Información del autor
Autor Rodríguez, Juan Tinguaro |
Documentos disponibles escritos por este autor (75)
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This paper focuses on key issues related to aggregation tools within knowledge acquisition, and in particular for image processing. In particular, it is claimed the need of a number of simultaneous indices in order to evaluate the quality of a f[...]texto impreso
Rodríguez, Juan Tinguaro ; Franco, Camilo ; Vitoriano, Begoña ; Montero, Javier | Society for soft computing | 2011The concept of semantic antagonism refers to the human capability of characterizing those objects of an universe of discourse being dissimilar, significantly different from or opposite to a given concept, predicate or previous knowledge. This ca[...]texto impreso
Rodríguez, Juan Tinguaro ; Montero, Javier ; Vitoriano, Begoña ; Lopez, Victoria | Springer-Verlag Berlin Heidelberg | 2009Extraction of rules from databases for classification and decision tasks is an issue of growing importance as automated processes based on data are being required in these fields. An inductive methodology for data-based rules building and automa[...]texto impreso
Computing with words (CWW) explores the brain’s ability to handle and evaluate perceptions through language, i.e., by means of the linguistic representation of information and knowledge. On the other hand, standard preference structures examine [...]texto impreso
As recently proved in a previous work of Turunen, Tsoukias and Ozttirk, starting from an evidence pair (a, h) on the real unit square and associated with a propositional statement a, we can construct evidence matrices expressed in terms of four [...]texto impreso
Beliakov, G. ; Gomez, D. ; Jameson, Simon S ; Montero, Javier ; Rodríguez, Juan Tinguaro | Elsevier Science BV | 2017The problem of missing data is common in real-world applications of supervised machine learning such as classification and regression. Such data often gives rise to the need for functions defined for varying dimension. Here we propose optimizati[...]texto impreso
Villarino, Guillermo ; Gómez, Daniel ; Rodríguez, Juan Tinguaro ; Montero, Javier | Springer-Verlag | 2018Most supervised classification algorithms produce a soft score (either a probability, a fuzzy degree, a possibility, a cost, etc.) assessing the strength of the association between items and classes. After that, each item is assigned to the clas[...]texto impreso
Franco, Camilo ; Rodríguez, Juan Tinguaro ; Montero, Javier | World Scientific Publishing Company | 2014The polarity of concepts and the dialectic process by which its meaning emerges has been subject of interest since the ancient Greeks. Recently, the term Bipolarity has been used in social and mathematical sciences, referring to the measurement [...]texto impreso
Making decisions by learning preferences requires to consider semantical aspects dealing with the meaning and use of the preference concept. Examining recent developments on bipolarity, where concepts are measured/verified regarding a pair of op[...]texto impreso
En la gestión de desastres y emergencias, es crucial una valoración inicial correcta de las consecuencias de los fenómenos adversos para permitir una toma de decisiones adecuada. Sin embargo, no se requiere que esta valoración inicial sea necesa[...]texto impreso
A fully precise numerical evaluation of disasters’ effects is unrealistic in the time-pressured, highly uncertain decision context taking place just after a disaster strike. This is mainly due to some features of the available information in suc[...]texto impreso
Gauda, C. ; Gomez, D. ; Rodríguez, Juan Tinguaro ; Yáñez, Javier ; Montero, Javier | Atlantis Press | 2016In this paper we discuss some main image processing techniques in order to propose a classification based upon the output these methods provide. Because despite a particular image analysis technique can be supervised or unsupervised, and can all[...]texto impreso
Montero, Javier ; Gonzalez del Campo, Ramon ; Garmendia, Luis ; Gomez, D. ; Rodríguez, Juan Tinguaro | Elsevier Science INC | 2017-10-07In this paper, we postulate computation as a key element in assuring the consistency of a family of aggregation functions so that such a family of operators can be considered an aggregation rule. In particular, we suggest that the concept of an [...]texto impreso
Rodríguez, Juan Tinguaro ; López, V. ; Gomez, D. ; Vitoriano, Begoña ; Montero, Javier | IEEE | 2010The currently-in-use definition of aggregation function is analyzed in this paper, noting that the introduced variability in the dimension of information does not avoid some obvious dysfunctions. In particular, a potential abuse of the mathemati[...]texto impreso
