Artificial Intelligence, Data Mining and Applications -- Layer-Wise Relevance Propagation in Multi-label Neural Networks to Identify COVID-19 Associated Coinfections -- A Machine Learning Based Approach for Estimation of the Lung Affectation Degree in CXR images of COVID-19 patients -- Deep Neural Network to detect gender violence on Mexican tweets -- Consumer Price Index forecasting based on univariate time series and a deep neural network -- Application of a Generalized Regression Neural Network to the estimation of average gait speed.-Gait speed estimation based on artificial neural network: Comparison with the application of the inverted pendulum model -- Scalable Generalized Multitarget Linear Regression with Output Dependence Estimation -- Covariance Matrix Adaptation Evolution Strategy for Convolutional Neural Network in text classification -- A novel approach for detection and location of cyber-attacks in water distributions networks -- Identification of non-linear chemical systems with neural networks -- Convolutional neural networks as support tools for spinocerebellar ataxia detection from magnetic resonances -- A Hybrid Brain-Computer Interface using Extreme Learning Machines for Motor Intention Detection -- Peripheral nerve segmentation in ultrasoundimages using conditioned U-Net -- Assessing the relationship between binarization and OCR in the context of deep learning-based ID document analysis -- Pattern Recognition and Applications -- Pattern Recognitions Strategies to Classify Traced Neurons -- Evaluation of Hepatic Fibrosis Stages Using the Logical Combinatorial Approach -- A proposal of condition monitoring with missing data and small-magnitude faults in industrial plants -- A proposal of metric for improving remaining useful life prediction in industrial systems -- A fuzzy logic proposal for diagnosis multiple incipient faults in a power transformer -- A robust fault diagnosis strategy in mechanical systems using pythagorean fuzzy sets -- Prediction of Diabetes Mortality in Mexico City applying Data Science -- Balancing of Samples in Class Hierarchy -- Feature Selection with Class Hierarchy for Imbalance Problems -- SVM based EVM for Open Space Problems.-Data drive fuzzy cognitive map for classification problems -- Extracting composite summaries from qualitative data -- A novel initial population construction heuristic for the DINOS subgroup discovery algorithm -- A Survey on the Methods to Determine the Sensitivity of Textual Documents: Solutions and Problems to Solve -- Automatic Classification of Diabetic Foot Ulcers using Computer Vision Techniques -- Biometrics, Image, and Video Analysis -- Image segmentation applied to line separation and determination of GPN2 protein overexpression for its detection in polyacrylamide gels -- Underwater Image Enhancement using Adaptive Algorithms -- Improving the robustness of DCT-based handwritten document image watermarking against JPEG-compression -- Automated System for the Detection of Lung Nodules -- Video and image complexity in Human Action Recognition -- A WIDE 2D MEDIAN FILTER FOR GPU DEVICES -- Medical Image Watermarking with Separable Moments -- Signals Analysis and Processing -- Intra-day population fluxes from mobile phone data in Havana, Cuba -- Semantic Segmentation of Radio-astronomical Images -- Content-based Image Retrieval For Surface Defects Of Hot Rolled Steel Strip Using Wavelet-Based LBP -- Decision rules for radar detection in the moments space with arbitrary correlation degree and constant false alarm rate -- Interpretable diagnosis of ADHD based on wavelet features and logistic regression -- Evaluation of GOI Detectors in EGG Signals Assuming Dfferent Models for the Pulse Length Variability.-.

This book constitutes the refereed proceedings of the 7th International Workshop on Artificial Intelligence and Pattern Recognition, IWAIPR 2021, held in Havana, Cuba, in October 2021. The 42 full papers presented were carefully reviewed and selected from 73 submissions. The papers promote and disseminate ongoing research on mathematical methods and computing techniques for artificial intelligence and pattern recognition, in particular in bioinformatics, cognitive and humanoid vision, computer vision, image analysis and intelligent data analysis.