Publications (140) NICOLÁS RUIZ REYES publications

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2026

  1. An orthogonal non-negative matrix factorization approach for respiratory rate estimation using a wireless stethoscope

    Computers and Electrical Engineering, Vol. 129

2025

  1. A novel data augmentation technique based on wheezing physiological modeling applied to asthma severity management in respiratory sounds

    Computers in Biology and Medicine, Vol. 196

  2. Expert system against machine learning approaches as a virtual sensor for ventricular arrhythmia risk level estimation

    Biomedical Signal Processing and Control, Vol. 102

  3. Fuzzy game-theoretic optimization for sustainable cloud computing

    Engineering Applications of Artificial Intelligence, Vol. 162, pp. 112725

2024

  1. Enhanced virtual machine migration for energy sustainability optimization in cloud computing through knowledge acquisition

    Computers and Electrical Engineering, Vol. 119, Núm. A, pp. 109506

  2. Expert system-based application for fatal ventricular arrhythmia risk level estimation based on QT-Interval prolongation

    Expert Systems with Applications, Vol. 255

  3. Game theory-based virtual machine migration for energy sustainability in cloud data centers

    Applied Energy, Vol. 372

  4. Improving snore detection under limited dataset through harmonic/percussive source separation and convolutional neural networks

    Applied Acoustics, Vol. 216

2023

  1. Detection of valvular heart diseases combining orthogonal non-negative matrix factorization and convolutional neural networks in PCG signals

    Journal of Biomedical Informatics, Vol. 145

2022

  1. Multichannel Blind Music Source Separation Using Directivity-Aware MNMF with Harmonicity Constraints

    IEEE Access, Vol. 10, pp. 17781-17795

  2. Unsupervised detection and classification of heartbeats using the dissimilarity matrix in PCG signals

    Computer Methods and Programs in Biomedicine, Vol. 221

2021

  1. An incremental algorithm based on multichannel non-negative matrix partial co-factorization for ambient denoising in auscultation

    Applied Acoustics, Vol. 182

  2. Interpretable Fuzzy Rule-Based System for Fatal Ventricular Arrhythmia Risk Level Estimation due to QT-Prolonging Treatments*

    Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics

  3. Monophonic and Polyphonic Wheezing Classification Based on Constrained Low-Rank Non-Negative Matrix Factorization

    Sensors (Basel, Switzerland), Vol. 21, Núm. 5

2020

  1. A constrained tonal semi-supervised non-negative matrix factorization to classify presence/absence of wheezing in respiratory sounds

    Applied Acoustics, Vol. 161

  2. Combining a recursive approach via non-negative matrix factorization and Gini index sparsity to improve reliable detection of wheezing sounds

    Expert Systems with Applications, Vol. 147

  3. Smart containers schedulers for microservices provision in cloud-fog-IoT networks. challenges and opportunities

    Sensors (Switzerland), Vol. 20, Núm. 6

2019

  1. A novel wheezing detection approach based on constrained non-negative matrix factorization

    Applied Acoustics, Vol. 148, pp. 276-288

  2. Detection and classification of internal defects in limestone blocks based on a deconvolution technique with SI-PLCA applied to GPR signals

    Research in Nondestructive Evaluation, Vol. 30, Núm. 6, pp. 350-379

  3. Monitoring the internal quality of ornamental stone using impact-echo testing

    Applied Acoustics, Vol. 155, pp. 180-189