In this preface we stress the relevance of the traditional collaboration between Engineering and any field of Mathematics in order to build intelligent decision-aid tools, as it is illustrated by the twelve papers contained in this Special Issue[...]texto impreso
Consistencia y estabilidad en operadores de agregación: Una aplicación al problema de datos perdidos
Gómez, Daniel ; Rojas, Karina ; Montero, Javier ; Rodríguez, Juan Tinguaro ; Beliakov, G. | Universidad de Zaragoza | 2014En este trabajo se analiza una cuestión clave respecto de la relación que debe existir entre operadores de una misma familia de operadores de agregación (FAO) {An}, a fin de comprender que ellos deben definir adecuadamente un todo consistente. S[...]texto impreso
Gómez, Daniel ; Rojas Patuelli, Karina ; Montero, Javier ; Rodríguez, Juan Tinguaro | Springer-Verlag Berlin Heidelberg | 2013In this work we analyze the key issue of the relationship that should hold between the operators in a family {An} of aggregation operators in order to understand they properly define a consistent whole. Here we extend some of the ideas about sta[...]texto impreso
In this work, we continue with a previous work in which we analyzed and defined notions of consistency, stability and continuity of a family of aggregation operators (FAO) when the data is unstructured. Here we use these concepts to tackle with [...]texto impreso
This article is devoted to the replication of the nternal methodologies of credit rating agencies for rating lassification using fuzzy algorithms. To achieve this goal, the usage of different types of fuzzy algorithms (evolutionary and non-evolu[...]texto impreso
Rodríguez, Juan Tinguaro ; Vitoriano, Begoña ; Montero, Javier | Academic Publishing House EXIT | 2008In this paper we stress the role that decision making, and therefore an underlying binary (bipolar) approach, plays in Atanassov's intuitionistic view of fuzzy sets. Moreover, we point out that such a bipolar view can be found in classical multi[...]texto impreso
Rodríguez, Juan Tinguaro ; Vitoriano, Begoña ; Montero, Javier ; Omaña, Antonio | World Scientific | 2008In this paper we present a decision support system for primary action of international organizations devoted to natural disaster relief In particular, we pretend to build up an expert system that taking into account past experiences will help de[...]texto impreso
Rojas, Karina ; Gómez, Daniel ; Montero, Javier ; Rodríguez, Juan Tinguaro ; Valdivia, Andrea ; Paiva, Francisco | Elsevier | 2014-04-16The interventions aimed at the early childhood are of a main interest in educational policy, since it is in this period when it is possible to produce a major impact in the subsequent human development. The quality of children's social environme[...]texto impreso
This paper aims to provide a comparative analysis of fuzzy rule-based systems and some standard statistical and other machine learning techniques in the context of the development of a decision support system (DSS) for the assessment of the seve[...]texto impreso
Frequently, the set of classes of a supervised classification problem presents an structure related to the specific features of each application context. However, standard classification models does not use to consider such an structure in their[...]texto impreso
Lopez, Victoria ; Montero, Javier ; Rodríguez, Juan Tinguaro | World Scientific Publishing Company | 2010This paper recalls some criticisms to the currently-in-use definition of aggregation function, concerning, firstly, the lack of conditions that guarantee the conceptual harmonization of the sequence of operators and, second, the possibility of t[...]texto impreso
Bustince, H. ; Barrenechea, Edurne ; Burusco, Ana ; Fernandez, Javier ; Rodríguez, Juan Tinguaro ; Montero, Javier ; Pagola, Miguel ; Gomez, D. | Springer International Publishing | 2015In 1979, Enric Trillas started to interest in in fuzzy connectives. His first paper on this topic was ”Funciones de negacin en la teora de subconjuntos difusos” ([9]) (Negation functions in the theory of fuzzy subsets), which appeared in Spanish[...]texto impreso
Fuzziness and bipolarity allow representing human knowledge, taking into account the gradual and the dialectic properties of language, focusing on the meaning of concepts. Under this cognitive and linguistic approach, we explore preference relat[...]texto impreso
One of the main challenges of fuzzy community detection problems is to be able to measure the quality of a fuzzy partition. In this paper, we present an alternative way of measure the quality of a fuzzy community detection output based on n-dime[...]texto impreso
A correct initial assessment of disaster consequences is crucial for an adequate decision-making in disaster and emergency management. However, such an initial assessment needs to be correct, but not necessarily fully precise, and thus it can be[...]texto impreso
