In the real world parties are interdependent, rather than independent. Relational ties between them are the channels for flow or transfer of the material or nonmaterial resources - information for instance. Network perspective differs in a fundamental way from standard methods, because it views characteristics of the units as arising out of structural or relational processes or focuses on properties of the relational systems themselves. The task is to understand properties of the structural environment, and how these structural properties influence observed characteristics and associations among the units. The goal of analysis is to obtain from the low-level relational data a higher-level description of the structure of the system

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