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NIPS
2003
15 years 8 months ago
When Does Non-Negative Matrix Factorization Give a Correct Decomposition into Parts?
We interpret non-negative matrix factorization geometrically, as the problem of finding a simplicial cone which contains a cloud of data points and which is contained in the posi...
David L. Donoho, Victoria Stodden
DOLAP
2010
ACM
15 years 4 months ago
Towards OLAP query reformulation in peer-to-peer data warehousing
Inter-business collaborative contexts prefigure a distributed scenario where companies organize and coordinate themselves to develop common and shared opportunities. Traditional b...
Matteo Golfarelli, Federica Mandreoli, Wilma Penzo...
PODS
2009
ACM
124views Database» more  PODS 2009»
16 years 7 months ago
Indexing uncertain data
Querying uncertain data has emerged as an important problem in data management due to the imprecise nature of many measurement data. In this paper we study answering range queries...
Pankaj K. Agarwal, Siu-Wing Cheng, Yufei Tao, Ke Y...
SSDBM
2003
IEEE
105views Database» more  SSDBM 2003»
15 years 12 months ago
Development of an Informatics Tool for Crystallography Laboratory Administrators
With increased demand for storage of scientific data comes a corresponding demand for efficient retrieval mechanisms necessary for analytical and reporting purposes. As is often...
Leah Sandvoss, Dennis P. Groth
EDBT
2009
ACM
90views Database» more  EDBT 2009»
16 years 1 months ago
Privacy-preserving data mashup
Mashup is a web technology that combines information from more than one source into a single web application. This technique provides a new platform for different data providers ...
Noman Mohammed, Benjamin C. M. Fung, Ke Wang, Patr...