hans-Peter Seidel, Marc Alexa
SSDBM
2006
IEEE
139views Database» more  SSDBM 2006»
15 years 8 months ago
Sampling Trajectory Streams with Spatiotemporal Criteria
Monitoring movement of high-dimensional points is essential for environmental databases, geospatial applications, and biodiversity informatics as it reveals crucial information ab...
Michalis Potamias, Kostas Patroumpas, Timos K. Sel...