Recording Actor State in Scientific Workflows

The concept of “actor” provenance data – essentially data that a client or service actor may assert about itself regarding an interaction, is presented. Actor provenance data can be combined with assertions of interaction to enable better reasoning within a provenance system. The need for recording and maintaining actor provenance data is discussed, along with the description of an architecture that can enable such recording. The types of data that may be recorded are subjective, and dependent on the nature of the application and the eventual use that is likely to be made of this data. A registry system that allows monitoring tools to be related to user needs is described with reference to an application scenario