Chronia: visualizing how developers change software systems

To understand a certain issue of the system we want to ask the knowledgeable developers. Yet, in large systems, not every developer is knowledgeable in all the details of the system. Thus, we would want to know which developer is knowledgeable in the issue at hand. In this paper we present the Chronia tool that implements the Ownership Map visualization to understand when and how different developers interacted in which way and in which part of the system