Guada, Carely ; Gómez, Daniel ; Rodríguez, Juan Tinguaro ; Yáñez, Javier ; Montero, Javier | Atlantis Press | 2015In this paper, we present a way to define the concept of fuzzy image segmentation, which has not been clearly defined in the literature. In this work the term Fuzzy image segmentation is characterized by means of a fuzzy set over the set of edge[...]texto impreso
In this paper, we present a method to obtain a Fuzzy Image Segmentation from the hierarchical clustering algorithm Divide and Link. The Divide and Link algorithm consists on treating a digital image as a graph, then building spanning forest thro[...]texto impreso
Gomez, D. ; Yáñez, Javier ; Guada, Carely ; Rodríguez, Juan Tinguaro ; Montero, Javier | Elservier | 2015In this paper we introduce the concept of Fuzzy Image Segmentation, providing an algorithm to build fuzzy boundaries based on the existing relations between the fuzzy boundary set problem and the (crisp) hierarchical image segmentation problem. [...]texto impreso
Rodríguez, Juan Tinguaro ; Vitoriano, Begoña ; Montero, Javier | Pergamon-Elsevier Science Ltd | 2012Risks derived from natural disasters have a deeper impact than the sole damage suffered by the affected zone and its population. Because disasters can affect geostrategic stability and international safety, developed countries invest a huge amou[...]texto impreso
Guada, Carely ; Gomez, D. ; Rodríguez, Juan Tinguaro ; Yáñez, Javier ; Montero, Javier | Springer | 2017In this paper we discuss about graph approach in image segmentation. In first place, some main image processing techniques are classified based upon the output these methods provide. Then, a fuzzy image segmentation definition is presented becau[...]texto impreso
This paper studies the meaning of fuzzy preference under the light institionistic fuzzy sets. Intuitionism is revisted and intuitionistic fuzzy prefrerence relations are defined. A linguistic interpretation of strict and weak fuzzy preference is[...]texto impreso
Vitoriano, Begoña ; Rodríguez, Juan Tinguaro ; Tirado, Gregorio ; Martín Campo, F. Javier ; Ortuño, M. T. ; Montero, Javier | Taylor & Francis | 2015Providing emergency relief to the victims of natural disasters is a hugely complex process fraught with many challenging aspects: multiple uncertainties, little reliable information, scarcity of resources, a variety of involved entities, and so [...]texto impreso
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Preference semantics examine the meaning of the preference predicate, according to the way that alternatives can be understood and organized for decision making purposes. Through opposite-based semantics, preference structures can be characteriz[...]texto impreso
Beliakov, G. ; James, S. ; Gomez, D. ; Rodríguez, Juan Tinguaro ; Montero, Javier | TOTEM.COM.PL SP | 2015In this paper we develop a data-driven weight learning method for weighted quasiarithmetic means where the observed data may vary in dimension.texto impreso
Rodríguez, Juan Tinguaro ; Lopez, Victoria ; Montero, Javier ; Vitoriano, Begoña | Public University of Navarre | 2009Extraction of rules for classification and decision tasks from databases is an issue of growing importance as automated processes based on data are being required in these fields. Interpretability of rules is improved by defining classes for ind[...]texto impreso
Rodríguez, Juan Tinguaro ; Guada, C. ; Gomez, D. ; Yáñez, Javier ; Montero, Javier | Springer | 2016This paper proposes a method to evaluate hierarchical image segmentation procedures, in order to enable comparisons between different hierarchical algorithms and of these with other (non-hierarchical) segmentation techniques (as well as with edg[...]texto impreso
In this paper we revisit some classical multicriteria decision making aid models in order to stress the presence of dual concepts, which will be consistent with Bipolar Fuzzy Sets (sometimes called Atanassov's Intuitionistic Fuzzy Sets). In addi[...]texto impreso
Este artículo presenta un modelo de preferenciaaversión (P-A), el cual permite representar el proceso mediante el que un individuo racional (bajo una racionalidad de pérdidas y ganancias) ordena sus alternativas, en base a la agregación independ[...]texto impreso
Gómez, Daniel ; Rodríguez, Juan Tinguaro ; Montero, Javier ; Bustince, H. ; Barrenechea, E. | Elsevier | 2014In this paper we introduce the definition of n-dimensional overlap functions and we justify the axiomatization proposed in its definition. Basically, these functions allow to measure the degree of overlapping of several classes in a given classi[...]texto impreso
