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SIGMOD
1996
ACM
99views Database» more  SIGMOD 1996»
15 years 10 months ago
A Query Language for Multidimensional Arrays: Design, Implementation, and Optimization Techniques
While much recent research has focussed on extending databases beyond the traditional relational model, relatively little has been done to develop database tools for querying data...
Leonid Libkin, Rona Machlin, Limsoon Wong
ICDE
1994
IEEE
103views Database» more  ICDE 1994»
15 years 10 months ago
A Multi-Set Extended Relational Algebra - A Formal Approach to a Practical Issue
The relational data model is based on sets of tuples, i.e. it does not allow duplicate tuples in a relation. Many database languages and systems do require multi-set place, the hi...
Paul W. P. J. Grefen, Rolf A. de By
EVOW
1994
Springer
15 years 10 months ago
Competitive Evolution: A Natural Approach to Operator Selection
One of the main problems in applying evolutionary optimisation methods is the choice of operators and parameter values. This paper propose a competitive evolution method, in which ...
Q. Tuan Pham
ASPLOS
1992
ACM
15 years 10 months ago
Parity Declustering for Continuous Operation in Redundant Disk Arrays
We describe and evaluate a strategy for declustering the parity encoding in a redundant disk array. This declustered parity organization balances cost against data reliability and...
Mark Holland, Garth A. Gibson
IUI
1993
ACM
15 years 10 months ago
Reducing user effort in collaboration support
incompatibility. We introduce Mona, an operational email system embodying this automatic approach. Mona establishes conversation context independently of user actions through the ...
Andy Cockburn, Harold W. Thimbleby
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