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Semantic Memory"The concept of a Semantic Memory was first proposed by Seth Russell, who suggested that personal database dumps of RDF that one has collected from the "rest" of the Semantic Web (a kind of Semantic Cloud) would be imperative for maintaining a coherent view of data. For example, a SEM would most likely be partitioned into data which is inherent to the whole Semantic Web (i.e., the schemata for the major languages such as XML RDF, RDF Schema, DAML+OIL, and so on), local data which is important for any Semantic Web applications that may be running (e.g. information about the logic namespace for CWM, which is currently built in), and data that the person has personally been using, is publishing, or that has been otherwise entered into the root context of the SEM." Paul Palmer [IN01] Of course the structure of SEM will probably go well beyond the normal triples of the RDF structure. It is much more likely to be in quads or even pents. The extra field would be needed for contexts which are an StID. This will make it easy to manipulate data added in a certain context by editing all triples with a certain StID.
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