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Table 1 Keyword sets with top frequency 10, 20, and 30

From: Research paper classification systems based on TF-IDF and LDA schemes

Top frequency 1–10 Top frequency 11–20 Top frequency 21–30
Cloud computing Map-reduce Game theory
Internet of things Semantic web Data mining
Big data Energy efficiency High performance computing
Security Virtualization Provenance
Scientific workflow Clustering Performance evaluation
Scheduling Smart city Machine learning
Resource management Task assignment Mobile
Cloud storage QoS Network
Privacy Hadoop Distributed system
Cloud Distributed computing Wireless sensor network