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BACKGROUND

Mobile devices with various methods of connectivity are now for many people becoming the primary gateway to the internet and also a major storage point for personal informa tion. This is in addition to the normal range of personal computers and furthermore sensor devices plus internet based providers. Combining these devices together and lately the applications and the information stored by those applications is a major challenge of interoperability. This can be achieved through numerous, individual and personal information spaces in which persons, groups of persons, etc. can place, share, interact and manipulate webs of information with their own locally agreed semantics without necessarily conform ing to an unobtainable, global whole. These information spaces, often referred to as Smart spaces, are extensions of the Giant Global Graph in which one can apply semantics and reasoning at a …