Table 1. 

Topic properties with definitions and relevant criteria of bibliometric mapping algorithms

Properties of topicsDefinitionCriteria for algorithm analysis
Cohesion Dense communication/Thematic similarity Structures searched for (community definition) 
  Cohesion-separation trade-off 
Various structural forms Knowledge connected in different ways Structures searched for 
  User’s degrees of freedom 
Local Researchers define topics Use of local information 
Overlapping One bibliometric entity belongs to several topics Finding overlaps and hierarchies 
Variable size Extent and degree of researchers’ engagement with a topic Flexible size distribution 
Properties of topicsDefinitionCriteria for algorithm analysis
Cohesion Dense communication/Thematic similarity Structures searched for (community definition) 
  Cohesion-separation trade-off 
Various structural forms Knowledge connected in different ways Structures searched for 
  User’s degrees of freedom 
Local Researchers define topics Use of local information 
Overlapping One bibliometric entity belongs to several topics Finding overlaps and hierarchies 
Variable size Extent and degree of researchers’ engagement with a topic Flexible size distribution 
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