Rafael Bello 0001

dblp:38/5311 · also Rafael Bello Pérez, Rafael Esteban Bello Pérez · DBLP profile ↗
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7ranked-venue papers in the field
2as first author
3since 2021 · last 2025
0000-0001-5567-2638ORCID · verified

Domains — venue-derived; a paper can count in several

Knowledge Engineering, Semantic Web & Information Systems · 4 (1 first)Other / Interdisciplinary · 2 (1 first)Data Mining & Knowledge Discovery · 1
YearPublicationVenuePosition
2025 Meta-Explainers: A Unified Ensemble Approach for Multifaceted XAI
abstract
Artificial intelligence (AI) systems are increasingly adopted in high‐stakes domains such as healthcare and finance, so the demand for transparency and interpretability has grown substantially. EXplainable AI (XAI) methods have emerged to address this challenge, but individual techniques often offer limited, fragmented insights. This paper introduces Meta‐explainers, a novel ensemble‐based XAI framework that integrates multiple explanation types—specifically relevance‐based and counterfactual methods—into unified, multifaceted and complementary meta‐explanations. Inspired by meta‐classification principles, our approach structures the explanation process into five stages: generation, grouping, evaluation, aggregation, and visualization. Each stage is designed to preserve the unique strengths of individual XAI techniques while enhancing their interpretability and coherence when combined. Experimental results on both image (MNIST) and tabular (Breast Cancer) datasets show that Meta‐explainers consistently outperform individual and state‐of‐the‐art ensemble explanation methods in terms of explanation quality, as measured by established metrics. This work paves the way toward more holistic and user‐centered AI explainability with a flexible methodology that can be extended to incorporate additional explanation paradigms.
Marilyn Bello-García, Rosalís Amador, María-Matilde García, Rafael Bello 0001, Oscar Cordón, Francisco Herrera
Int. J. Intell. Syst.4
2024 REPROT: Explaining the predictions of complex deep learning architectures for object detection through reducts of an image
abstract
Although deep learning models can solve complex prediction problems, they have been criticized for being ‘black boxes’. This implies that their decisions are difficult, if not impossible, to explain by simply inspecting their internal knowledge structures. Explainable Artificial Intelligence has attempted to open the black-box through model-specific and agnostic post-hoc methods that generate visualizations or derive associations between the problem features and the model predictions. This paper proposes a new method, termed REPROT, that explains the decisions of complex deep learning architectures based on local reducts of an image. A ‘reduct’ is a set of sufficiently descriptive features that can fully characterize the acquired knowledge. The created reducts are used to build a ‘prototype image’ that visually explains the inference obtained by a black-box model for an image. We focus on deep learning architectures whose complexity and internal particularities demand adapting existing model-specific explanation methods, making the explanation process more difficult. Experimental results show that the black-box model can detect an object using the prototype image generated from the reduct. Hence, the explanations will be given by “the minimum set of features sufficient for the neural model to detect an object”. The confidence scores obtained by architectures such as Inception, Yolo, and Mask R-CNN are higher for prototype images built from the reduct than those built from the most important superpixels according to the LIME method. Moreover, the target object is not detected on several occasions through the LIME output, thus supporting the superiority of the proposed explanation method.
Marilyn Bello-García, Gonzalo Nápoles, Leonardo Concepción, Rafael Bello 0001, Pablo Mesejo, Oscar Cordón
Inf. Sci.4
2021 Data quality measures based on granular computing for multi-label classification
Marilyn Bello-García, Gonzalo Nápoles, Koen Vanhoof, Rafael Bello 0001
Inf. Sci.4
2016 On the convergence of sigmoid Fuzzy Cognitive Maps
Gonzalo Nápoles, Elpiniki I. Papageorgiou, Rafael Bello 0001, Koen Vanhoof
Inf. Sci.3
2014 Knowledge Engineering for Rough Sets Based Decision-Making Models
abstract
In this paper, a review of decision-making models based on the rough set theory is presented. The use of these techniques allows for the presence of uncertainty in computer models that are developed for decision making, and to formulate the decision-making models using the experiences of previous decisions made. Since the formulation of these models differs from the classical approach of decision-making models, in this paper, the models are analyzed and a method is proposed for its implementation.
Rafael Bello 0001, José L. Verdegay
Int. J. Intell. Syst.1
2012 Rough sets in the Soft Computing environment
Rafael Bello 0001, José L. Verdegay
Inf. Sci.1
2012 SMOTE-RSB *: a hybrid preprocessing approach based on oversampling and undersampling for high imbalanced data-sets using SMOTE and rough sets theory
Enislay Ramentol, Yailé Caballero Mota, Rafael Bello 0001, Francisco Herrera
Knowl. Inf. Syst.3