Today, digitalization is an unstoppable megatrend. The availability of large amount of digital traces of millions of people has created new opportunities for social scientists to study many aspects of life including health, energy, agriculture, transportation and public administration. In order to analyze this plethora of social data, pioneering social scientists have adopted computational methods from other disciplines (including machine learning, natural language processing and computer vision) which have now become the indispensable core of current scientific research and literature in social sciences.