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SIAMSC
2010
104views more  SIAMSC 2010»
13 years 5 months ago
BDDC Preconditioners for Spectral Element Discretizations of Almost Incompressible Elasticity in Three Dimensions
Abstract. BDDC algorithms are constructed and analyzed for the system of almost incompressible elasticity discretized with Gauss-Lobatto-Legendre spectral elements in three dimensi...
Luca F. Pavarino, Olof B. Widlund, Stefano Zampini
SIGKDD
2010
128views more  SIGKDD 2010»
13 years 5 months ago
On cross-validation and stacking: building seemingly predictive models on random data
A number of times when using cross-validation (CV) while trying to do classification/probability estimation we have observed surprisingly low AUC's on real data with very few...
Claudia Perlich, Grzegorz Swirszcz
SIGKDD
2010
259views more  SIGKDD 2010»
13 years 5 months ago
Activity recognition using cell phone accelerometers
Mobile devices are becoming increasingly sophisticated and the latest generation of smart cell phones now incorporates many diverse and powerful sensors. These sensors include GPS...
Jennifer R. Kwapisz, Gary M. Weiss, Samuel Moore
SIGMOD
2010
ACM
362views Database» more  SIGMOD 2010»
13 years 5 months ago
Data warehousing and analytics infrastructure at facebook
Scalable analysis on large data sets has been core to the functions of a number of teams at Facebook - both engineering and nonengineering. Apart from ad hoc analysis of data and ...
Ashish Thusoo, Zheng Shao, Suresh Anthony, Dhruba ...
SIGMOD
2010
ACM
132views Database» more  SIGMOD 2010»
13 years 5 months ago
Durable top-k search in document archives
We propose and study a new ranking problem in versioned databases. Consider a database of versioned objects which have different valid instances along a history (e.g., documents i...
Leong Hou U, Nikos Mamoulis, Klaus Berberich, Srik...
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