Granule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures

Social robots keep proliferating. A critical challenge remains their sensible interaction with humans, especially in real world applications. Hence, computing with real world semantics is instrumental. Recently, the Lattice Computing (LC) paradigm has been proposed with a capacity to compute with se...

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Autores principales: Vassilis G. Kaburlasos, Chris Lytridis, Eleni Vrochidou, Christos Bazinas, George A. Papakostas, Anna Lekova, Omar Bouattane, Mohamed Youssfi, Takashi Hashimoto
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/5ad0c4cea3e64891aaa57eaf870d799f
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spelling oai:doaj.org-article:5ad0c4cea3e64891aaa57eaf870d799f2021-11-25T18:16:53ZGranule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures10.3390/math92228892227-7390https://doaj.org/article/5ad0c4cea3e64891aaa57eaf870d799f2021-11-01T00:00:00Zhttps://www.mdpi.com/2227-7390/9/22/2889https://doaj.org/toc/2227-7390Social robots keep proliferating. A critical challenge remains their sensible interaction with humans, especially in real world applications. Hence, computing with real world semantics is instrumental. Recently, the Lattice Computing (LC) paradigm has been proposed with a capacity to compute with semantics represented by partial order in a mathematical lattice data domain. In the aforementioned context, this work proposes a parametric LC classifier, namely a Granule-based-Classifier (GbC), applicable in a mathematical lattice (T,⊑) of tree data structures, each of which represents a human face. A tree data structure here emerges from 68 facial landmarks (points) computed in a data preprocessing step by the OpenFace software. The proposed (tree) representation retains human anonymity during data processing. Extensive computational experiments regarding three different pattern recognition problems, namely (1) head orientation, (2) facial expressions, and (3) human face recognition, demonstrate GbC capacities, including good classification results, and a common human face representation in different pattern recognition problems, as well as data induced granular rules in (T,⊑) that allow for (a) explainable decision-making, (b) tunable generalization enabled also by formal logic/reasoning techniques, and (c) an inherent capacity for modular data fusion extensions. The potential of the proposed techniques is discussed.Vassilis G. KaburlasosChris LytridisEleni VrochidouChristos BazinasGeorge A. PapakostasAnna LekovaOmar BouattaneMohamed YoussfiTakashi HashimotoMDPI AGarticleGranular Computinghuman-robot interactionmachine learningtree data structuresMathematicsQA1-939ENMathematics, Vol 9, Iss 2889, p 2889 (2021)
institution DOAJ
collection DOAJ
language EN
topic Granular Computing
human-robot interaction
machine learning
tree data structures
Mathematics
QA1-939
spellingShingle Granular Computing
human-robot interaction
machine learning
tree data structures
Mathematics
QA1-939
Vassilis G. Kaburlasos
Chris Lytridis
Eleni Vrochidou
Christos Bazinas
George A. Papakostas
Anna Lekova
Omar Bouattane
Mohamed Youssfi
Takashi Hashimoto
Granule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures
description Social robots keep proliferating. A critical challenge remains their sensible interaction with humans, especially in real world applications. Hence, computing with real world semantics is instrumental. Recently, the Lattice Computing (LC) paradigm has been proposed with a capacity to compute with semantics represented by partial order in a mathematical lattice data domain. In the aforementioned context, this work proposes a parametric LC classifier, namely a Granule-based-Classifier (GbC), applicable in a mathematical lattice (T,⊑) of tree data structures, each of which represents a human face. A tree data structure here emerges from 68 facial landmarks (points) computed in a data preprocessing step by the OpenFace software. The proposed (tree) representation retains human anonymity during data processing. Extensive computational experiments regarding three different pattern recognition problems, namely (1) head orientation, (2) facial expressions, and (3) human face recognition, demonstrate GbC capacities, including good classification results, and a common human face representation in different pattern recognition problems, as well as data induced granular rules in (T,⊑) that allow for (a) explainable decision-making, (b) tunable generalization enabled also by formal logic/reasoning techniques, and (c) an inherent capacity for modular data fusion extensions. The potential of the proposed techniques is discussed.
format article
author Vassilis G. Kaburlasos
Chris Lytridis
Eleni Vrochidou
Christos Bazinas
George A. Papakostas
Anna Lekova
Omar Bouattane
Mohamed Youssfi
Takashi Hashimoto
author_facet Vassilis G. Kaburlasos
Chris Lytridis
Eleni Vrochidou
Christos Bazinas
George A. Papakostas
Anna Lekova
Omar Bouattane
Mohamed Youssfi
Takashi Hashimoto
author_sort Vassilis G. Kaburlasos
title Granule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures
title_short Granule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures
title_full Granule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures
title_fullStr Granule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures
title_full_unstemmed Granule-Based-Classifier (GbC): A Lattice Computing Scheme Applied on Tree Data Structures
title_sort granule-based-classifier (gbc): a lattice computing scheme applied on tree data structures
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/5ad0c4cea3e64891aaa57eaf870d799f
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