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Prototype for provenance tracking mechanism #259

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@huard huard commented Sep 3, 2021

This builds on @dcherian work to track history and cell_method and adds basic provenance tracking.
#228 (comment)

It's inspired by what metaclipR is doing.

Things to do:

  • xarray: grab more context information for function calls (dimension, arguments)
  • Add nodes for call arguments ds:Argument
  • Inference mechanism to detect relevant terms in an ontology. For instance, CMIP5 is defined, so when we find a project or project_id called CMIP5, we should try to refer to it instead of creating a new ds:Project entry as is done here.
  • Make sure the logic works when multiple functions are chained.
  • API to save (serialize) the graph in an external file when dataset is written to disk.

I'm hoping someone can take over for a while because I won't be able to invest a lot of time on this in the near future.

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