, Héctor Quintián Bringas (ed. lit.), Emilio Santiago Corchado Rodríguez (ed. lit.) 
This book of Advances in Intelligent and Soft Computing contains accepted papers presented at SOCO 2021 conference held in the beautiful and historic city of Bilbao (Spain), in September 2021.
Soft computing represents a collection or set of computational techniques in machine learning, computer science, and some engineering disciplines, which investigate, simulate, and analyze very complex issues and phenomena.
After a through peer-review process, the 16th SOCO 2021 International Program Committee selected 78 papers which are published in these conference proceedings and represents an acceptance rate of 48%. In this relevant edition, a special emphasis is put on the organization of special sessions. Seven special sessions are organized related to relevant topics as follows: applications of machine learning in computer vision; soft computing applied to autonomous robots and renewable energy systems; optimization, modeling, and control by soft computing techniques (OMCS); challenges and new approaches toward artificial intelligence deployments in real-world scenarios; time series forecasting in industrial and environmental applications (TSF); soft computing methods in manufacturing and management systems and applied machine learning.
The selection of papers was extremely rigorous in order to maintain the high quality of the conference, and we would like to thank the members of the program committees for their hard work in the reviewing process. This is a crucial process to the creation of a high standard conference, and the SOCO conference would not exist without their help.
A Comparison of Techniques for Virtual Concept Drift Detection
Manuel L. González, Javier Sedano Franco
, Ángel Miguel García Vico, José Ramón Villar Flecha 
págs. 3-13
Dimensional Reduction on an Intelligent Model for Efficiency Improvement of Switching Modes Detection
Luis Alfonso Fernández Serantes, José-Luis Casteleiro-Roca
, Hubert Berger, Dragan Simić
, José Luis Calvo Rolle 
págs. 14-23
Performance and explainability of reservoir computing models for industrial prognosis
Unai Armentia, Irantzu Barrio Beraza
, Javier del Ser Lorente 
págs. 24-36
A Data-Driven Approach for Components Useful Life Estimation in Wind Turbines
Alejandro Zornoza Martínez, Jesús Martínez Gómez
, José Antonio Gámez Martín 
págs. 37-47
Towards Adaptive Gamification in Small Online Communities
Víctor Sánchez Anguix
, Juan M. Alberola
, Vicente J. Julián Inglada 
págs. 48-57
LSTM vs CNN in Real Ship Trajectory Classification
Juan Pedro Llerena, Jesús García Herrero
, José Manuel Molina López 
págs. 58-67
A Comparison of Learning Approaches to Dialogue Management in Conversational Systems
David Griol Barres
, Zoraida Callejas Carrión 
págs. 68-77
Aspect-Based Sentiment Analysis in Drug Reviews Based on Hybrid Feature Learning
Asmaa Hashem Sweidan, Nashwa El Bendary, Haytham Al Feel
págs. 78-87
Low-Cost Deep Learning-Based Prototype for Automatic Identification of Traffic Signs in Vehicles
Enol García González
, José Ramón Villar Flecha
, Enrique Antonio de la Cal Marín 
págs. 91-100
Visual Mining of Industrial Gas Turbines Sensor Data as an Industry 4.0 Application
Angel X. Astudillo Aguilar, Stefano Rosso, Karina Gibert Oliveras
, Alfredo Vellido Alacena 
págs. 101-111
Visually Monitoring the Performance of a Component-Based Robot
Nuño Basurto Hornillos, Carlos Cambra Baseca
, Álvaro Herrero Cosío 
págs. 112-121
Optimizing Communication Data Streams in Edge Computing Systems Using Bayesian Algorithms
Nerea Gómez Larrakoetxea, Borja Sanz Urquijo
, Iker Pastor López
, Jon García Barruetabeña
, Pablo García Bringas 
págs. 122-131
