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DBPL
1993
Springer
141views Database» more  DBPL 1993»
14 years 26 days ago
Some Properties of Query Languages for Bags
In this paper we study the expressive power of query languages for nested bags. We de ne the ambient bag language by generalizing the constructs of the relational language of Brea...
Leonid Libkin, Limsoon Wong
WSC
2007
13 years 11 months ago
What I wish they would have taught me (or that I would have better remembered!) in school
This panel reflects upon their experiences as simulation professionals and shares their thoughts regarding elements of their simulation education that they have found most helpful...
Charles R. Standridge, Daniel A. Finke, Carley Jur...
COLCOM
2007
IEEE
13 years 10 months ago
Maintaining constraints expressed as formulas in collaborative systems
—Constraints allow users to declare relationships among objects and let the constraint systems maintain and satisfy these relationships. Formulas have been adopted to express con...
Kai Lin, David Chen, R. Geoff Dromey, Chengzheng S...
CSCW
2008
ACM
13 years 8 months ago
Context-linked virtual assistants for distributed teams: an astrophysics case study
There is a growing need for distributed teams to analyze complex and dynamic data streams and make critical decisions under time pressure. Via a case study, we discuss potential g...
Sarah S. Poon, Rollin C. Thomas, Cecilia R. Aragon...
SIAMSC
2008
123views more  SIAMSC 2008»
13 years 8 months ago
Balanced Incomplete Factorization
In this paper we present a new incomplete factorization of a square matrix into triangular factors in which we get standard LU or LDLT factors (direct factors) and their inverses (...
Rafael Bru, José Marín, José ...