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Re: RDF Semantics, non-lean RDF graphs, and redundancy of content

From: pat hayes <phayes@ihmc.us>
Date: Thu, 4 Dec 2003 11:47:35 -0600
Message-Id: <p06001f30bbf5235365a8@[]>
To: www-rdf-comments@w3.org


>>I don't quite understand the sentence "Non-lean graphs have internal
>>redundancy and express the same content as their lean subgraphs." From the
>>modelling point of view, this seems rather important. Perhaps the concept
>>"redundancy" should be defined in this context?
>Well, it was intended only as a helpful remark: the formal 
>definition stands by itself. The point of the word 'redundancy' is 
>that the content of one part of the graph can be inferred from other 
>parts. For example if the graph contains
>ex:pat rdf:type ex:human .
>_:x rdf:type ex:human .
>then it is redundant in this sense: the second triple adds no new 
>content to the first triple, and can be inferred from it. This graph 
>says in effect, Pat is human, and a human exists.  So this graph is 
>equivalent in content to the first triple alone, and could be 
>removed without changing the meaning of the graph.

That is, the second triple could be removed without, etc...


Pat Hayes
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Received on Thursday, 4 December 2003 12:47:38 UTC

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