Let me start by talking about my project. The topic is about abstracting trace events to synthetic events and creating link between synthetic and raw events. Trace abstraction groups raw event and creates compound synthetic evetns. Linking between these compound synthetic events and the raw events is not obviuse. So I try to find an efficent way to model this linking. Having this link, users will be able to navigate trace events at different levels and find real reasons for system missbehaviours. You can find  detailed description of the project here.