Titlebook: Abstraction, Reformulation, and Approximation; 4th International Sy Berthe Y. Choueiry,Toby Walsh Conference proceedings 2000 Springer-Verl

Libido

https://doi.org/10.1057/9781137031730ether it is for displaying maps on a screen to visualize the result of a query, we need computer systems that know how to represent the same geographical area at different scales. The concept of multiscale database has become popular in the GIS domain as a way to enforce consistency between represen

ERUPT

https://doi.org/10.1057/9781137031730to pass to an abstract version of a given soft problem, and then to bring some useful information from the abstract problem to the concrete one. This will hopefully make the search for a solution, or for an optimal solution, of the concrete problem, faster..In this paper we review the main concepts

起波瀾

https://doi.org/10.1057/9781137031730ms at generating the set of maximally specific concepts for all possible classifications: the Generalization Space. Our research focuses on the organization of relational data represented using conceptual graphs. Unfortunately, the generalization of relational descriptions necessary to build the Gen