Knowledge Framework and Evolution of Fuzzy Portfolio Research: A Bibliometric Analysis

Table 10

Top 10 clusters based on size in the fuzzy portfolio research.

Cluster ID	Size	Silhouette score	Label (LLR)	Mean (cite year)
0	90	0.657	Multiperiod portfolio selection	2012
1	73	0.964	Bounds of variance	2015
2	68	0.738	Fuzzy variable	2010
3	67	0.809	Portfolio adjusting	2001
4	49	0.909	Hybrid intelligence	2004
5	42	0.834	Fuzzy logic	2012
6	40	0.885	Multicriteria decision analysis	2007
7	34	0.995	Fuzzy integer linear programming	1999
8	30	0.945	Sharpe’s single-index model	2002
9	24	0.964	Capital asset pricing model	2015