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» Maximum likelihood analysis of algorithms and data structure...
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COMPGEOM
2009
ACM
14 years 2 months ago
Persistent cohomology and circular coordinates
Nonlinear dimensionality reduction (NLDR) algorithms such as Isomap, LLE and Laplacian Eigenmaps address the problem of representing high-dimensional nonlinear data in terms of lo...
Vin de Silva, Mikael Vejdemo-Johansson
BMCBI
2010
117views more  BMCBI 2010»
13 years 8 months ago
MetAssimulo: Simulation of Realistic NMR Metabolic Profiles
Background: Probing the complex fusion of genetic and environmental interactions, metabolic profiling (or metabolomics/metabonomics), the study of small molecules involved in meta...
Harriet J. Muncey, Rebecca Jones, Maria De Iorio, ...
ICDE
2008
IEEE
131views Database» more  ICDE 2008»
14 years 9 months ago
Parallel Evaluation of Composite Aggregate Queries
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
Lei Chen 0003, Christopher Olston, Raghu Ramakrish...
VIS
2003
IEEE
121views Visualization» more  VIS 2003»
14 years 9 months ago
Hierarchical Clustering for Unstructured Volumetric Scalar Fields
We present a method to represent unstructured scalar fields at multiple levels of detail. Using a parallelizable classification algorithm to build a cluster hierarchy, we generate...
Christopher S. Co, Bjørn Heckel, Hans Hagen...
VLDB
1998
ACM
136views Database» more  VLDB 1998»
14 years 18 hour ago
Materialized View Selection for Multidimensional Datasets
To fulfill the requirement of fast interactive multidimensional data analysis, database systems precompute aggregate views on some subsets of dimensions and their corresponding hi...
Amit Shukla, Prasad Deshpande, Jeffrey F. Naughton