1. “AI System Engineering—Key Challenges and Lessons Learned”
by Lukas Fischer, Lisa Ehrlinger, Verena Geist, Rudolf Ramler, Florian Sobiezky, Werner Zellinger, David Brunner, Mohit Kumar and Bernhard Moser
Mach. Learn. Knowl. Extr. 2021, 3(1), 56-83; https://doi.org/10.3390/make3010004
Available online: https://www.mdpi.com/2504-4990/3/1/4

2. “Challenges of Machine Learning Applied to Safety-Critical Cyber-Physical Systems”
by Ana Pereira and Carsten Thomas
Mach. Learn. Knowl. Extr. 2020, 2(4), 579-602; https://doi.org/10.3390/make2040031
Available online: https://www.mdpi.com/2504-4990/2/4/31

3. “Mapping ESG Trends by Distant Supervision of Neural Language Models”
by Natraj Raman, Grace Bang and Armineh Nourbakhsh
Mach. Learn. Knowl. Extr. 2020, 2(4), 453-468; https://doi.org/10.3390/make2040025
Available online: https://www.mdpi.com/2504-4990/2/4/25

4. “Automatic Electronic Invoice Classification Using Machine Learning Models”
by Chiara Bardelli, Alessandro Rondinelli, Ruggero Vecchio and Silvia Figini
Mach. Learn. Knowl. Extr. 2020, 2(4), 617-629; https://doi.org/10.3390/make2040033
Available online: https://www.mdpi.com/2504-4990/2/4/33

5. “Analysis of Personality and EEG Features in Emotion Recognition Using Machine Learning Techniques to Classify Arousal and Valence Labels”
by Laura Alejandra Martínez-Tejada, Yasuhisa Maruyama, Natsue Yoshimura and Yasuharu Koike
Mach. Learn. Knowl. Extr. 2020, 2(2), 99-124; https://doi.org/10.3390/make2020007
Available online: https://www.mdpi.com/2504-4990/2/2/7

6. “Review on Learning and Extracting Graph Features for Link Prediction”
by Ece C. Mutlu, Toktam Oghaz, Amirarsalan Rajabi and Ivan Garibay
Mach. Learn. Knowl. Extr. 2020, 2(4), 672-704; https://doi.org/10.3390/make2040036
Available online: https://www.mdpi.com/2504-4990/2/4/36

7. “Monitoring Users’ Behavior: Anti-Immigration Speech Detection on Twitter”
by Nikolaos Pitropakis, Kamil Kokot, Dimitra Gkatzia, Robert Ludwiniak, Alexios Mylonas and Miltiadis Kandias
Mach. Learn. Knowl. Extr. 2020, 2(3), 192-215; https://doi.org/10.3390/make2030011
Available online: https://www.mdpi.com/2504-4990/2/3/11

8. “COVID-19 Symptoms Detection Based on NasNetMobile with Explainable AI Using Various Imaging Modalities”
by Md Manjurul Ahsan, Kishor Datta Gupta, Mohammad Maminur Islam, Sajib Sen, Md. Lutfar Rahman and Mohammad Shakhawat Hossain
Mach. Learn. Knowl. Extr. 2020, 2(4), 490-504; https://doi.org/10.3390/make2040027
Available online: https://www.mdpi.com/2504-4990/2/4/27

9. “Semi-Supervised Adversarial Variational Autoencoder”
by Ryad Zemouri
Mach. Learn. Knowl. Extr. 2020, 2(3), 361-378; https://doi.org/10.3390/make2030020
Available online: https://www.mdpi.com/2504-4990/2/3/20

10. “Focal Liver Lesion Detection in Ultrasound Image Using Deep Feature Fusions and Super Resolution”
by Rafid Mostafiz, Mohammad Motiur Rahman, A. K. M. Kamrul Islam and Saeid Belkasim
Mach. Learn. Knowl. Extr. 2020, 2(3), 172-191; https://doi.org/10.3390/make2030010
Available online: https://www.mdpi.com/2504-4990/2/3/10