There are several different types of usage metric in Release 5, which break down into investigations and requests.
An investigation is tracked when a user performs any action in relation to a content item or title, while a request is specifically related to viewing or downloading the full content item (see Figure 1).
Susan is researching the history of antibiotics on Publisher Platform Alpha. From a list of search results, she opens three article abstracts and a video record. All four records are different, but two of the articles are from the same journal. The counts are:
After reading the abstracts, Susan downloads the PDFs for two of the articles, both from the same journal. The counts change to:
· total_item_investigations: 6
· unique_item_investigations: 4
· unique_title_investigations: 3
· total_item_requests: 2
· unique_item_requests: 2
· unique_title_requests: 1