Table 1 Examples of the initial clustering results based on LDA

The Stone Town of Zanzibar is an outstanding physical manifestation of cultural integration and harmony.

Outstanding material performance

35

58.92

1

Feature word

Cultural integration

107

50.26

2

Feature word

For many centuries, there was a great deal of maritime trade between Asia and Africa, and the architecture and urban fabric of Stone Town illustrates this in a special way.

Architecture and the city

95

72.61

1

Feature word

Gaudi’s work represents an outstanding series of examples of architectural typology in residential and public buildings at the beginning of the 20th century, and he made a significant and creative contribution to the development of architecture.

Outstanding examples

573

276.67

1

Feature word

Gaudi’s work

20

172.71

2

Feature word

Creative contributions

47

115.9

3

Stop word

The island city of Ibiza is an example of a fortified acropolis, which in a unique way preserves in its walls, street grid and urban fabric the successive imprints of the earliest Phoenician settlements, of the Arab and Catalan periods all the way to the Renaissance fortresses.

Defense walls

31

182.06

1

Attribute

Street patterns

96

147.83

2

Attribute

Special approaches

62

78.09

3

Stop word

Urban texture

141

74.04

4

Attribute

Renaissance

230

52.26

5

Feature word

The central areas of Ubeda and Baeza constitute outstanding early examples of Renaissance urban architecture and town planning in early 16th century Spain.

Urban planning

137

180.05

1

Feature word

Architecture and the city

95

72.61

2

Feature word

Renaissance

230

52.26

3

Feature word