How We Reverse Engineered the Cuban “Sonic Weapon” Attack

Throughout last year, mysterious ailments struck dozens of U.S. and Canadian diplomats and their families living in Cuba. Symptoms included dizziness, sleeplessness, headache, and hearing loss; many of the afflicted were in their homes or in hotel rooms when they heard intense, high-⁠pitched sounds shortly before falling ill. In February, neurologists who examined the diplomats concluded that the symptoms were consistent with concussion, but without any blunt trauma to the head. Suggested culprits included toxins, viruses,

A Brief Introduction to Machine Learning for Engineers

This monograph aims at providing an introduction to key concepts, algorithms, and theoretical frameworks in machine learning, including supervised and unsupervised learning, statistical learning theory, probabilistic graphical models and approximate inference. The intended readership consists of electrical engineers with a background in probability and linear algebra. The treatment builds on first principles, and organizes the main ideas according to clearly defined categories, such as discriminative and generative models, frequentist and