### Sumari

Ara es mostren els items 1-8 de 8

• #### Propositional calculus for adjointness lattices ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2001)
Article
Accés obert
Recently, Morsi has developed a complete syntax for the class of all adjointness algebras $\left( L,\leq ,A,K,H\right)$. There, $\left( L,\leq \right)$ is a partially ordered set with top element $1$, $K$ is a conjunction ...
• #### A fuzzy and intuitionistic fuzzy account of the Liar paradox ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
Article
Accés obert
The Liar paradox, or the sentence "What I am now saying is false." and its various guises have been attracting the attention of logicians and linguists since ancient times. A commonly accepted treatment of the Liar ...
• #### Fuzzy Markov chains: uncertain probabilities ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
Article
Accés obert
We consider finite Markov chains where there are uncertainties in some of the transition probabilities. These uncertainties are modeled by fuzzy numbers. Using a restricted fuzzy matrix multiplication we investigate the ...
• #### Scalar cardinalities for divisors of a fuzzy cardinality ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
Article
Accés obert
The cardinality of a finite fuzzy set can be defined as a scalar or a fuzzy quantity. The fuzzy cardinalities are represented by means the generalized natural numbers, where it is possible to define arithmetical operations, ...
• #### Learning imprecise semantic concepts from image databases ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
Article
Accés obert
In this paper we introduce a model to represent high-level semantic concepts that can be perceived in images. The concepts are learned and represented by means of a set of association rules that relate the presence of ...
• #### Fuzzy multicriteria decision making applied to the strategic plan of Valencia ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
Article
Accés obert
We present a fuzzy multicriteria decision making to get the ranking of several projects presented to the major council of Valencia whose final aim is to define the future urbanistic structure of the city. This technique ...
• #### Fuzzy controller applications in stand-alone photovoltaic systems ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
Article
Accés obert
One of foremost problems in stand-alone photovoltaic systems consists on the election of a strategy for charge controllers. The charge controllers main function is the accumulation system protection, and this leads ...
• #### Flexible information retrieval: some research trends ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
Article
Accés obert
In this paper some research trends in the field of Information Retrieval are presented. The focus is on the definition of flexible systems, i.e. systems that can represent and manage the vagueness and uncertainty which is ...