Trust

Trust

Trust is a complex philosophical, social and technical notion, but it underlies many of our digital interactions including e-commerce and collective intelligence. In this lecture we will look at how different disciplines, including Psychology, Sociology and Economics have come to understand Trust through the lens of their own studies, aims and goals, and will explore how computer scientists and software engineers have implemented trust models based on policy, provenance and reputation. We will take a closer look at both Global and Local reputation-based trust, and see how assumptions of transitivity and asymmetry are useful. Finally we will look at trust in information, otherwise known as credibility, and look at the phenomenon of fake news and how trust methods have been used to combat it.