| Popis: |
The study was composed of two parts. In the first part, it was emphasized that numerical analysis of relationships or networks was essential in the scientific study of group structure. Graph theory, especially the theory of directed graph, was introduced to the analysis of group structure, and basic concepts and definitions, such as adjacency matrix, reachability matrix, distance matrix, connectedness matrix, and clique, were explained briefly. Thereafter, procedures and techniques of matrix algebra and condensation of graph were shown by using data in hypothetical grooming network. In the second part, grooming interactions among free-ranging Japanese monkeys (Macaco fuscata) tabulated on matrices are analyzed by graph theoretical techniques. The structure of grooming networks among adult monkeys exhibited seasonal changes and cyclicity according to reproductive state. |
