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» A Case for Aggregate Networks
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MFCS
2009
Springer
15 years 11 months ago
Towards a Dichotomy of Finding Possible Winners in Elections Based on Scoring Rules
Abstract. To make a joint decision, agents (or voters) are often required to provide their preferences as linear orders. To determine a winner, the given linear orders can be aggre...
Nadja Betzler, Britta Dorn
APSEC
2000
IEEE
15 years 11 months ago
Enterprise modeling using class and instance models
Current object-oriented formalisms, such as UML, focus on describing class models and use instance models only for depicting scenarios. Little attention is being devoted to defini...
Rakesh Agarwal, Giorgio Bruno, Marco Torchiano
SIGSOFT
2000
ACM
15 years 11 months ago
COM revisited: tool-assisted modelling of an architectural framework
Designing architectural frameworks without the aid of formal modeling is error prone. But, unless supported by analysis, formal modeling is prone to its own class of errors, in wh...
Daniel Jackson, Kevin J. Sullivan
SIGMOD
1999
ACM
101views Database» more  SIGMOD 1999»
15 years 11 months ago
Join Synopses for Approximate Query Answering
In large data warehousing environments, it is often advantageous to provide fast, approximate answers to complex aggregate queries based on statistical summaries of the full data....
Swarup Acharya, Phillip B. Gibbons, Viswanath Poos...
ICDT
1997
ACM
138views Database» more  ICDT 1997»
15 years 11 months ago
Tractable Iteration Mechanisms for Bag Languages
Abstract. The goal of this paper is to study tractable iteration mechanisms for bags. The presence of duplicates in bags prevents iteration mechanisms developed in the context of s...
Latha S. Colby, Leonid Libkin