| Cluster category | Keywords |
| Cluster 1 | Twitter, information, social media, big data, media, challenges, communication, Internet. | Cluster 2 | Collaboration, field, h index, publications, journals, citation analysis, articles, publication, citation, indicators, index, bibliometrics, quality, metric analysis, impact, science, citation. | Cluster 3 | Framework, classification, behavior, systems, model, models, system, design, patterns, technology, innovation, network, performance, knowledge, risk, health, management, networks, dynamics, trends, evolution, economics. |
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