Table 4.

Clusters of co-cited articles regarding the application of artificial intelligence in peripheral nerve injury and repair (data from 613 articles retrieved from the Web of Science Core Collection database)

Cluster ID	Size	Silhouette	Label (LLR)
#0	37	0.988	Cybernetic hand prostheses
#1	35	0.903	Ulnar nerve
#2	32	0.988	Corneal confocal microscopy
#3	22	0.957	Deep learning-based approaches
#5	12	1.000	Using coherent anti-Stokes Raman
#9	10	0.975	Assistive wheelchair system
#23	5	0.984	Selective recording

Silhouette refers to the average profile value of the clusters. Generally, clusters with a silhouette score > 0.5 are acceptable while those with a silhouette score > 0.7 have good clustering performance. Size reflects the number of articles contained in the cluster. A larger log likelihood ratio (LLR) value indicates that the clustering label is more representative of the cluster.