Fernando Sánchez Lasheras
, Paulino José García Nieto
, María Esperanza García Gonzalo, Gregorio Fidalgo Valverde, Alicja Krzemień 
págs. 135-144
María Esperanza García Gonzalo, Paulino José García Nieto
, Gregorio Fidalgo Valverde, Pedro Riesgo Fernández
, Fernando Sánchez Lasheras 
págs. 145-154
Data Mines in Real Estate Web Pages: Investigation of Changes in the Czech Real Estate Market Based on Elasticity and on Modified Price Volume Indicator
Alena Pozdílková, Jaroslav Marek
págs. 155-164
The Weak Supervision Approach for Question Answering over Text Using Triplets Recovering with QA-Based Rankers
Dmitriy Alexandrov, Nikolay Butakov, Timur Sokhin
págs. 167-177
VR-Photosense: A Virtual Reality Photic Stimulation Interface for the Study of Photosensitivity
Sofía Martín, Víctor Manuel Álvarez García, Beatriz García López, Víctor M. González, José Ramón Villar Flecha 
págs. 178-186
Guidance of Unmanned Surface Vehicle Fleet Using Genetic Algorithm-Based Approach
Miroslav Dvorak, Petr Doležel, Dominik Štursa, Mohamed Chouai
págs. 187-197
Toward Reusing the Numerical Association Rule Mining Models
Iztok Fister, Andrés Iglesias, Akemi Gálvez Tomida
, Iztok Fister 
págs. 198-206
págs. 207-221
Akemi Gálvez Tomida
, Iztok Fister
, Iztok Fister, Andrés Iglesias
págs. 222-232
Intraday Energy Resource Scheduling for Load Aggregators Considering Local Market
Jos Almeida, João Soares, Bruno Miguel da Rocha Canizes, Ivn Razo Zapata, Zita Vale 
págs. 233-242
págs. 243-250
Texture Descriptors for Automatic Classification of Surface Defects of the Hot-Rolled Steel Strip
Virginia Riego del Castillo, Lidia Sánchez González
, Alexis Gutiérrez Fernández
págs. 251-260
PhrasIS: Phrase Inference and Similarity Benchmark
Íñigo López Gazpio, José Gaviria de la Puerta, Pablo García Bringas
, Hugo Sanjurjo González, Borja Sanz Urquijo
, Montse Maritxalar Anglada
, Eneko Agirre Bengoa 
págs. 261-272
A Scalable and Flexible Open Source Big Data Architecture for Small and Medium-Sized Enterprises
págs. 273-282
Codebook-Based Near-Duplicate Video Detection
Guillermo Hernández González, María Angélica González Arrieta
, Paulo Novais
, Sara Rodríguez González 
págs. 283-293
Daniel Amigo, David Sánchez, Jesús García Herrero
, José Manuel Molina López 
págs. 294-303
A First Prototype of an Emotional Smart Speaker
Enrique Antonio de la Cal Marín
, Alberto Gallucci, José Ramón Villar Flecha
, Kaori Yoshida, Mario Koeppen
págs. 304-313
A New Information Infrastructure Approach for End-To-End Supply Chain Management
Dragan Simić
, José Luis Calvo Rolle
, José Ramón Villar Flecha
, Vladimir Ilin, Svetislav D. Simić, Svetlana Simić
págs. 314-323
Hierarchical Color Quantization with a Neural Gas Model Based on Bregman Divergences
Esteban José Palomo Ferrer
, Jesús Benito Picazo, Enrique Domínguez Merino
, Ezequiel López Rubio
, Francisco Ortega Zamorano
págs. 327-337
Autoencoder and Modified YOLOv3 Based Firearms Object Detection in X-ray Baggage Images to Enhance Aviation Safety
Mohamed Chouai, Mostefa Merah, José Luis Sancho Gómez
, Petr Doležel
págs. 338-347
Predicting Landslides with Machine Learning Methods Using Temporal Sequences of Meteorological Data
Byron Guerrero Rodríguez, Jaime Salvador Meneses
, José García Rodríguez 
págs. 348-357
Webpage Categorization Using Deep Learning
Christian Iván Mejía Escobar, Miguel Cazorla Quevedo
, Ester Martínez Martín 
págs. 358-368
Luis Lucas Ibáñez, David Tomás Díaz
, José García Rodríguez 
págs. 369-378
Improving Landslides Prediction: Meteorological Data Preprocessing Using Random Forest-Based Feature Selection
Byron Guerrero Rodríguez, Jaime Salvador Meneses
, José García Rodríguez 
págs. 379-387
Jorge García González, Juan Miguel Ortiz de Lazcano Lobato
