GEFRED: a generalized model of fuzzy relational databases

JM Medina, O Pons, MA Vila - Information sciences, 1994 - Elsevier
In this paper, we present a Fuzzy Relational Databases model whose main characteristics
are: the integration of previous models in the same framework, representation capabilities …

Towards the implementation of a generalized fuzzy relational database model

JM Medina, MA Vila, JC Cubero, O Pons - Fuzzy Sets and Systems, 1995 - Elsevier
This paper shows the necessary elements for the effective implementation of the
generalized fuzzy relational database model. From the model described in Medina et …

Aliança: A proposal for a fuzzy database architecture incorporating XML

RD Rodrigues, AJO Cruz, RT Cavalcante - Fuzzy sets and systems, 2009 - Elsevier
This paper presents a new fuzzy database architecture called Aliança. Fuzzy databases
usually store information and its associated meta-information in order to add context to the …

Representation of Fuzzy Knowledge in Relational Databases: FIRST-2

J Galindo, A Urrutia, M Piattini - Fuzzy Databases: Modeling, Design …, 2006 - igi-global.com
Abstract The Relational Model was developed by EF Codd of IBM and published in 1970. It
is currently the most used and has been a milestone in the history of databases …

Using OWA operator in flexible query processing

MA Vila, JC Cubero, JM Medina, O Pons - The ordered weighted …, 1997 - Springer
The use of OWA operators has been widely used in database contexts to process flexible
queries where linguistic quantifiers are involved. This paper is devoted to comparing these …

Fuzzy division in fuzzy relational databases: an approach

J Galindo, JM Medina, MC Aranda-Garrido - Fuzzy Sets and Systems, 2001 - Elsevier
An approach to calculate the relational division in fuzzy databases is presented, starting with
the GEFRED model. The tuples of the division are obtained with a possibility degree that …

Understanding the role of knowledge related to financial resources on decisions to attend graduate school

MS Kennedy, SK Lanier, KM Ehlert… - 2016 IEEE frontiers …, 2016 - ieeexplore.ieee.org
Although many factors exist as to why students choose not to pursue graduate study, one
significant barrier is the lack of knowledge regarding financial resources available to pursue …

Modeling data using fuzzy attributes

A Urrutia, J Galindo, M Piattini - 12th International Conference …, 2002 - ieeexplore.ieee.org
We present a proposal for the application of fuzzy logic to conceptual modeling as an
extension to the EER model. In order to do this, we extend some EER components to fuzzy …

[PDF][PDF] An elemental processor of fuzzy SQL

JM Medina, O Pons, MA Vila - Mathware and Soft Computing, 1994 - academia.edu
This paper reports an alternative for implementing an SQL fuzzy extension on a Fuzzy
Relational Database System. This proposal tries to build an FSQL processor using …

[PDF][PDF] Implementación de una base de datos relacional difusa un caso en la industria del cartón

L Jiménez, A Urrutia, J Galindo… - Revista colombiana de …, 2016 - researchgate.net
La manipulación de datos, con imprecisión e incertidumbre, es conocida por la comunidad
internacional en base de datos, con el término fuzzy, que ha sido traducido al español como …