• IIVFDT: ignorance functions based interval-valued fuzzy decision tree with genetic tuning 

      Sanz Delgado, José Antonio Upna Orcid; Fernández, Alberto; Bustince Sola, Humberto Upna Orcid; Herrera, Francisco (World Scientific Publishing Company, 2012)   Artículo / Artikulua  OpenAccess
      The choice of membership functions plays an essential role in the success of fuzzy systems. This is a complex problem due to the possible lack of knowledge when assigning punctual values as membership degrees. To face this ...
    • Image reduction using means on discrete product lattices 

      Beliakov, Gleb Upna; Bustince Sola, Humberto Upna Orcid; Paternain Dallo, Daniel Upna Orcid (IEEE, 2012)   Artículo / Artikulua  OpenAccess
      We investigate the problem of averaging values on lattices, and in particular on discrete product lattices. This problem arises in image processing when several color values given in RGB, HSL, or another coding scheme, ...
    • Improving the performance of fuzzy rule-based classification systems with interval-valued fuzzy sets and genetic amplitude tuning 

      Sanz Delgado, José Antonio Upna Orcid; Fernández, Alberto; Bustince Sola, Humberto Upna Orcid; Herrera, Francisco (Elsevier, 2010)   Artículo / Artikulua  OpenAccess
      Among the computational intelligence techniques employed to solve classification problems, Fuzzy Rule-Based Classification Systems (FRBCSs) are a popular tool because of their interpretable models based on linguistic ...
    • INFFC: an iterative class noise filter based on the fusion of classifiers with noise sensitivity control 

      Sáez, José Antonio; Galar Idoate, Mikel Upna Orcid; Luengo, Julián; Herrera, Francisco (Elsevier, 2015)   Artículo / Artikulua  OpenAccess
      In classification, noise may deteriorate the system performance and increase the complexity of the models built. In order to mitigate its consequences, several approaches have been proposed in the literature. Among them, ...
    • Internet traffic shaping for IP over WDM links with source output buffering or multiple parallel wavelengths 

      Aracil Rico, Javier Upna; Izal Azcárate, Mikel Upna Orcid; Morató Osés, Daniel Upna Orcid (Kluwer Academic Publishers, 2001)   Artículo / Artikulua  OpenAccess
      Since the number of wavelengths per fiber is growing in an exponential fashion the over- flow traffic can be routed through overflow lightpaths, thus providing an ideal network with near-infinite capacity and almost ...
    • Interval type-2 fuzzy sets are generalization of interval-valued fuzzy sets: towards a wider view on their relationship 

      Bustince Sola, Humberto Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid; Hagras, Hani; Herrera, Francisco; Pagola Barrio, Miguel Upna Orcid; Barrenechea Tartas, Edurne Upna Orcid (IEEE, 2015)   Artículo / Artikulua  OpenAccess
      In this paper, we will present a wider view on the relationship between interval-valued fuzzy sets and interval type- 2 fuzzy sets where we will show that interval-valued fuzzy sets are a particular case of the interval ...
    • Interval-valued Atanassov intuitionistic OWA aggregations using admissible linear orders and their application to decision making 

      Miguel Turullols, Laura de Upna Orcid; Bustince Sola, Humberto Upna Orcid; Pekala, Barbara; Bentkowska, Urszula; Silva, Ivanoska da; Bedregal, Benjamin Upna Orcid; Mesiar, Radko; Ochoa Lezaun, Gustavo Upna Orcid (IEEE, 2016)   Artículo / Artikulua  OpenAccess
      Based on the definition of admissible order for interval-valued Atanassov intuitionistic fuzzy sets, we study OWA operators in these sets distinguishing between the weights associated to the membership and those associated ...
    • Intuitionistic fuzzy relations (Part I) 

      Burillo López, Pedro Upna; Bustince Sola, Humberto Upna Orcid (Universitat Politècnica de Catalunya, 1995)   Artículo / Artikulua  OpenAccess
      This paper introduces the concept of intuitionistic fuzzy relation. We also study the choice of t-norms and t-conorms which must be done in order that the composition of intuitionistic fuzzy relations fulfills the largest ...
    • Intuitionistic fuzzy relations (Part II). Effect of Atanassov's operators on the properties of the intuitionistic fuzzy relations 

      Burillo López, Pedro Upna; Bustince Sola, Humberto Upna Orcid (Universitat Politècnica de Catalunya, 1995)   Artículo / Artikulua  OpenAccess
      In this paper we study the effect of Atanassov's operator on the properties of properties reflexive, symmetric, antisymmetric, perfect antisymmetric and transitive intuitionistic fuzzy relations. We finish the paper analysing ...
    • Is the phenotype designation by PSP-MDS criteria stable throughout the disease course and consistent with tau distribution? 

