Table 6.

Summary of clusters

Cluster_ID	Label (LLR)	Cluster_size	Silhouette_value	Mean (cite year)
0	Disasters management	73	0.709	2010
1	IoT environment	59	0.607	2014
2	Emergency action plan	58	0.663	2010
3	Learning technique	58	0.71	2014
4	Emergency management	55	0.797	2009
5	Emergency management system	54	0.658	2011
6	Wireless sensor network	43	0.846	2010
7	Orthogonal frequency division	40	0.693	2008
8	Remote sensing data	14	0.869	2010