Table 5. Quality assessment criteria.

No.	Quality assessment questions	Criteria scores
QAC1	Were the research purposes of the study clear?	“Yes” = 1/“No” = 0
QAC2	Was the structure of the HGR model shown?	“Yes” = 1, “Partly” = 0.5, and “No” = 0.
QAC3	Was the results of experiments shown?	“Yes” = 1, “Partly” = 0.5, and “No” = 0.
QAC4	Were the contributions of the study clear?	“Yes” = 1, “Partly” = 0.5, and “No” = 0.
QAC5	Did the article mention the future works?	“Yes” = 1/“No” = 0
QAC6	Was the limitation explicitly mentioned?	“Yes” = 1/“No” = 0
QAC7	Was the article published in an accreditation source?	Rank by IF/JCR Q1 = 2 or CVPR, ICCV, ECCV = 2, Rank by IF/JCR Q2 = 1.5, Rank by IF/JCR Q3 or Q4 = 1, no ranking = 0

Note:

*QAC, Quality Assessment Criteria.