      Sánchez Ruiz de Gordoa, Javier Upna Orcid; Zelaya Huerta, María Victoria Upna Orcid; Tellechea-Aramburo, Paula; Acha Santamaría, Blanca Upna Orcid; Roldán, Miren; López Molina, Carlos Upna Orcid; Coca, Valle; Galbete Jiménez, Arkaitz Upna Orcid; Mendióroz Iriarte, Maite; Erro, M. Elena (Frontiers Media, 2022)   Artículo / Artikulua  OpenAccess
      Introduction: the MDS-PSP criteria have shown high sensitivity for the PSP diagnosis, but do not discriminate the phenotype diversity. Our purpose was to search for anatomopathological differences among PSP phenotypes ...
    • IVTURS: A linguistic fuzzy rule-based classification system based on a new interval-valued fuzzy reasoning method with tuning and rule selection 

      Sanz Delgado, José Antonio Upna Orcid; Fernández, Alberto; Bustince Sola, Humberto Upna Orcid; Herrera, Francisco (IEEE, 2013)   Artículo / Artikulua  OpenAccess
      Interval-valued fuzzy sets have been shown to be a useful tool for dealing with the ignorance related to the definition of the linguistic labels. Specifically, they have been successfully applied to solve classification ...
    • Join and meet operations for type-2 fuzzy sets with non-convex secondary memberships 

      Ruiz, Gonzalo; Hagras, Hani; Pomares, Héctor; Rojas, Ignacio; Bustince Sola, Humberto Upna Orcid (IEEE, 2016)   Artículo / Artikulua  OpenAccess
      In this paper we will present two theorems for the join and meet operations for general type-2 fuzzy sets with arbitrary secondary memberships, which can be non-convex and/or non-normal type-1 fuzzy sets. These results ...
    • Linking mathematical morphology and L-fuzzy concepts 

      Alcalde, Cristina; Burusco Juandeaburre, Ana Upna Orcid; Bustince Sola, Humberto Upna Orcid; Fuentes González, Ramón Upna Orcid; Sesma Sara, Mikel Upna Orcid (World Scientific, 2017)   Artículo / Artikulua  OpenAccess
      In this paper we study the relation between L-fuzzy morphology and L-fuzzy concepts over complete lattices. In particular, we show how the erosion and dilation operators of the former can be understood in terms of the ...
    • Medical diagnosis of cardiovascular diseases using an interval-valued fuzzy rule-based classification system 

      Sanz Delgado, José Antonio Upna Orcid; Galar Idoate, Mikel Upna Orcid; Jurío Munárriz, Aránzazu Upna Orcid; Brugos Larumbe, Antonio Upna Orcid; Pagola Barrio, Miguel Upna Orcid; Bustince Sola, Humberto Upna Orcid (Elsevier, 2013)   Artículo / Artikulua  OpenAccess
      Objective: To develop a classifier that tackles the problem of determining the risk of a patient of suffering from a cardiovascular disease within the next ten years. The system has to provide both a diagnosis and an ...
    • A method for inference in approximate reasoning based on normal intuitionistic fuzzy sets 

      Bustince Sola, Humberto Upna Orcid; Burillo López, Pedro Upna; Mohedano Salillas, Victoria Upna (Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1995)   Artículo / Artikulua  OpenAccess
      This paper introduces a method of approximate inference which operates with nornal intuitionistic fuzzy. We give a definition of degree of compatibility between intuitionistic fuzzy sets and we present a method for the ...
    • Multivalued contexts associated with criteria 

      Alcalde, Cristina; Burusco Juandeaburre, Ana Upna Orcid (Taylor & Francis, 2018)   Artículo / Artikulua  OpenAccess
      We are interested in the study of L-fuzzy contexts taking into account different criteria. These contexts arise when we want to analyze the relationship between objects and attributes from different points of view. ...
    • New measures for comparing matrices and their application to image processing 

      Sesma Sara, Mikel Upna Orcid; Miguel Turullols, Laura de Upna Orcid; Pagola Barrio, Miguel Upna Orcid; Burusco Juandeaburre, Ana Upna Orcid; Mesiar, Radko; Bustince Sola, Humberto Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      In this work we present the class of matrix resemblance functions, i.e., functions that measure the difference between two matrices. We present two construction methods and study the properties that matrix resemblance ...
    • New trends on the numerical representability of semiordered structures 

      Abrísqueta Usaola, Francisco Javier Upna; Campión Arrastia, María Jesús Upna Orcid; García Catalán, Olga Raquel Upna; Miguel Velasco, Juan Ramón de Upna Orcid; Estevan Muguerza, Asier Upna Orcid; Induráin Eraso, Esteban Upna Orcid; Zudaire Sarobe, Margarita Upna; Agud, L.; Candeal, Juan Carlos; Díaz, S.; Martinetti, D.; Montes Rodríguez, Susana; Gutiérrez García, J. (EUSFLAT, 2012)   Artículo / Artikulua  OpenAccess
      We introduce a survey, including the historical background, on di erent techniques that have recently been issued in the search for a characterization of the representability of semiordered structures, in the sense of ...
    • On capacity planning for the GMPLS network control plane 

      Morató Osés, Daniel Upna Orcid; Aracil Rico, Javier Upna; Fernández Palacios, Juan P.; González de Dios, Óscar; Lobo Poyo, Jesús F. (Springer US, 2008)   Artículo / Artikulua  OpenAccess
      This paper presents capacity planning rules for the control plane of all-optical networks featuring GMPLS and RSVP-TE as a connection setup protocol. As per RSVP standard, a refresh message mechanism is incorporated to ...
    • On completeness and direction in fuzzy relational systems 

      Burillo López, Pedro Upna; Fuentes González, Ramón Upna Orcid; González, L. (Universitat Politècnica de Catalunya, 1998)   Artículo / Artikulua  OpenAccess
      The concepts of bounded subset, complete subset and directed subset, which are well known in the context of partially ordered sets (X, ≤), are extended in order to become applicable, with coherence, in fuzzy relational ...

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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