RWTH Aachen University
There has been a large growth of available semi-structured data on the Web, spurred both by governmental requirements for publishing public data, and by private sector, for various purposes. One such large initiative is the linked open data cloud. An increasingly important activity is to make sense of such published data, often exploring it as a prelude or as initial steps to perform some information-processing task. Exploration is then a generalization of the traditional search task, as it involves other operations beyond finding specific information.