A fuzzy object-oriented data model for managing vague and uncertain information

Abstract

In this paper, a fuzzy Object‐Oriented Data model (FOOD) is defined based on the extension of a Graph‐based Object model (D. Lucarella and A. Zanzi “A graph‐oriented data model,” in Database and Expert Systems Applications, R. Wagner and H. Toma, Eds., Springer‐Verlag, Berlin, 1996, pp. 197–206), in order to manage both crisp and imperfect information. These capabilities are requisites of many current applications dealing with data of different nature and with complex interrelationships. The model is based on a visual paradigm which supports both the representation of the data semantics and the direct browsing of the information. In the extended model both the database scheme and instances are represented as directed labeled graphs in which the fuzzy and uncertain information has its own representation. ©1999 John Wiley & Sons, Inc.

An intelligent fuzzy object-oriented database framework for video database applications

“…For instance, [5,15] introduce the conceptual ExIFO 2 model, which is a fuzzy object-oriented model supporting uncertainty representation. Another study in [27] extends a graph-based object model to represent imprecision and uncertainty, then utilizes the model to define a fuzzy objectoriented model. Although there are a number of studies on fuzzy conceptual modeling, only few studies incorporating fuzziness with conceptual modeling of video data exist.…”

Fuzzy Techniques in Object Based Modeling

“…When we are implementing the class intentional point of view, we present the use of inclusion degree with fuzzy aggregation relationship [5].…”

“…The fuzzy information is also handled with relational database concepts. Recent efforts have extended these results to object oriented databases by introducing the related notions of classes, generalizations, specialization and inheritance [5,6,7,8]. The uncertainty is handled at data level and conceptual model level both [9,10,11].…”

Analysis of Fuzzy Query Processing and Optimization in Fuzzy Object Oriented Database

“…Accordingly, in the fuzzy OODB [7][8] [9], an object belongs to a class with a membership degree of [0, 1] and a class is the subclass of another class with degree of [0, 1] too [9]. In the OODB, the specification of a class includes the definition of ISA relationships, attributes and methods implementations.…”