Dear all

I would like to introduce Emil Riis Hansen to the Bonsai community. He has been recently employed as a research assistant with the computer science department at Aalborg University. 

Emil is interested in working with adding provenance to our current BONSAI ontology. 

Provenance helps us add information on the origin of data.i.e where does the data come from/ who generated the data/ licence of the data etc. We had discussed this issue during the hackathon but hadn't developed it since.
Currently Emil has proposed a high level provenance which is limited to determining the origin of the dataset and not individual values in it. For example, if anyone queries data from BONSAI, they will get the info that the data is sourced from Exiobase, but if other datasets are integrated to semantic web using Bonsai ontology, they will find information on the origin of that dataset. Provenance of individual values in a dataset is harder to determine as they may be calculated, estimated, or raw data from the data provider.

Emil is currently also preparing a conference paper with respect to how he plans to add provenance to the current ontology. For the purpose of this paper, it would be useful to upload the provenance information to the current rdf data we have on the Jena database. This will help the reviewers query the information as presented in the paper.

If anyone here has been working with provenance or are interested, please feel free to write to me.
Kind regards

Agneta

Dear all

I would like to introduce Emil Riis Hansen to the Bonsai community. He has been recently employed as a research assistant with the computer science department at Aalborg University. 

Emil is interested in working with adding provenance to our current BONSAI ontology. 

Provenance helps us add information on the origin of data.i.e where does the data come from/ who generated the data/ licence of the data etc. We had discussed this issue during the hackathon but hadn't developed it since.
Currently Emil has proposed a high level provenance which is limited to determining the origin of the dataset and not individual values in it. For example, if anyone queries data from BONSAI, they will get the info that the data is sourced from Exiobase, but if other datasets are integrated to semantic web using Bonsai ontology, they will find information on the origin of that dataset. Provenance of individual values in a dataset is harder to determine as they may be calculated, estimated, or raw data from the data provider.

Emil is currently also preparing a conference paper with respect to how he plans to add provenance to the current ontology. For the purpose of this paper, it would be useful to upload the provenance information to the current rdf data we have on the Jena database. This will help the reviewers query the information as presented in the paper.

If anyone here has been working with provenance or are interested, please feel free to write to me.
Kind regards

Agneta

Thanks for the document Bo

The document recommends timestamping of the datapoints and query outputs. Although I am unsure what degree will we be able to add provenance to each value on Exiobase. Although Exiobase does use data from multiple sources it adds some algorithms to provide a balanced dataset. In other words, its a secondary dataset (primary datasets are those which contain raw data)

If in future some values are changed, this leads to the publication of a new version of the dataset. So the provenance for all values in exiobase is generated as exiobase + (specific version).
My question is do we need to have provenance of individual values in a secondary dataset. Its different when we have minute by minute information of temperature change in a region (raw data). Here the timestamping of individual values might be more relevant.

What do you think?
Agneta