Again, I think we should encourage more specificity than the boolean property flag.
One academic makes the following statements _:sillyAcademicsDataset a dct:Dataset ; prov:wasDerivedFrom realworld:commercialDataset . realworld:commercialDataset a dct:Dataset ; :tried-to-determine-license true . Second Academic makes these statements _:lazyAcademicsDataset a dct:Dataset ; prov:wasDerivedFrom realworld:commercialDataset . realworld:commercialDataset a dct:Dataset ; :tried-to-determine-license true . Combine this knowledge realworld:commercialDataset a dct:Dataset ; :tried-to-determine-license true ; :tried-to-determine-license false . Not very helpful. Take the rdfs:comment approach _:sillyAcademicsDataset a dct:Dataset ; prov:wasDerivedFrom realworld:commercialDataset . realworld:commercialDataset a dct:Dataset ; dct:license [rdfs:comment "I tried to look at XXX, and believe its fair use because of YYYY" ] _:lazyAcademicsDataset a dct:Dataset ; prov:wasDerivedFrom realworld:commercialDataset . realworld:commercialDataset a dct:Dataset ; dct:license [rdfs:comment "Lazy academic did not care to look for the license"] Combine this knowlege realworld:commercialDataset a dct:Dataset ; dct:license [rdfs:comment "I tried to look at XXX, and believe its fair use because of YYYY" ], [rdfs:comment "Lazy academic did not care to look for the license"] . Its still use full. Then try this _:sillyAcademicsDataset a dct:Dataset ; prov:wasDerivedFrom realworld:commercialDataset . realworld:commercialDataset a dct:Dataset ; dct:license [a :UseAtOwnLegalRisk . rdfs:comment "I tried to look at XXX, and believe its fair use because of YYYY" ] Even more rich information an end user can actually use. One has to think about more than one re-publisher of a dataset, as that does happen in our field (see drugbank as a real life example). Regards, Jerven On Mon, Jun 23, 2014 at 5:17 PM, Alan Ruttenberg <alanruttenb...@gmail.com> wrote: > > > > On Mon, Jun 23, 2014 at 11:08 AM, Joachim Baran <joachim.ba...@gmail.com> > wrote: >> >> >> On 23 June 2014 06:37, Alan Ruttenberg <alanruttenb...@gmail.com> wrote: >>> >>> In the case that the license is not asserted it distinguishes the case >>> where the publisher has made an affirmative effort to determine what the >>> license is, or not. >> >> I cannot fathom how this could be inferred from the truth value of a >> bit. >> > > By documenting the property so as to make that explicit. How else do we > understand any property value? > > -Alan > -- Jerven Bolleman m...@jerven.eu