IDAL member José D. Martín gave the second talk of the Seminars on Mathematics for Challenges in Technology and Society MathChats at Universitat Politècnica de València (Mathchats). The talk gave an overview of classical Machine Learning and its connection with Quantum Computing and Quantum Information as the basis for Quantum Machine Learning, a novel but very active field of research: https://mathchats.webs.upv.es/2019/12/mathchat-on-friday-january-27th-machine-learning-in-the-classical-and-quantum-realms-prof-jose-d-martin-guerrero-idal-department-of-electronic-engineering-universitat-de-valencia-spain/