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ICDE
2012
IEEE
224views Database» more  ICDE 2012»
13 years 9 months ago
Exploiting Common Subexpressions for Cloud Query Processing
—Many companies now routinely run massive data analysis jobs – expressed in some scripting language – on large clusters of low-end servers. Many analysis scripts are complex ...
Yasin N. Silva, Paul-Ake Larson, Jingren Zhou
VLDB
1993
ACM
138views Database» more  VLDB 1993»
15 years 10 months ago
Searching Large Lexicons for Partially Specified Terms using Compressed Inverted Files
There are many advantages to be gained by storing the lexicon of a full text database in main memory. In this paper we describe how to use a compressed inverted file index to sear...
Justin Zobel, Alistair Moffat, Ron Sacks-Davis
VLDB
1990
ACM
101views Database» more  VLDB 1990»
15 years 10 months ago
Non-Monotonic Knowledge Evolution in VLKDBs
Non-monotonic knowledge evolutions and exceptions constitute a complex theoritical and practical problem. The state of the art shows a rich and surprising diversity of approaches....
Christian Esculier
DATESO
2006
148views Database» more  DATESO 2006»
15 years 8 months ago
Conceptual Modeling for XML: A Survey
Recently XML is the standard format used for the exchange of data between information systems and is also frequently applied as a logical database model. If we use XML as a logical...
Martin Necasky
NIPS
2003
15 years 7 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