Browsing by Author "Vila Miranda, María Amparo"

Now showing items 1-9 of 9

    • A first approach to the multipurpose relational database server 

      Blanco, Ignacio J.; Martínez-Cruz, Carmen; Serrano Chica, José María; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
      Article
      Open Access
      In this paper, an architecture and an implementation of a multipurpose relational database server are proposed. This architecture enables classical queries to be executed, deductions to be made, and data mining operations to ...

    • A survey of methods to evaluate quantified sentences 

      Delgado Calvo-Flores, Miguel; Sánchez Fernández, Daniel; Serrano Chica, José María; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
      Article
      Open Access
      The evaluation of quantified sentences is used to solve several problems. Most of the methods proposed in the literature are not satisfactory because they do not verify some intuitive properties. In this paper we propose ...

    • An elemental processor of fuzzy SQL 

      Medina Rodríguez, Juan Miguel; Pons Capote, Olga; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1994)
      Article
      Open Access
      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 representation and manipulation mechanisms offered by ...

    • Client/server architecture for fuzzy relational databases 

      Medina Rodríguez, Juan Miguel; Pons Capote, Olga; Vila Miranda, María Amparo; Cubero Talavera, Juan Carlos (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
      Article
      Open Access
      This paper shows a FRDBMS architecture whose main characteristics are: 1) it is implemented entirely on classical RDBMS just using the resources provided by them, 2) it preserves all the operations and qualities of the ...

    • Fuzzy numbers, definitions and properties 

      Delgado Calvo-Flores, Miguel; Verdegay, José Luis; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1994)
      Article
      Open Access
      Two different definitions of a Fuzzy number may be found in the literature. Both fulfill Goguen's Fuzzification Principle but are different in nature because of their different starting points. The first one was introduced ...

    • Segmenting colour images on the basis of a fuzzy hierarchical approach 

      Chamorro Martínez, Jesús; Sánchez Fernández, Daniel; Prados Suárez, Belen; Galán Perales, Elena; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica., 2003)
      Article
      Open Access
      In this paper we deal with two problems related to imprecision in colour image segmentation processes: to decide whether a set of pixels verify the property "to be homogeneously coloured", and to represent the set of ...

    • Systems of possibilistic regressions: a case study in ecological inference 

      Donoso, Sergi; Marín Ruíz, Nicolás; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
      Article
      Open Access
      This work introduces how possibilistic regression can be used in the case of non symmetrical triangular membership functions, building a system of regressions, so that suitable restrictions for each particular problem can ...

    • Using fuzzy relational databases to represent agricultural and environmental information. An example within the scope of olive cultivation in Granada. 

      Serrano, Juan Manuel; Vila Miranda, María Amparo; Aranda, Victor; Delgado Calvo-Flores, Gabriel (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2001)
      Article
      Open Access
      A query system for several types of users and for information retrieval about olive cultivation and its environmental support in the province of Granada (Spain) is introduced. The system is based on fuzzy data and is ...

    • Using genetic feature selection for optimizing user profiles 

      Larsen, Henrik Legind; Marín Ruíz, Nicolás; Martín Bautista, Maria José; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
      Article
      Open Access
      Most of the techniques used in text classification are determined by the occurrences of the words (terms) appearing in the documents, combined with the user feedback over the documents retrieved. However, in our model, ...