Typicality based on soft aggregations in crisp object oriented databases

Author

Bordogna, Gloria ; Pasi, Gabriella

Author_Institution

Ist. per le Tecnologie Inf. Mutimediali, CNR, Milano, Italy

fYear

1999

fDate

36342

Firstpage

376

Lastpage

380

Abstract

A method to automatically compute typical objects for a crisp object oriented database is proposed, in which typical objects are regarded as representatives of a fuzzy majority of the stored objects. A vector space model is adopted in which the object instances of a class are represented by vectors. The typical object of a class is derived as the “closest” vector to the fuzzy majority of the instance vectors. The use of typical objects is investigated to support the computation of default values in case of null values, to provide a means for database summarization and fuzzification

Keywords

abstract data types; fuzzy set theory; object-oriented databases; closest vector; crisp object oriented databases; database summarization; default values; fuzzification; fuzzy majority; instance vectors; null values; object instances; soft aggregations; typical objects; vector space model; Content management; Data models; Decision making; Fuzzy set theory; Information management; Null value; Object oriented databases; Object oriented modeling; Relational databases; Soil;

fLanguage

English

Publisher

ieee

Conference_Titel

Fuzzy Information Processing Society, 1999. NAFIPS. 18th International Conference of the North American

Conference_Location

New York, NY

Print_ISBN

0-7803-5211-4

Type

conf

DOI

10.1109/NAFIPS.1999.781718

Filename

781718