Pedro O.S. Vaz de Melo is an assistant professor in the Computer Science Department (DCC) of Federal University of Minas Gerais (UFMG).He has degree (2003) and Masters (2007) in Computer Science from the Pontifical Catholic University of Minas Gerais (2003). He got his Ph.D. at Federal University of Minas Gerais (UFMG) with a one year period as a visiting researcher in Carnegie Mellon University and a five months period as a visiting researcher at INRIA Lyon. His research interest is mostly focused on knowledge discovery and data mining in complex and distributed systems.