Humanitarian Non-Governmental Organisations (NGOs) play a growing role in the response to natural disasters, but despite being largely demanded, there is no available decision support system (DSS) specifically designed to address their problem. [...]texto impreso
Montero, Javier ; Rodríguez, Juan Tinguaro ; Franco, Camilo ; Bustince, Humberto ; Barrenechea, Edurne ; Gómez, Daniel | Springer | 2014In this paper, we want to stress that bipolar knowledge representation naturally allows a family of middle states which define as a consequence different kinds of bipolar structures. These bipolar structures are deeply related to the three types[...]texto impreso
Gomez, D. ; Zarrazola, E. ; Yáñez, Javier ; Rodríguez, Juan Tinguaro ; Montero, Javier | World Scientific Publishing Company | 2014A crisp image segmentation can be characterized in terms of the set of edges that separates the adjacent regions of the segmentation. Based on these edges, an alternative way to define a fuzzy image segmentation is introduced in this paper. In t[...]texto impreso
Gomez, D. ; Rodríguez, Juan Tinguaro ; Yáñez, Javier ; Montero, Javier | Elsevier Science INC | 2016One of the main challenges of fuzzy community detection problems is to be able to measure the quality of a fuzzy partition. In this paper, we present an alternative way of measuring the quality of a fuzzy community detection output based on n-di[...]texto impreso
This paper proposes a novel approach to analyze the relationship between interval valued fuzzy sets (IVFS) and Atanassov’s intuitionistic fuzzy sets (AIFS), based on the recently introduced notion of paired structure. It is suggested that the di[...]texto impreso
A general overview of partial comparability and preference theory allows examining the notion of bipolarity and its role in the development of some general preference structures. This bipolar approach comes natural to the framework of decision t[...]texto impreso
This paper analyzes the relationship between fuzziness and bipolarity, notions which were devised to address different kinds of uncertainty: linguistic imprecision, in the former, and knowledge relevance and character or polarity, in the latter.[...]texto impreso
In this paper we stress the relevance of those fuzzy models that impose a couple of simultaneous views in order to represent concepts. In particular, we point out that the basic model to start with should contain at least two somehow opposite va[...]texto impreso
In this paper we want to stress the relevance of paired fuzzy sets, as already proposed in previous works of the authors, as a family of fuzzy sets that offers a unifying view for different models based upon the opposition of two fuzzy sets, sim[...]texto impreso
Montero, Javier ; Bustince, H. ; Franco, C. ; Rodríguez, Juan Tinguaro ; Gómez, Daniel ; Pagola, Miguel ; Fernandez, Javier ; Barrenechea, Edurne | University of Copenhagen, Department of Food and Resource Economics | 2014In this strictly positional paper we propose a general approach to bipolar knowledge representation, where the meaning of concepts can be modelled by examining their decomposition into opposite and neutral categories. In particular, it is the se[...]texto impreso
Rodríguez, Juan Tinguaro ; Gómez, Daniel ; Yáñez, Javier ; Montero, Javier ; Franco, Camilo | Atlantis Press | 2015In this paper we present a new class of fuzzy sets, paired fuzzy sets, that tries to overcome any conflict between families of fuzzy sets that share a main characteristic: that they are generated from two basic opposite fuzzy sets. Hence, the fi[...]texto impreso
Opposition-based models are a current hot-topic in knowledge representation. The point of this paper is to suggest that opposition can be in fact introduced at two different levels, those of the predicates of interest being represented (as short[...]texto impreso
Montero, Javier ; Bustince, H. ; Franco, C. ; Rodríguez, Juan Tinguaro ; Gómez, Daniel ; Pagola, M. ; Fernández, J. ; Barrenechea, E. | Elservier | 2016In this position paper we propose a consistent and unifying view to all those basic knowledge representation models that are based on the existence of two somehow opposite fuzzy concepts. A number of these basic models can be found in fuzzy logi[...]texto impreso
Rodríguez, Juan Tinguaro ; Rios, Camilo Franco de los ; Montero, Javier ; Lu, Jie | Springer- verlag | 2014The evidence coming from cognitive psychology and linguistics shows that pairs of reference concepts (as e. g. good/bad, tall/short, nice/ugly, etc.) play a crucial role in the way we everyday use and understand natural languages in order to ana[...]texto impreso
In this paper we consider a complete fuzzy preference structure, defined by means of a constructive approach associated to the necessary learning process in a decision making problem. Preference relations are successively assigned over a given s[...]texto impreso
