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COMPGEOM
2008
ACM
13 years 10 months ago
Tighter bounds for random projections of manifolds
The Johnson-Lindenstrauss random projection lemma gives a simple way to reduce the dimensionality of a set of points while approximately preserving their pairwise distances. The m...
Kenneth L. Clarkson
EUSFLAT
2007
180views Fuzzy Logic» more  EUSFLAT 2007»
13 years 9 months ago
On Cluster Analysis Based on Fuzzy Relations Between Spatial Data
Methods like DBSCAN are widely used in the analysis of spatial data. These methods are based on the neighborhood relations which use distance between points. However, these neighb...
Efendi N. Nasibov, Gözde Ulutagay
BILDMED
2006
169views Algorithms» more  BILDMED 2006»
13 years 9 months ago
Segmentation of the Vascular Tree in CT Data Using Implicit Active Contours
Abstract. We propose an algorithm for the segmentation of blood vessels in the kind of CT-data typical for diagnostics in a clinical environment. Due to poor quality and variance i...
Karsten Rink, Arne-Michael Törsel, Klaus D. T...
NIPS
2003
13 years 9 months ago
Geometric Clustering Using the Information Bottleneck Method
We argue that K–means and deterministic annealing algorithms for geometric clustering can be derived from the more general Information Bottleneck approach. If we cluster the ide...
Susanne Still, William Bialek, Léon Bottou
COMGEO
2008
ACM
13 years 8 months ago
Optimal core-sets for balls
Given a set of points P Rd and value > 0, an -core-set S P has the property that the smallest ball containing S is within of the smallest ball containing P. This paper shows ...
Mihai Badoiu, Kenneth L. Clarkson