Machine learning is slowly changing the world -- helping cars to "see" the world around them and virtual assistant to understand our questions and commands. Driving forward machine-learning research are companies like Facebook, Google and Baidu -- each of which are identifying new applications for the technology. But how is the field of machine learning changing and what factors are shaping its future direction? Yangqing Jia, director of engineering for Facebook's AI platform team, spoke about the changing nature of the field at the recent AI Conference presented by O'Reilly and Intel AI in London. In supervised learning, the system learns by example, typically by analyzing labelled data, for example, photos annotated to indicate whether they contain a cat.