, Rafael Marcos Luque Baena, Ezequiel López Rubio 
págs. 388-397
Predicting Human Actions in the Assembly Process for Industry 4.0
Mauricio Andrés Zamora Hernández
, Jose Andrez Chaves Ceciliano, Alonso Villalobos Granados, José García Rodríguez
, Jorge Azorín López 
págs. 398-407
Medical Catheters Grasping Point Detection with Quality Control
Dominik Štursa, Petr Doležel, Bruno Zanon
págs. 408-418
Sentiment Analysis and Image Classification in Social Networks with Zero-Shot Deep Learning: Applications in Tourism
Luis Lucas Ibáñez, David Tomás Díaz
, José García Rodríguez 
págs. 419-428
Iván San Martín Fernández, Sergiu Oprea, John Alejandro Castro Vargas, Pablo Martínez González, José García Rodríguez 
págs. 429-438
Interaction Estimation in Egocentric Videos via Simultaneous Hand-Object Recognition
Manuel Benavent Lledó, Sergiu Oprea, John Alejandro Castro Vargas, Pablo Martínez González, José García Rodríguez 
págs. 439-448
Evolutive Tuning Optimization of a PID Controller for Autonomous Path-Following Robot
Mikel Rico Abajo, Jesús Enrique Sierra García
, Matilde Santos Peñas 
págs. 451-460
Intelligent Hybrid Controllers for the Blade Angle of Floating Wind Turbines
Carlos L. Serrano Barreto, Jesús Enrique Sierra García
, Matilde Santos Peñas 
págs. 461-470
Generation of Restricted Zones for AGVs Routes by Clustering Algorithms
Marcos Millán, Jesús Enrique Sierra García
, Matilde Santos Peñas 
págs. 471-479
Iterative Obstacle Avoidance Algorithm for Mobile Robots
Jesús Enrique Sierra García
, Marcos Millán, Matilde Santos Peñas 
págs. 480-488
Descent of a Suborbital Rocket: A Simulation Case Study Using CFD, Parametric Models and Neural Networks
Pablo Díez Arrizabalaga, César Ernesto Hernández Hernández, Matilde Santos Peñas 
págs. 491-501
Critical Node Detection for Maximization of Connected Components: An Extremal Optimization Approach
Noémi Gaskó, Tamás Képes, Mihai-Alexandru Suciu, Rodica Ioana Lung
págs. 502-511
Optimal Node Distribution in Wireless Sensor Networks Considering Sensor Selection
Javier Díez González
, Rubén Álvarez Fernández, Paula Verde García, Rubén Ferrero Guillén, Alberto Martínez Gutiérrez, Hilde Pérez García 
págs. 512-522
Machine learning based soft sensing tool for the prediction of leaf wetness duration in precision agriculture
Maria Arostegi, Diana Manjarrés Martínez
, Sonia Bilbao Arechavala, Javier del Ser Lorente 
págs. 525-535
Temperature-Effect Compensation for Leak Detectors by Using Machine Learning Techniques
Juan Luis Ferrando, Ander García Gangoiti, Xabier Oregui Biain, Andoni Bilbao, Eneko Fernandez, Zelmar Etxegoien
págs. 536-545
An Online Feature Selection Methodology for Ball-Bearing Harmonic Frequencies Based on HMMs
Carlos Puerto Santana, Pedro Larrañaga Múgica
, Javier Diaz Rozo, Concha Bielza Lozoya 
págs. 546-555
Telmo Fernández de Barrena, Juan Luis Ferrando, Ander García Gangoiti, Pedro José Arrazola Arriola
, José Manuel Abete Huici
, Diego Herrero
págs. 556-566
Non-intrusive Load Monitoring Based on Event Detection and Unsupervised Learning for Airport Baggage Handling Systems
Miguel Angel Bermeo Ayerbe, David Antonio Cruz Rangel, Javier Diaz Rozo, C. Ocampo-Martínez 
págs. 567-577
Mutagenic Prediction for Chemical Compound Discovery with Partitioned Graph Convolution Network
Hyung Jun Moon, Seok Jun Bu, Sung Bae Cho
págs. 578-587
Multivariate Adaptive Downsampling Algorithm for Industry 4.0 Data Visualization
Javier Franco, Ander García Gangoiti, Amaia Gil Lerchundi
págs. 588-597
Anomaly Detection for Health Monitoring of Heavy Equipment Using Hierarchical Prediction with Correlative Feature Learning
Gye bong Jang, Sung Bae Cho
págs. 598-608
Discrete-Event-Simulation Based on Machine Learning Predictive Agents
