Talis Aspire Digitised Content (TADC) uses a service called xISBN (from OCLC) to identify resources for the purposes of determining the work and all of its manifestations. When TADC is unable to identify a resource, it would currently stop the checking process, putting the request into a manual copyright checking process.
Though we feel that WorldCat (the source of xISBN data) is a comprehensive source of ISBNs, xISBN has over time become increasingly out of date with WorldCat data. With confirmation from OCLC that the xISBN service will no longer be updated and no indication of if and when an alternative service will be provided, we have decided to remove the TADC dependency on xISBN. We are doing so in two phases:
- Demarcating the xISBN request identification step from the rest of the copyright checks
- Introducing a new data source as an alternative to xISBN
This information covers the first phase with follow-up work planned shortly to address the second phase.
Changes to TADC (April 2017)
Resource identification sources
We have demarcated the xISBN request identification step from the rest of the copyright checks by introducing a number of alternative sources from which we will attempt to identify a request. TADC will still try to first identify a resource in xISBN, but it will no longer 'stop' if it's not found.
We will search each data source and if unsuccessful, will move on to the next source in the sequence below. If we are unable to identify the resource using any of the below sources, it will be referred as “Unable to identify the resource” and will require a manual copyright check. (We will be doing some additional work to integrate data from Nielson Book Data (NBD) as a new data source which will be the primary source, ahead of xISBN.)
- University’s library catalogue
- multiMarc (is a union catalogue set up to collect the needed bibliographic data from a series of major libraries, with open catalogues, around the world)*
If a request is identified in the catalogue or multiMarc, TADC takes the ISBNs found in the catalogue lookups (e.g. multiple 020s, etc.) and queries our internal bibliographic store with those. If it matches this, the concierge then tries to match xISBN with the ISBNs from the library catalogue and our own bib store. It then looks for existing works in TADC with all of the ISBNs we've found for the work. If the ISBN does not match, we explicitly tell the user that we could identify the resource, but not the work.
Once the request is identified, in the UK, TADC will then go on to check the CLA Check Permissions API.
Whilst using the latest edition is no longer a requirement of the licences of any of our supported regions, it is still a valuable check for a lot of our customers who chose to enable this by using the request outcome options in the settings area of TADC.
We have made changes so that we will always warn you, even where a resource has been successfully identified using xISBN and it thinks it’s the latest edition. This is because the data in the service has not been and will no longer be updated, so any new publications beyond early 2016 will not be included in xISBN, therefore we cannot rely on it for an accurate full manifestation and latest edition check. The library catalogue and multiMarc are also not considered as “trusted” edition sources.
We have some further work planned to introduce a new trusted edition source (using data from NBD), which we will use to resume the manifestation and editions checking.
If you have the latest edition request outcome option in the settings area set to refer or reject when it is not the latest edition, TADC will inform you that it is unable to determine the latest edition and this requires a manual check. This will be clearly outlined in the worklog, as well as a clear notification at the top of the request.
Copy limit checking
Copy limit checking for all of our supported regions is performed at the work level. In order to do this, TADC identifies all manifestations of a work and checks that the copy limit has not been exceeded for the work on a course or for the institution (depending on the copyright region).
Because we can no longer rely on xISBN for an accurate full manifestation check, we will no longer be using its data to determine the copy limits. TADC will refer for manual clearance when it is unable to perform a copy limit check and indicate why in the worklog.
When the data source for identifying the request is multiMarc or the university’s library catalogue, TADC cannot determine all of the manifestations of a work, so, therefore, it cannot determine the copied amount for the work and can’t perform a copy limit check. It can, however, determine the copied amount for that specific edition. TADC will refer for manual clearance when it is unable to perform a copy limit check and indicate why in the worklog as well as the notification at the top of the page described above (except for our Australian customers where copy limit applies across the institution and not the course)
When we have completed the work to include data from NBD, we will use this to resume the manifestation and editions identification which will enable us to perform copy checks.
What is multiMarc?
multiMarc is a union catalogue we've set up to collect the needed bibliographic data from a series of open catalogues. The union catalogue consists of:
- Nat. Library of Wales
- Nat. Library of Scotland
- Nat. Library of Ireland
- Trinity College Dublin
- Library of Congress
- University of Michigan
- University of Toronto
- University of Alberta
- University of British Columbia
- McGill University
- University of Quebec
- National Library of Australia