"How is the document utilization rate of the library calculated?"

First, analyze the book utilization rate according to the annual statistics.

Utilization ratio = borrowing amount/loanable document amount.

This paper makes statistics on the literature utilization of the stacks by species and volumes respectively. So, what's the difference between these two statistical methods? Because every book in the library not only has 1 volume, but also has a certain number of copies, such as 100 volume, and each book has 10 volume. If five different books are lent out in a period of time, the statistical utilization rate is 50% by category and 20% by book.

Therefore, the results of statistics by species are rougher than those by books.

Secondly, the utilization rate of books is statistically analyzed by category.

Utilization ratio = borrowing amount/loanable document amount.

According to the classified statistics, we can see the reading tendency of readers, which books readers prefer to read and which books readers seldom read, which are clear at a glance.