What is meant by deduplication?
Deduplication refers to a count of each title only once. If a title appears in both print and electronic form and the library has acquired it through several different providers, it would still be counted as one title. If it is not possible to deduplicate across libraries due to system limitations, a random sample of 1,000 serial titles can be generated from the branch library and an analysis of the overlap conducted. The resulting percentage overlap can be extrapolated to all the number of titles available for that branch to get an estimated figure of the title overlap for all serials held by a specific branch. Subtract the estimated title overlap from the main serial file and provide a footnote explaining the process.
