In cases where the data needed to operate effectively is distributed widely, changes rapidly, and can not or must not be combined in any way that would allow it to be controlled, semantic web technologies are essential. In such circumstances, all of the data needed must be created and maintained by the separate parties involved. But the most valuable results will be obtained by combining it all together, in real time. Problems of this sort are what the semantic web vision addresses.
语义网技术用例In semanticweb on October 7, 2006 at 9:48 AM