136 search results - page 7 / 28 » Some characterizations based on double aggregation operators |
DBSEC
2006
13 years 10 months ago
2006
In the Database-As-a-Service (DAS) model, clients store their database contents at servers belonging to potentially untrusted service providers. To maintain data confidentiality, ...
CCIA
2009
Springer
13 years 9 months ago
2009
Springer
Abstract. The operation of base contraction was successfully characterized for a very general class of logics using the notion of remainder sets. Although, in the general case, thi...
AAAI
2006
13 years 10 months ago
2006
Voting (or rank aggregation) is a general method for aggregating the preferences of multiple agents. One voting rule of particular interest is the Kemeny rule, which minimizes the...
ADBIS
2000
Springer
14 years 28 days ago
2000
Springer
Queries involving aggregation are typical in a number of database research areas, such as data warehousing, global information systems and mobile computing. One of the main ideas ...
TKDE
2012
11 years 11 months ago
2012
—Preparing a data set for analysis is generally the most time consuming task in a data mining project, requiring many complex SQL queries, joining tables and aggregating columns....