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ICDE
2001
IEEE
111views Database» more  ICDE 2001»
16 years 8 months ago
Overcoming Limitations of Sampling for Aggregation Queries
We study the problem of approximately answering aggregation queries using sampling. We observe that uniform sampling performs poorly when the distribution of the aggregated attrib...
Surajit Chaudhuri, Gautam Das, Mayur Datar, Rajeev...
211
Voted
MICCAI
2006
Springer
16 years 8 months ago
Towards Optimization of Probe Placement for Radio-Frequency Ablation
We present a model for the optimal placement of mono- and bipolar probes in radio-frequency (RF) ablation. The model is based on a numerical computation of the probe's electri...
Inga Altrogge, Tim Kröger, Tobias Preusser, C...
MICCAI
2004
Springer
16 years 8 months ago
Simultaneous Topology and Stiffness Identification for Mass-Spring Models Based on FEM Reference Deformations
Mass-spring systems are of special interest for soft tissue modeling in surgical simulation due to their ease of implementation and real-time behavior. However, the parameter ident...
Barbara Solenthaler, Gábor Székely, ...
210
Voted
MICCAI
2004
Springer
16 years 8 months ago
Parallel Optimization Approaches for Medical Image Registration
Optimization of a similarity metric is an essential component in most medical image registration approaches based on image intensities. The increasing availability of parallel comp...
Mark P. Wachowiak, Terry M. Peters
IPMI
2001
Springer
16 years 8 months ago
Partial Volume Segmentation of Cerebral MRI Scans with Mixture Model Clustering
A mixture model clustering algorithm is presented for robust MRI brain image segmentation in the presence of partial volume averaging. The method uses additional classes to represe...
Aljaz Noe, James C. Gee
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