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First OPM Workshop Minutes


This is a summary of the discussion about the Open Provenance Model from the first Open Provenance Model Workshop. The discussion broadly covered the following areas in the OPM: Agents, Streams, Inference Rules, Collections, Artifacts, Edges, Alternates and Time. The result of this discussion was a suggestion to provide a minimal update to the OPM (OPM 1.01), which could be the basis to develop serializations.

In addition to these notes, there is also a chat log (see FirstOPMWorkshopChatLog).


ALERT! At the beginning of the meeting, there was a general consensus that the use of Agents was verbose. The same concept could be represented using other elements of the OPM. Instead, it was felt that the important part was the wasControlledBy edge. Hence, it was suggested that the term agent could be dropped. Instead of using agent, it was suggested that artifact (see Luc's slides, or process could be used instead. Perhaps, both could be used. It was suggested that perhaps an Agent was just a subclass of a process.

However, it was brought up that if by dropping agent the distinction between wasControlledBy and wasTriggeredBy becomes unclear and may need to be redefined.

Later in the meeting, Jim Myers argued for the need for agents especially in terms of modeling users and outside world entities (e.g. the NSF). It was felt that the agent provides some sort of context switch between these broad entities and digital processes.

Essentially, it was felt that there needs to be some mechanism for capturing the idea of a controlling hierarchy between entities whether using or not using agents.


Unclear Inference Rules




Long Running Processes



-- PaulGroth - 20 Jun 2008
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