Page 78 - RUICHSS 2023 Proceeding

University of Ruhuna ISSN: 2706-0063
Matara, Sri Lanka

includes 52 items, Cluster 2 (Red)- includes 28 items, Cluster 3 (Blue)-

includes 28 items, Cluster 4 (Yellow)- includes 23 items, Cluster 5 (Green)-
includes 20 items and Cluster 6 (Light Blue)- includes 2 items.

Figure 9: Co-occurrence of Keywords

Note: Developed by Author, 2023 using VOSviewer

5.7 Thematic Evolution of Keywords

Figure 10 represents how the research field grew with more advancements

in the themes. Between 1993-2003 main themes were SWDs and HE. Most

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