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PODS
1997
ACM
117views Database» more  PODS 1997»
15 years 10 months ago
On the Analysis of Indexing Schemes
We consider the problem of indexing general database workloads (combinations of data sets and sets of potential queries). We de ne a framework for measuring the eciency of an ind...
Joseph M. Hellerstein, Elias Koutsoupias, Christos...
DOOD
1997
Springer
155views Database» more  DOOD 1997»
15 years 10 months ago
Incremental Updates for Materialized OQL Views
Abstract. This work discusses the CROQUE approach to the maintenance problem for materialized views. In a CROQUE database, application-speci ed collections (type extents or classes...
Dieter Gluche, Torsten Grust, Christof Mainberger,...
EDBT
1994
ACM
149views Database» more  EDBT 1994»
15 years 10 months ago
On the Estimation of Join Result Sizes
Abstract. Good estimates of join result sizes are critical for query optimization in relational database management systems. We address the problem of incrementally obtaining accur...
Arun N. Swami, K. Bernhard Schiefer
LREC
2008
107views Education» more  LREC 2008»
15 years 8 months ago
Integrating Metaphor Information into RDF/OWL EuroWordNet
In this paper, we discuss the integration of metaphor information into the RDF/OWL representation of EuroWordNet. First, the lexical database WordNet and its variants are presente...
Ernesto William De Luca, Birte Lönneker-Rodma...
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