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VLDB
1993
ACM
116views Database» more  VLDB 1993»
15 years 2 months ago
Algebraic Optimization of Computations over Scientific Databases
Although scientific data analysis increasingly requires accessandmanipulation of large quantitiesof data,current databasetechnology fails to meet the needsof scientific processing...
Richard H. Wolniewicz, Goetz Graefe
SOUPS
2010
ACM
15 years 1 months ago
Encountering stronger password requirements: user attitudes and behaviors
Text-based passwords are still the most commonly used authentication mechanism in information systems. We took advantage of a unique opportunity presented by a significant change...
Richard Shay, Saranga Komanduri, Patrick Gage Kell...
C5
2004
IEEE
15 years 1 months ago
Enabling Social Dimensions of Learning through a Persistent, Unified, Massively Multi-User, and Self-Organizing Virtual Environm
Existing online learning experiences lack the social dimension that characterizes learning in the real world. This social dimension extends beyond the traditional classroom into t...
Julian Lombardi, Mark P. McCahill
CVPR
2004
IEEE
15 years 1 months ago
Camera Calibration from a Single Night Sky Image
We present a simple and universal camera calibration method. Instead of extensive setups we are exploiting the accurate angular positions of fixed stars. High precision is achieve...
Andreas Klaus, Joachim Bauer, Konrad F. Karner, Pi...
CLEF
2006
Springer
15 years 1 months ago
Blind Relevance Feedback and Named Entity Based Query Expansion for Geographic Retrieval at GeoCLEF 2006
The participation of the University of Hildesheim focused on the monolingual German and English and the bilingual German English tasks of GeoCLEF 2006. Based on the results of Geo...
Kerstin Bischoff, Thomas Mandl, Christa Womser-Hac...