Here are your readings for next Tuesday–hope you’re all having a great week!
P. Bryan Heidorn (2011). The Emerging Role of Libraries in Data Curation and E-science. Journal of Library Administration, 51(7-8): p.662–672. Online through Pratt: http://www.informaworld.com/openurl?genre=journal&issn=0193-0826
What is Data Management? (NOTE: Please read all 6 tabs on this guide: Research Data, Data Planning, Data Management, Data Security, and Data Sharing.) http://www.libraries.psu.edu/psul/pubcur/what_is_dm.html#what-is-data-management
Data Management 101 Checklist (University of Minnesota Libraries) https://netfiles.umn.edu/ul/Divisions/AcaProg/PhysSciEng/PSEShared/Instruction/Data%20Management/Public/Data%20Management%20Checklist%20Workshop.pdf
VIDEO: Linked Open Data: What Is It? (Europeana) http://vimeo.com/36752317
VIDEO: What is Linked Data? (Manu Sporny) https://www.youtube.com/watch?v=4x_xzT5eF5Q
Chapter 2: The Power of Linked Open Data, p. 22-29 in: Linked Open Data: The Essentials (by Bauer & Kaltenbock). http://www.semantic-web.at/LOD-TheEssentials.pdf
There are a lot of acronyms thrown around in the library world, and in particular a few are so similar (DDC/DC, RDA/RDF) that they can be hard to keep straight! This post is to help you refer back throughout the semester, to help keep this crazy alphabet soup straight. Here are a few related resources:
Here are some of the most frequently-used acronyms in our class:
- AACR2: Anglo-American Cataloging Rules, 2nd edition; a cataloging code (rules used for creating records)
- DC: Dublin Core, a metadata format
- DDC: Dewey Decimal Classification; a classification system often used in public and school libraries
- EAD: Encoded Archival Description; a metadata format used primarily by archives
- FRBR: Functional Requirements for Bibliographic Records; a model for bibliographic records that is based on relationships between information objects, which are grouped into four levels: work, expression, manifestation, and item
- ILS: Integrated Library System; a library automation system, which generally has interfaces for acquisitions, cataloging, and circulation
- LC or LCC: Library of Congress Classification; a classification system often used in academic libraries
- LCSH: Library of Congress Subject Headings; a standardized list of subjects used in catalog records to describe the content/aboutness of a information object
- MARC: Machine-Readable Cataloging; a cataloging structure & encoding format
- OCLC: formerly Online Computer Library Center; a collaborative library tool that provides access to shared bibliographic records to member libraries
- OPAC: Online Public Access Catalog; an online library catalog
- RDA: Resource Description & Access; a cataloging code designed to replace AACR2, based on the FRBR model
- RDF: Resource Description Framework; a model for online data interchange, which names the relationship between linked items
- XML: Extensible Markup Language; a markup language for information that is both human-readable and machine-readable
Our readings this week focused on classification and categorization, ways to organize (and describe) items based on their subject. As we’ve discussed in previous weeks, one of the primary purposes for classification is to collocate items on a shelf. That is, to ensure that similar items are shelved together. As we’ve also discussed, the utility of physical or shelf classification is questioned by some in this age of search engines and OPACs, while others point out the continued utility of physical or electronic browsing, which is enabled by classification. Examples of classification schemes are Dewey Decimal Classification (DDC) or Library of Congress Classification (LCC).
A few of the readings also mentioned subject categorization by the assignment of subject headings. Subject headings are designed to indicate an item’s “aboutness,” what a document is about, its topic or subject. One of the most popular subject heading lists is the Library of Congress Subject Headings (LCSH)—not to be confused with the LCC mentioned above. (Yet another example of confusing library-world acronyms!)
Although they both describe what an item is about, subject headings differ from classification schemes in a few ways:
- Subject headings are presented in words or phrases similar to natural language. Classification schemes use some form of notation to indicate a subject. (See example below.)
- Each item is assigned only one classification code (it can have only one physical shelf location). However, an item is often assigned multiple subject headings. (See example below.)
Example subject headings (LCSH) and classification code (LCC) for a book:
- Information organization.
- Information organization > Technological innovations.
- Library science > Information technology.
Finally, here are a few questions to prompt your thinking as you post to the blog. Feel free to answer any of these, or instead to post your own comment or question(s).
- What do you think of enumerative classification systems, as opposed to faceted or analytico-synthetic? What are some pros and cons of these systems?
- What do you think of Hjorland’s assessment of classification’s continued purpose in the age of search engines like Google?
- Rowley offered an in-depth look at subject heading systems. Like Hjorland, she concluded that these systems are still relevant for machine searching. Do you agree or disagree?
- Libraries still hold large collections of physical books, though many are housing increasing parts of these collections in off-site storage facilities. Is shelf classification still useful for a library’s physical collection, or are new methods of shelving by book size (retrieving by barcode, often assisted by robotics) sufficient?