Creating a work, instance, and item
With the HipHop example, the cataloger can click the button that says “work” which will open up a form with fields that were included based on the “constant music record” macro or template that was identified by catalogers as relevant to this work.
This form creates the work, instance, and item and relates them to each other. At the work level, the cataloger can identify title, type, language, and lookup persons or organizations from the Library of Congress Name Authorities or from ISNI. Clicking on the “verify this match” link next to the selected entity from LOC will open up the LOC page describing the Real World Object to which we are linking this work.
Similarly, the cataloger can look up subject headings from the Library of Congress.
The next section shows instance level information where the title has been populated by what the cataloger entered at the work level. The cataloger can change the instance title before submitting the form. They can pick the type of the instance, lookup publishers from LOC, and lookup locations from GeoNames.
Hitting save will take the cataloger to the resulting work page which shows the information they entered at the work level and will allow them to add more information or edit existing information.
The grouping and display of properties is governed by decisions captured in SHACL metadata application profiles for the HipHop use case. For some of these properties, we created custom editing forms that will enable the cataloger to specify multiple related pieces of information together. We have also created custom displays which show more information than the default object label and link. For example, the physical instance or manifestation property provides a link from the work to the instance but also includes information about the instance such as publisher, date and location of publication, and audio issue number. Clicking on the name of the instance will take the cataloger to the linked instance entity. Next to the specific class of entity on work, instance, and item pages, we also display “work”, “instance”, or “item” to help identify the information the cataloger is viewing. The instance “audio example” thus shows “(instance)” next to the specific type “Audio disc”. Like the work page, the instance page has properties with information that the cataloger can view or edit. The “has item” property links to the item page which shows properties at the item level.
In addition to these links between work, instance, and item, VitroLib also uses Vitro’s “class group” pages that enable viewing entities that correspond to specific sets of classes. The work tab can show catalogers all entities classified as works. Similarly, the instance and item tabs will show instances and items cataloged in the system. The cataloger can also use search to look for entities based on keywords or titles.
The documents discussing lookups explain how the custom forms for adding genre forms work, so here we will provide two different examples of custom forms. A work could have song contents and these can be added using the custom form shown below. In this form, the cataloger can pick a work already existing in VitroLib or select the option to create a new work. They can also include information about an activity or role (e.g. composer) and a Library of Congress Genre Form term. The form thus enables adding many different relationships together. Once they have added the content listing, VitroLib will create the new work and provide a link to work under the content listing/track listing property. In this example, clicking the link takes the cataloger to the “song content” work page.
Another custom form example is that for adding a measurement group with separate measurements. In the ontology, the measurement group can be associated with multiple measurement entities where each measurement is associated with entities or values describing numeric value, unit, and dimension. The form below shows the fields for one of three possible measurements that can be added.
For the ARM and ArtFrame VitroLib instances, we updated the work/instance/item button on the home page to show Text or Text/Image/Object respectively. The resulting form is simpler than the HipHop form and allows the cataloger to specify the title and title type at each of the work, instance, and item level.
When the cataloger saves this form, the corresponding work, instance, and item entities are created in the system and the cataloger is redirected to the resulting work page. The property groups and properties on this page are based on SHACL profiles for ARM and ArtFrame.
