The handling of user preferences is becoming an increasingly important issue in present-
day information systems. Among others, preferences are used for information filtering and …

The handling of user preferences is becoming an increasingly important issue in present-
day information systems. Among others, preferences are used for information filtering and …

Publisher Summary This chapter presents a rich preference model tailored for database
systems. Preferences as strict partial orders have an intuitive semantics; they may be …

Preferences have been traditionally studied in philosophy, psychology, and economics and
applied to decision making problems. Recently, they have attracted the attention of …

Preference SQL is a declarative extension of standard SQL by strict partial order
preferences, behaving like soft constraints under the BMO query model. Preference queries …

The advent of the World Wide Web has created an explosion in the available on-line
information. As the range of potential choices expand, the time and effort required to sort …

Publisher Summary When searching for items to be purchased over the Internet, customer
wishes and preferences are becoming increasingly important. Current search engines can …

Permission to copy without fee all or part of this material is granted provided that the copies
are not made or distributed for direct commercial advantage, the VLDB copyright notice and …

Users often need to optimize the selection of objects by appropriately weighting the
importance of multiple object attributes. Such optimization problems appear often in …

The manipulation of databases is an integral part of a world which is becoming increasingly
and pervasively information-focused. This book puts forward a suggestion to advocate …