Different types of inexactness can be represented by fuzzy sets: vagueness, where there are no precise boundaries, ambiguity, when more than one distinguishable concept is described, generality, such that a word applies to a variety of situation[...]texto impreso
Abstract Fuzzy preference and aversion relations allow measuring in a gradual manner the attitude of the individual regarding some pair of alternatives. Following the Preference-Aversion (PA) model, previously introduced for identifying the subj[...]texto impreso
Classification problems often play an important role in many decision contexts. Therefore, the design of decision support tools to operate in such contexts usually involves the formulation of adequate classification models. Fuzzy rule-based clas[...]texto impreso
Guada, Carey ; Gomez, D. ; Rodríguez, Juan Tinguaro ; Yáñez, Javier ; Montero, Javier | CAEPIA'15 | 2015El propósito de este trabajo es presentar una forma de como obtener una segmentación borrosa de imágenes a través de un algoritmo de segmentación jerárquica de imágenes. En primer lugar, para alcanzar este objetivo, se definen dos maneras de seg[...]texto impreso
Montero, Javier ; Ardizone García, Juan Alfonso ; Franco, Camilo ; García-Santesmases, J M ; Garmendia, L. ; Gómez, Daniel ; González del Campo Rodríguez Barbero, Ramón ; Lopez, Victoria ; Muñoz, Susana ; Ortuño, M. T. ; Roanes-Lozano, E. ; Rodríguez, Juan Tinguaro ; Rojas, Karina ; Tirado, Gregorio ; Vitoriano, Begoña ; Yáñez, Javier ; Zarrazola, E. | Instituto de Geociencias, IGEO (CSIC-UCM) | 2011texto impreso
Montero, Javier ; Omaña, Antonio ; Rodríguez, Juan Tinguaro ; Vitoriano, Begoña | Universidad de Murcia. Departamento de Estadística e Investigación Operativa | 2009Resumen Se presenta un sistema de ayuda a la decisión diseñado para dar respaldo a las organizaciones no gubernamentales (ONG) que realizan operaciones internacionales de respuesta a desastres naturales. En particular, el sistema proporciona una[...]texto impreso
A menudo, el conjunto de clases de un problema de clasificación presenta una estructura en relación con las características propias de cada contexto de aplicación. Sin embargo, los modelos de clasificación habituales no suelen contemplar esa est[...]texto impreso
Properties related with aggregation operators functions have been widely studied in literature. Nevertheless, few efforts have been dedicated to analyze those properties related with the family of operators in a global way. What should be the re[...]texto impreso
Montero, Javier ; Rodríguez, Juan Tinguaro ; Gomez, D. ; Bustince, H. ; Fernandez, J. F. | Edicions UIB | 2009This paper stresses the relevance of taking into account that quite often information is structured, and therefore a standard aggregation focuss may produce misleading results, if such an approach assumes in fact that information does not presen[...]texto impreso
Aggregation functions have been widely studied in literature. Nevertheless, few efforts have been dedicated to analyze those properties related with the family of operators in a global way. In this work, we analyze the stability in a family of a[...]texto impreso
Rojas, Karina ; Gómez, Daniel ; Montero, Javier ; Rodríguez, Juan Tinguaro | Elsevier Science BV | 2013-10-01In this paper we analyze the notion of family of aggregation operators (FAO), also refereed to as extended aggregation functions (EAF), i.e., a set of aggregation operators defined in the unit interval which aggregate several input values into a[...]texto impreso
In this reviewing paper, we recall the main results of our papers [24, 31] where we introduced two paraconsistent semantics for Pavelka style fuzzy logic. Each logic formula a is associated with a 2 x 2 matrix called evidence matrix. The two sem[...]texto impreso
In this paper we revise the three types of bipolarity recently proposed by Dubois and Prade, focussing on how the basic structure is being built up. In this way we can clarify key differences between them, and formalize to what extent some struc[...]texto impreso
En este artículo se presentan los resultados de una experiencia realizada con dos grupos de alumnos,uno de Ciencias Sociales y otro de Ciencias Matemáticas, con la finalidad de observar las posibles disimilitudes en la percepción y uso de difere[...]texto impreso
El objetivo de esta comunicación es proponer una ormulación axiomática del concepto de antagonismo semántico,relacionando dicha formulación con la de antónimo. Particularmente,la noción de antónimo está estrechamente ligada a polaridades lingüís[...]texto impreso
El objetivo de este trabajo es presentar una metodología que permita clarificar las relaciones existentes entre las nociones de incertidumbre borrosa (fuzziness) y bipolaridad. Esta metodología está basada en el uso de extensiones continuas 4-va[...]