147 search results - page 4 / 30 » Optimization and Simplification of Hierarchical Clusterings |
CGF
2006
13 years 7 months ago
2006
Many algorithms in computer graphics improve their efficiency by using Hierarchical Space Subdivision Schemes (HS3), such as octrees, kD-trees or BSP trees. Such HS3 usually provi...
VIS
2004
IEEE
14 years 8 months ago
2004
IEEE
A new method for the simplification and the visualization of vector fields is presented based on the notion of Centroidal Voronoi tessellations (CVT's). A CVT is a special Vo...
IPL
2007
13 years 7 months ago
2007
In this work we consider hierarchical clustering algorithms, such as UPGMA, which follow the closest-pair joining scheme. We survey optimal O(n2)-time implementations of such algo...
CSB
2005
IEEE
14 years 1 months ago
2005
IEEE
With hierarchical clustering methods, divisions or fusions, once made, are irrevocable. As a result, when two elements in a bottom-up algorithm are assigned to one cluster, they c...
DAC
2001
ACM
14 years 8 months ago
2001
ACM
In this paper, we study the problem of performance-driven multi-level circuit clustering with application to hierarchical FPGA designs. We first show that the performance-driven m...