Table 1 Largest clusters of co-cited references among the 130 clusters

From: Emerging trends in GIS application on cultural heritage conservation: a review

Cluster-ID

Size

Silhouette

Mean (Year)

Label (LLR)

0

41

0.94

2014

Cultural heritage assessment (39.63, 1.0E−4); historical map (24.94, 1.0E−4); anthropic risk (24.94, 1.0E−4); land use change (21.32, 1.0E−4); luxor city (21.32, 1.0E−4)

1

36

0.888

2018

Conservation management plan (22.3, 1.0E−4); Twentieth-century architectural heritage (22.3, 1.0E−4); photogrammetric technique (19.78, 1.0E−4); affordable degradation mapping (19.78, 1.0E−4); foss gis (19.78, 1.0E−4)

2

34

0.927

2018

Preventive conservation (21.72, 1.0E−4); restoration monitoring (21.72, 1.0E−4); fuzzy logic (21.72, 1.0E−4); extreme precipitation trend (18.96, 1.0E−4); andalusia spain (18.96, 1.0E−4)

3

29

0.992

2015

Using gis tool (24.94, 1.0E−4); vernacular heritage landscape (24.94, 1.0E−4); heritage value (24.94, 1.0E−4); abandoned vernacular landscape (19.86, 1.0E−4); sustainable tourism strategies (19.86, 1.0E−4)

5

17

0.97

2017

Other information technique (22.83, 1.0E−4); heritage modeling (22.83, 1.0E−4); damaged cultural heritage (15.05, 0.001); multiscale 3d gis (15.05, 0.001); southern Italy (7.44, 0.01)

6

17

0.972

2019

Degrees photography (21.51, 1.0E−4); cultural heritage building (21.51, 1.0E−4); digital documentation (21.51, 1.0E−4); scanning technologies (21.51, 1.0E−4); dissemination assessment (16.05, 1.0E−4)

7

14

0.982

2016

Non-invasive methodology (23.59, 1.0E−4); historical document (23.59, 1.0E−4); documentation management (17.59, 1.0E−4); cultural heritage data (11.65, 0.001)

19

8

1

2017

Mapping (14.73, 0.001); assessment (14.73, 0.001); aesthetic quality (14.73, 0.001); landscape (14.73, 0.01)