Javier Andión Jiménez, Juan Carlos Dueñas López
, Félix Aurelio Cuadrado Latasa 
págs. 609-619
Enhancing Short-Term Velocity Forecasting Models by Using ML Models and Traffic Patterns Information
Cristián Lira, Bastián Véjar, Fernando Ordóñez, Sebastián A. Ríos
págs. 620-629
Automated Data-Driven Approach for Gap Filling in the Time Series Using Evolutionary Learning
Mikhail Sarafanov, Nikolay O. Nikitin, Anna V. Kalyuzhnaya
págs. 633-642
Forecasting a Fashion Collection with the Optimization of Costs of Overestimation and Underestimation of Demand
Mariusz Czekała, Jacek Jagodziński, Jakub Przybylski, Dawid Zaraza, Karol Ziółkowski
págs. 643-653
Feature Selection on Spatio-Temporal Data for Solar Irradiance Forecasting
Manuel Carranza García, Pedro Lara Benítez
, Jose María Luna Romera
, José Cristobal Riquelme Santos 
págs. 654-664
A. Melara, José Francisco Torres Maldonado, Alicia Troncoso Lara
, Francisco Martínez Álvarez 
págs. 665-674
Belén Vega Márquez
, Javier Solís García, Isabel de los Ángeles Nepomuceno Chamorro
, Cristina Rubio Escudero 
págs. 675-684
Forecasting Electricity Consumption Data from Paraguay Using a Machine Learning Approach
José A. Gallardo, Miguel García Torres, Francisco Gómez Vela, Félix Morales, Federico Divina
, David Becerra Alonso
, Gustavo Velázquez, Federico Daumas Ladouce, José Luis Vázquez Noguera
, Carlos Sauer Ayala, Diego P. Pinto Roa, Pedro Esteban Gardel Sotomayor, Julio César Mello Román
págs. 685-694
Hybrid Orbit Propagator Based on Neural Networks. Multivariate Time Series Forecasting Approach
Hans Mauricio Carrillo Hernández, Edna Segura, Rosario López Gómez
, Iván Luis Pérez Barrón
, Juan Félix San Juan Díaz 
págs. 695-705
Study Case of Household Electricity Consumption Patterns in London by Clustering Methodology
Jose María Luna Romera
, Manuel Carranza García, David Gutiérrez Avilés, José Cristobal Riquelme Santos 
págs. 706-716
HLNet: A Novel Hierarchical Deep Neural Network for Time Series Forecasting
Manuel Jesús Jiménez Navarro, Francisco Martínez Álvarez
, Alicia Troncoso Lara
, Gualberto Asencio Cortés 
págs. 717-727
Earthquake Prediction in California Using Feature Selection Techniques
Joaquin Roiz Pagador, Andrés Manuel Chacón Maldonado, Roberto Ruiz
, Gualberto Asencio Cortés 
págs. 728-738
Dalil Hadjout, José Francisco Torres Maldonado, Abderrazak Sebaa
, Francisco Martínez Álvarez 
págs. 739-748
Efficient Tabu Search Algorithm for the Cyclic Inspection Problem
Wojciech Bożejko, Radosław Grymin, Jarosław Pempera, Mieczysław Wodecki
págs. 751-757
Parallel Block-Based Simulated Annealing for the Single Machine Total Weighted Tardiness Scheduling Problem
Wojciech Bożejko, Jarosław Pempera, Mariusz Uchroński, Mieczysław Wodecki
págs. 758-765
The Improvement of Machining Process Scheduling with the Use of Heuristic Algorithms
Anna Burduk, Łukasz Łampika, Dagmara Łapczyńska, Kamil Musiał
págs. 766-776
Sequencing for Improving Mixed-Model Assembly Line Supply Using Heuristic Algorithms
Karol Dziki, Damian Krenczyk
págs. 777-788
Job Shop Scheduling with Transport by Automated Guided Vehicles
Czeslaw Smutnicki, Jarosław Pempera
págs. 789-799
Supervised Machine Learning Techniques in the Bitcoin Transactions: A Case of Ransomware Classification
José A. Blanco, Antonio Javier Tallón Ballesteros
págs. 803-810
Analysis of the Tourism Industry in Ecuador by Means of Soft Computing Techniques
Anita Krupskaia Herrera Vaca, Ángel Arroyo Puente
, Alfredo Jiménez Palmero
, Álvaro Herrero Cosío 
págs. 811-820
Attribute Subset Selection for Image Recognition. Random Forest Under Assessment
Antonio Javier Tallón Ballesteros, Luís Correia, Rocío Leal Díaz
págs. 821-827
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