[Forthcoming in Encyclopedia of Complexity and System Science]
2-Mode Concepts in Social Network Analysis
Stephen P. Borgatti
Chellgren Chair and Professor of Management
Gatton College of Business and Economics
University of Kentucky
Lexington, KY 40506...
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[Forthcoming in Encyclopedia of Complexity and System Science]
2-Mode Concepts in Social Network Analysis
Stephen P. Borgatti
Chellgren Chair and Professor of Management
Gatton College of Business and Economics
University of Kentucky
Lexington, KY 40506 USA
sborgatti@uky.edu
Glossary
1. Definition of Subject
2. Introduction
3. Basic Concepts
4. 2-Mode Data in Social Network Analysis
5. Unimodal Approaches to 2-Mode Data
5.1. Visualization
5.2. Analysis
6. Bimodal Analysis
6.1. Visualization
6.2. Analysis
7. Conclusion
8. Future Directions
References
Glossary
2-Mode Matrix. A (2-dimensional) matrix is said to be 2-mode if the rows and columns
index different sets of entities (e.g., the rows might correspond to persons while the
columns correspond to organizations). In contrast, a matrix is 1-mode if the rows and
columns refer to the same set of entities, such as a city-by-city matrix if distances.
Blockmodel. A blockmodel is a partitioning of the cells of a matrix into blocks that is
in
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