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To provide information efficiently to users with web service, we study information visualization techniques, especially focused on researcher network and graphic chart. In the viewpoint of data set and level of functionality, we analyze the following four academic information services, Authoratory, Research gate, Biomedexperts, and Academic. research. We analyze researcher network and graphic chart of each service and then propose evaluation criteria of visualization elements. We aim to contribute to practical development of technologies for information visualization that can enhance the usefulness of web information services.