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(A) CiteSpace uses log-likelihood ratios (LLR) to obtain clustering results and add labels to the co-cited publications. Different patterns represent a cluster. Label # indicates the cluster to which it is assigned, and the smaller the number, the more co-cited studies are in the cluster, (B) A timeline visualization of co-cited literature in CiteSpace, and (C) CiteSpace Visualization map of the top 25 most cited reference.
