2020 Journal Issues April 1, 2020 Regular Papers Volume 108, Issue 4 April 2020 Access the Full Issue Regular Papers Scanning the Issue Model Compression and Hardware Acceleration for Neural Networks: A Comprehensive Survey By L. Deng, G. Li, S. Han, L. Shi, and Y. Xie This article surveys recent advances toward the goal of efficient compression and execution of deep neural networks, without significantly compromising accuracy. A Key 6G Challenge and Opportunity—Connecting the Base of the Pyramid: A Survey on Rural Connectivity By E. Yaacoub and M.-S. Alouini This article provides a comprehensive survey of technologies that help address the challenging problem of connectivity in rural areas. A Tutorial on Clique Problems in Communications and Signal Processing By A. Douik, H. Dahrouj, T. Y. Al-Naffouri, and M.-S. Alouini This tutorial presents a framework for utilizing the clique problem in graph theory, for solving communications and signal processing problems. Point of View A Density Metric for Semiconductor Technology By H.-S. P. Wong, K. Akarvardar, D. Antoniadis, J. Bokor, C. Hu, T.-J. King-Liu, S. Mitra, J. D. Plummer, and S. Salahuddin Access the Full Issue Share: