RWTH Aachen University
Stressed the need for efficient Exploratory Search Systems (ESSs) i.e. systems optimized for investigation and learning tasks. Linked datasets now constitute valuable background knowledge for supporting exploration and discovery objectives through browsers, recommenders and exploratory search systems in particular. Today there is a need to look at the achievements and tendencies in this rapidly developing field in order to better orient the future research works. In this paper, the authors propose a survey of such systems from the earliest semantic browsers to more recent and innovative ones.