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APPROX
2006
Springer
14 years 1 months ago
2006
Springer
We prove that any real matrix A contains a subset of at most 4k/ + 2k log(k + 1) rows whose span "contains" a matrix of rank at most k with error only (1 + ) times the er...
IWC
2011
13 years 4 months ago
2011
The selection of users for participation in IT projects involves trade-offs between multiple criteria, one of which is selecting a representative cross-section of users. This crite...
IVC
2008
13 years 9 months ago
2008
Reversible jump Markov chain Monte Carlo (RJMCMC) is a recent method which makes it possible to construct reversible Markov chain samplers that jump between parameter subspaces of...
HUC
2003
Springer
14 years 2 months ago
2003
Springer
Abstract. Three tools for acquiring data about people, their behavior, and their use of technology in natural settings are described: (1) a context-aware experience sampling tool, ...
DGO
2003
13 years 11 months ago
2003
In environments containing many text search engines a federated search system provides people with a single point of access. When search engines are managed by independent organiz...