2. How have the interaction data sets been used in research?

2.1 Interaction data sets used by various researchers

See some examples in Part 2 of CIDER book:

Stillwell, J., Duke-Williams, O.W. and Dennett, A. (eds.) (2010) Technologies for Migration and Commuting Analysis Spatial Interaction Data Applications, pp. 357, IGI Global, Hershey.