Why don I see all of my collection in WorldCat Collection Analysis?
The data in WorldCat Collection Analysis comes from your institution’s holdings in WorldCat. Institutions that do not add all their holdings into WorldCat or that do not keep their holdings in WorldCat up-to-date will see a discrepancy when comparing their local catalog holdings to their WorldCat holdings. • I keep my WorldCat holdings up-to-date, but I still see a discrepancy in the number of holdings in my local catalog and the number of holdings in Collection Analysis. This could be the result of several things. Some functions within WCA use FRBR-like applications, meaning that bibliographic information for different editions or formats of a given title are grouped into a multi-version record. WCA data is title-level data, meaning that multi-volume sets like encyclopedias may be collapsed into one WorldCat record, but have been catalogued as individual items in your local catalog.
