1Big data: The next frontier for innovation, competition and productivi-Ty [EB/OL] . (2012-08-01) . http://www.mckinsey com/Insights/MGI/Researchfrechnology_and_Innovation/Big_da- ta_The_nex t_frontier_for_innovation.
10Mike Buschman, Andrea Michalek. Are Alternative Metrics Still Alternative?[J]. Bulletin of the Association for Informa-tion Science and Technology, 2013, 39(4):35-39.