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I want to associate to a group of resources a common property, like for example, the creation date. I am aware of two techniques to do this:

add a triple to each resource with the dc:date
have the group of resources described within the same contextual graph, and then add a triple about the context.

but I'd like to know better. What are the best practices on this ?

flag	asked Jan 26 at 3:47 Stefano Borini 307●7

Rob Sanderson · Answer 1 · 2010-01-27 00:01:17Z UTC

For 2, you could also consider the use of ORE Aggregations: http://www.openarchives.org/ore/

However, this doesn't answer question 1 at all, as you would only be associating the property with the set of resources, not each individual resource within that set.

To my knowledge, this is a very un-RDF concept. Is there a reason for not simply adding the property to each entry in the set?

Simon Reinhardt · Answer 2 · 2010-01-26 19:54:53Z UTC

A third way is to use POWDER which was created specifically for that.

For doing 2. you should take a look at the work of the DCMI Collection Description Community. For example you could attach cld:dateItemsCreated to a collection. I'm not sure if they say anything about inferring properties of items from properties of a collection though.

describing group of resources

2 Answers