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204 results on '"Madrid, Nicolás"'

1. A Critical Analysis of the Theoretical Framework of the Extreme Learning Machine

Author

Perfilievaa, Irina, Madrid, Nicolas, Ojeda-Aciego, Manuel, Artiemjew, Piotr, and Niemczynowicz, Agnieszka

Subjects
Computer Science - Machine Learning, Computer Science - Neural and Evolutionary Computing
Abstract

Despite the number of successful applications of the Extreme Learning Machine (ELM), we show that its underlying foundational principles do not have a rigorous mathematical justification. Specifically, we refute the proofs of two main statements, and we also create a dataset that provides a counterexample to the ELM learning algorithm and explain its design, which leads to many such counterexamples. Finally, we provide alternative statements of the foundations, which justify the efficiency of ELM in some theoretical cases.

Published
2024

2. Towards a Generalized Modus Ponens Based on the -Index of Inclusion

Author

Díaz-Montarroso, Carolina, Madrid, Nicolás, Ramírez-Poussa, Eloísa, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Cabrera, Inma P., editor, Ferré, Sébastien, editor, and Obiedkov, Sergei, editor

Published
2024
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3. A Logic to Reason About f-Indices of Inclusion over Ł

Author

Flaminio, Tommaso, Godo, Lluis, Madrid, Nicolás, Ojeda-Aciego, Manuel, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Massanet, Sebastia, editor, Montes, Susana, editor, Ruiz-Aguilera, Daniel, editor, and González-Hidalgo, Manuel, editor

Published
2023
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11. Representative Set of Objects in Rough Sets Based on Galois Connections

Author

Madrid, Nicolás, Ramírez-Poussa, Eloísa, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Bello, Rafael, editor, Miao, Duoqian, editor, Falcon, Rafael, editor, Nakata, Michinori, editor, Rosete, Alejandro, editor, and Ciucci, Davide, editor

Published
2020
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17. Rough sets based on Galois connections

Author

Madrid Nicolás, Medina Jesús, and Ramírez-Poussa Eloísa

Subjects
rough sets, galois connections, approximation operators, Mathematics, QA1-939, Electronic computers. Computer science, QA75.5-76.95
Abstract

Rough set theory is an important tool to extract knowledge from relational databases. The original definitions of approximation operators are based on an indiscernibility relation, which is an equivalence one. Lately, different papers have motivated the possibility of considering arbitrary relations. Nevertheless, when those are taken into account, the original definitions given by Pawlak may lose fundamental properties. This paper proposes a possible solution to the arising problems by presenting an alternative definition of approximation operators based on the closure and interior operators obtained from an isotone Galois connection. We prove that the proposed definition satisfies interesting properties and that it also improves object classification tasks.

Published
2020
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23. A View of f-indexes of Inclusion Under Different Axiomatic Definitions of Fuzzy Inclusion

Author

Madrid, Nicolás, Ojeda-Aciego, Manuel, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Moral, Serafín, editor, Pivert, Olivier, editor, Sánchez, Daniel, editor, and Marín, Nicolás, editor

Published
2017
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29. A measure of consistency for fuzzy logic theories.

Author

Madrid, Nicolás and Ojeda‐Aciego, Manuel

Subjects
*FUZZY measure theory, *INCONSISTENCY (Logic), *FUZZY systems, *MANY-valued logic
Abstract

Fuzzy logic has shown to be a suitable framework to handle contradictions in which, unsurprisingly, the notion of inconsistency can be defined in different ways. This paper starts with a short survey of different ways to define the notion of inconsistency in fuzzy logic systems. As a result, we provide a first notion of inconsistency by means of the absence of models. Subsequently, we define two measures of consistency that belong purely to the fuzzy paradigm; in the sense that both measures coincide with the crisp notion of consistency when the set of truth values is {0, 1}. Accordingly, we can state that the two provided measures of consistence are notions of consistence based on degrees, bringing back the spirit of fuzzy logic into the notion of consistency. [ABSTRACT FROM AUTHOR]

Published
2023
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31. Traducción y adaptación del “Quality of Life in the Dysarthric Speaker” (QOL-DYS) para su uso en usuarios chilenos con disartria

Author

MARTÍNEZ-CIFUENTES, RENATO, primary, PIERART-VÁSQUEZ, TAMARA, additional, CASTRO-MELLADO, JOSÉ IGNACIO, additional, LARA-SALAS, CAMILA, additional, FUENTES-PARRA, CRISTINA, additional, MARTÍNEZ-GONZÁLEZ, FRANCISCA, additional, MONTECINOS-MADRID, NICOLÁS, additional, and QUILODRÁN-ANABA, FRANCISCA, additional

Published
2022
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33. Upper Bounding Overlaps by Groupings

Author

Madrid, Nicolás, Barrenechea, Edurne, Bustince, Humberto, Fernadez, Javier, Perfilieva, Irina, Kacprzyk, Janusz, Series editor, Bustince, Humberto, editor, Fernandez, Javier, editor, Mesiar, Radko, editor, and Calvo, Tomasa, editor

