Figure 1
The diagram shows three horizontally arranged rectangular sections connected by right-pointing arrows. The first block on the left is labeled “Data acquisition” and contains icons connected by arrows showing a flow from “Search terms” to a database cylinder labeled “Database”, and then to stacked sheets labeled “Dataset”. A right-pointing arrow leads to the middle block labeled “Direct citation network analysis”, which contains a small network diagram of three types of circles connected by lines and an encircled cluster from this network. Below this, three different colored circles are numbered from 1 to 3 and are labeled “Clusters”. Three arrows from the dataset icon in the first block extend toward three of the many circles in the second block and various solid lines connect the dataset with each of the circles in the second block. Another right-pointing arrow from the encircled cluster in the second block leads to the third block labeled “Topic analysis with Latent Semantic Analysis”, which shows some icons and the flow that starts with some sheet icons labeled “Corpus”, from here a downward arrow leads to a horizontal bar icon labeled “Processing”, another arrow leads further down to a block icon labeled “L S A”, and a rightward arrow from here points to a set of overlapping block icons labeled “Topics”.Methodology diagram. Source: Authors’ own work