Two-mode networks

1. Definition of two-mode networks
2. Transforming two-mode networks to ordinary valued networks
3. Normalisations of obtained valued networks
4. Line islands
5. Blockmodeling
6. Examples:
   • people and events - Davis Southern Club Women:
     • matrix,
     • two-mode network - figure 1,
     • two-mode network - figure 2,
     • valued network - women,
     • valued network - events.
   • Slovenian Journals and Magazines:
     • Geo normalisation: figure 1, figure 2,
     • MinDir normalisation: figure 1, figure 2.
7. Two-mode networks in Pajek

1. Analyse and draw given-two mode networks.

1. Analysis of given two-mode network:
   • visualization of two mode network using matrix and graph
   • transformation of two mode network to ordinary valued network
   • visualization of obtained valued networks using matrix and graph
   • analysis of obtained valued networks: islands and normalizations
   • blockmodeling: image matrix, block error matrix, reordered matrix according to clusters obtained
2. Interpretation of results.

1. Doreian, P., Batagelj, V. in Ferligoj, A. (1999): Clustering Networks: A Generalized Blockmodeling Approach (not published yet).