We track and display views of SDR objects, either embedded on PURL pages or elsewhere, and how many times the files for these objects are downloaded. We aggregate views and downloads from users into a single visit, or session, to prevent overcounting. We also track the unique identifier of the object being viewed or downloaded and where the view or download originated (also known as the Referrer), e.g. the page embedding the object.
How do you define a view?
A view is defined as a distinct user (human or machine) loading an embedded SDR object during a one-hour time period. If a specific user loads the embedded object more than once during this hour, it is still counted as just one view.
Our embed viewer generates an HTML frame when an object is embedded in a page. We count loading of that frame as a view, regardless of whether it's embedded on a Stanford-owned website or externally.
What if the item has multiple versions?
The views and downloads numbers you see on the PURL pages include views and downloads for all versions of the item. In other words, if an item has been modified several times, what we are showing you is the total number of views or downloads for all the different versions of the item.