Related Work

Agent software is a rapidly developing area of research. According to the typology of Hyacinth S. Nwana xOperator is an interface agent for the Semantic Web.

Proposals and first prototypes which are closely related to xOperator and inspired its development are

• Dan Brickley's JQbus and 
• Chris Schmidt's SPARQL over XMPP.

However, both works are limited to the pure transportation of SPARQL queries over XMPP.

Quite different but the xOperator approach nicely complementing are works regarding the semantic annotation of IM messages.

• Nabu for example is a semantic archive for XMPP instant messaging which facilitates search in IM message archives.
• SAM suggests ways to make IM more semantics aware by facilitating the classification of IM messages, the exploitation of semantically represented context information and adding of semantic meta-data to messages.