[mdx] MDX & expressing communites-of-interest

[Josh Howlett]

> Another approach would of course be for the aggregator to use 
> the list of entities from the affiliation entity (however 
> acquired) to generate an aggregate containing only those 
> entities.  I'm not keen on this, though, as it only works 
> when everyone you want to talk to is in exactly one such collection.

Which is precisely the effect I want to achieve :-). I want one
collection for Web SSO, another for eduroam, another for perfSONAR, etc.

Are our porpoises uncrossed?

josh.


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