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Autor Gómez, Daniel |
Documentos disponibles escritos por este autor (43)
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Supervised classification in remote sensing is a very complex problem and involves steps of different nature, including a serious data preprocessing. The final objective can be stated in terms of a classification of isolated pixels between class[...]![]()
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In this paper we extend the notion of stability of each aggregation function as presented in a previous paper of the authors, where an aggregation function was denominated Family of Aggregation Operators (FAO) in order to stress that aggregation[...]![]()
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Segmentation algorithms are well known in the field of image processing. In this work we propose an efficient and polynomial algorithm for image segmentation based on fuzzy set theory. The main difference with the classical segmentation algorith[...]![]()
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In this chapter we consider remotely sensed images, where land surface should be classified depending on their uses. On one hand, we discuss the advantages of the fuzzy classification model proposed by Amo et al. (European Journal of Operational[...]![]()
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Castro, Javier ; Gómez, Daniel ; Molina, Elienda ; Tejada Cazorla, Juan Antonio | Pergamon-Elsevier | 2017In this paper, we propose a refinement of the polynomial method based on sampling theory proposed by Castro et al. (2009) to estimate the Shapley value for cooperative games. In addition to analyzing the variance of the previously proposed estim[...]![]()
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Gómez, Daniel ; Montero, Javier ; Yáñez, Javier | European Society for Fuzzy Logic and Technology | 2006Measuring criteria weights in multicriteria decision making is a key issue in order to amalgamate information when reality is being described from several different points of view. In this paper we propose a method for evaluating those weights t[...]![]()
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En esta comunicacion, se consideran imágenes tomadas mediante teledeteccion, y se propone un modelo de clasificación no supervisado para obtener una clasificación difusa. Nuestro procedimiento busca en primer lugar regiones homogeneas,analizando[...]![]()
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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[...]![]()
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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[...]![]()
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Flores-Vidal, Pablo A. ; Olaso, Pablo ; Gómez, Daniel ; Guada, Carely | 2019-03Traditionally, the edge detection process requires one final step that is known as scaling. This is done to decide, pixel by pixel, if these will be selected as final edge or not. This can be considered as a local evaluation method that presents[...]![]()
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Flores Vidal, Pablo Arcadio ; Villarino, Guillermo ; Gómez, Daniel ; Montero, Javier | Atlantis Press | 2019Traditionally, the last step of edge detection algorithms, which is called scaling-evaluation, produces the final output classifying each pixel as edge or nonedge. This last step is usually done based on local evaluation methods. The local evalu[...]![]()
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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[...]![]()
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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[...]![]()
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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[...]![]()
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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[...]