Study on Library Books Lending Cooperative Competition Network

摘要

By collecting the books lending information in HeBei North University within one year, we build the database of books and their borrowers and the bipartite graph of describing the relationship between the two things in the paper. According to the two kinds of situation, whether the lending relationship exists between books and readers or not, and whether the number of days of borrowing books by the readers exists between books and readers or not, we build unweighted network and weighted network to get the relevant statistical properties respectively. The study found that these statistical properties both obey exponential distribution and the corresponding statistical properties are related in unweighted network and weighted network. It shows that compared with unweighted network, the weighted network not only can describe the cooperative relationship and structure but also can accurately describe the competition result. What’s more, combined with the practice, we discuss the cooperative and competitive relationship within readers and books and between readers and books, and the practical significance owned by various statistical indicators in bipartite graph. Finally combined with the practice, we provide some suggestions for library purchase work.