Published
2013
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34. On Top-k Retrieval for a Family of Non-monotonic Ranking Functions

Author

Madrid, Nicolás, Straccia, Umberto, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Larsen, Henrik Legind, editor, Martin-Bautista, Maria J., editor, Vila, María Amparo, editor, Andreasen, Troels, editor, and Christiansen, Henning, editor

Published
2013
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35. On the Notions of Residuated-Based Coherence and Bilattice-Based Consistence

Author

Damásio, Carlos V., Madrid, Nicolás, Ojeda-Aciego, M., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Fanelli, Anna Maria, editor, Pedrycz, Witold, editor, and Petrosino, Alfredo, editor

Published
2011
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37. On Coherence and Consistence in Fuzzy Answer Set Semantics for Residuated Logic Programs

Author

Madrid, Nicolás, Ojeda-Aciego, Manuel, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Di Gesù, Vito, editor, Pal, Sankar Kumar, editor, and Petrosino, Alfredo, editor

Published
2009
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40. Rough sets based on Galois connections

Author

Madrid, Nicolás, Medina Moreno, Jesús, Ramírez Poussa, Eloísa, and Matemáticas

Subjects
approximation operators, Electronic computers. Computer science, QA1-939, Galois connections, rough sets, QA75.5-76.95, Mathematics, galois connections
Abstract

Rough set theory is an important tool to extract knowledge from relational databases. The original definitions of approximation operators are based on an indiscernibility relation, which is an equivalence one. Lately. different papers have motivated the possibility of considering arbitrary relations. Nevertheless, when those are taken into account, the original definitions given by Pawlak may lose fundamental properties. This paper proposes a possible solution to the arising problems by presenting an alternative definition of approximation operators based on the closure and interior operators obtained from an isotone Galois connection. We prove that the proposed definition satisfies interesting properties and that it also improves object classification tasks.

Published
2020

46. Definición de particiones difusas condicionadas usando transformadas difusas

Author

Madrid, Nicolás and Díaz Gómez, Sergio

Subjects
Matemáticas difusas, Conjuntos difusos, Transformadas difusas
Abstract

Las particiones difusas pueden definirse de diferentes formas, pero casi siempre, la definición se efectúa atendiendo a las características generales de la totalidad del universo. En este trabajo se presenta un método para definir particiones difusas condicionadas a la satisfacción de cierto atributo difuso. En concreto, se muestra cómo definir diferentes particiones difusas atendiendo a las características de diferentes subconjuntos difusos del universo.

Published
2019

47. Fostering the cooperative learning of mathematics in engineering schools through the 'Teacher-Apprentice' group dynamics

Author

Morales, Juan M., Olea, Benjamín, Atencia-Ruiz, Miguel Alejandro, and Madrid, Nicolás

Subjects
Aprendizaje cooperativo, University Teaching, Teaching methods, Cooperative learning, Enseñanza -- Métodos
Abstract

In this presentation, we report on the experience gained and the results obtained from an educational innovation project that has sought to introduce cooperative learning into the mathematics subjects of the first year of the Engineering degrees at the University of Malaga. In particular, we focus on the teamwork-based learning method that we have called the "Teacher-Apprentice" dynamics: Groups of 3-5 members are formed in which one of the members takes on the role of the Teacher, while the rest are the Apprentices. We introduce a system of incentives such that the group that progresses adequately in the subject has the right to group bonuses, which count towards the final grade awarded to each of the group members and which are different for the Teacher and for the Apprentices to allow for some level of competitiveness within the group. The selection of the Teacher is reviewed after each scheduled assessment test, where the student in the group who has obtained the highest score from among the group members will become the (possibly new) Teacher. The results collected to date reveal that group dynamics increase the motivation with which students face math learning, while helping them to correct conceptual errors through discussion with their peers. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. “I Plan Propio Integral de Docencia” de la Universidad de Málaga (PIE17-025)

Published
2019

48. F-transforms for the definition of contextual fuzzy partitions

Author

Madrid, Nicolás and Díaz Gómez, Sergio

Subjects
Fuzzy Partitions, Matemáticas difusas, Fuzzy, F-transforms
Abstract

Fuzzy partitions can be defined in many different ways, but usually, it is done taking into account the whole universe. In this paper, we present a method to define fuzzy partitions according to those elements in the universe holding certain fuzzy attribute. Specifically, we show how to define those fuzzy partitions by means of F-transforms. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech This work has been partially supported by the Spanish Ministry of Science by the projects TIN15-70266-C2-P-1 and TIN2016-76653-P

Published
2019

50. Toward the use of the contraposition law in multi-adjoint lattices

Author

Madrid, Nicolás and Matemática Aplicada

Subjects
Fuzzy logic, Lógica difusa, Contraposition rule
Abstract

A study of the contraposition rule in fuzzy logic by means of adjoint triples. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.

Published
2017

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