All posts tagged with metadata

In the Spring of 2022, the BHL Cataloging and Metadata Committee investigated the possibility of harvesting persistent identifiers (PIDs) from Wikidata as part of the group’s longstanding project to disambiguate and deduplicate author records in the BHL database. The motivation behind this one-time experimental data harvest was to see if BHL could:

1. Enhance BHL author records with additional PID data points;
2. Improve the committee’s ability to disambiguate author names in the BHL database; and
3. Respond to an outstanding user request from two of Wikimedia’s super star editors, Siobhan Leachman and Andy Mabbett, to expose BHL’s author data on BHL and include hyperlinks to other authoritative knowledge bases on the web.

In particular, Wikimedians wanted to see the Wikidata Q identifier exposed, providing a link to the corresponding creator item record in Wikidata.

There are multiple motivations for undertaking this work. By adding the BHL Creator ID to the corresponding Wikidata item, Wikidata editors help link BHL to the richer biographical data about that person held in Wikidata. The Wikidata item for a person may contain links to their Wikipedia page or to images of the person held in the image repository Wikimedia Commons. Wikidata items also act as identifier hubs and contain links to other databases and identifiers.

By adding the BHL Creator ID to this list of identifiers, the Wikidata editor is linking the content held in BHL to the content held in multiple other datasets and repositories.

These extra author data points provide Wikimedians and BHL catalogers with crucial clues that aid in name disambiguation. In particular, hyperlinks to other knowledge bases are incredibly valuable because they lead to new knowledge pathways that help confirm a person’s identity in a complex game of “Who’s Who?”

In October 2020, BHL launched a new working group with a momentous goal: to make the content on BHL persistently discoverable, citable and trackable using DOIs (Digital Object Identifiers).

A DOI is like an electronic fingerprint in the form of a unique and permanent alphanumeric string that provides a persistent link to a piece of content online. Modern publications receive a DOI at the point of publication. A DOI is a key part of a publication’s bibliographic metadata and should be included in any mention or citation of that publication. Reference lists in modern publications are filled with DOIs, which allows readers to click from publication to publication in (in theory) a never-ending chain of knowledge.

We have updated the bibliography pages in BHL to streamline the presentation of information about and metadata export options for content in the Library.

BHL is pleased to announce that it has added its bibliographic records to OCLC’s WorldCat® database, “the world’s largest network of library content and services.” You can now find BHL e-books via https://www.worldcat.org/. With thousands of libraries worldwide participating in OCLC, contributing our records to this “global library cooperative” allows us to extend the discoverability and access of BHL e-books through its variety of tools and services.

On 10 April 2019, we will implement additions and changes to the export files available from the Biodiversity Heritage Library.

The updates involve the following:

1. A new set of exports will be created alongside the existing exports. The new set will contain only data for material that is hosted by BHL. No externally-hosted content will be included in these files. Because these files are added in addition to the existing export files, no existing users should be affected.
2. The BHL author Identifiers will be added to the creator.txt and partcreator.txt tab-delimited files. The format of these files will change to accommodate the additional data; the author identifier will now be the second “column” in each file. Because of this, anyone regularly harvesting from these files may be affected.