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Andreas Harmuth, Mike Bogetofte Barnkob, Lars Rønn Olsen (Department of Health Technology, Technical University of Denmark)
Ever wondered what groundbreaking scientific discoveries lead to the state-of-the-art of your research field? Ever searched for the seminal publications describing these breakthroughs without luck? The search engines of PubMed, Google Scholar, etc., provide the means to search for literature using keywords, but their impact assessment is limited to citation numbers. We have developed a graph-based tool for exploring the literature related to your topic of interest. Your personalized Tree of Science is grown by first planting a seed in the form one or more publications of interest. The roots are then developed by iteratively adding articles citing the seed(s), the articles citing them, etc. This produces a directed acyclic graph, for which the betweenness centrality of each node is calculated. The top scoring nodes correspond to the seminal papers within the field of interest. These nodes are then re-sown as seeds to sprout the Tree of Science that developed from it. The resulting graph is beautifully visualized by organizing the nodes by time on the Y axis and by topic, determined by clustering the MeSH representations of the publications, on the X axis.