Armando Vieira is a Physicist turned into a data scientist. He started working on machine learning after his PhD in Physics in 1997. From the beginning he is an aficionado of Artificial Neural Networks, and recently he is focused on Deep Neural Networks, especially for unsupervised and semi-supervised learning problems. He has more than 50 publications and writing a book on business applications of Deep Learning. He works as a Data Scientist consultant on several companies and startups.