  Fractional counting of citations can improve on ranking of multi-disciplinary
research units (such as universities) by normalizing the differences among
fields of science in terms of differences in citation behavior. Furthermore,
normalization in terms of citing papers abolishes the unsolved questions in
scientometrics about the delineation of fields of science in terms of journals
and normalization when comparing among different journals. Using publication
and citation data of seven Korean research universities, we demonstrate the
advantages and the differences in the rankings, explain the possible
statistics, and suggest ways to visualize the differences in (citing) audiences
in terms of a network.
