Tag: Index

ER&L 2012: Knockdown/Dragout Webscale Discovery Service vs. Niche Databases — Data-Driven Evaluation Methods

tug-of-war
photo by TheGiantVermin

Speaker: Anne Prestamo

You will not hear the magic rational that will allow you to cancel all your A&I databases. The last three years of analysis at her institution has resulted in only two cancelations.

Background: she was a science librarian before becoming an administrator, and has a great appreciation for A&I searching.

Scenario: a subject-specific database with low use had been accessed on a per-search basis, but going forward it would be sole-sourced and subscription based. Given that, their cost per search was going to increase significantly. They wanted to know if Summon would provide a significant enough overlap to replace the database.

Arguments: it’s key to the discipline, specialized search functionality, unique indexing, etc… but there’s no data to support how these unique features are being used. Subject searches in the catalog were only 5% of what was being done, and most of them came from staff computers. So, are our users actually using the controlled vocabularies of these specialized databases. Finally, librarians think they just need to promote these more, but sadly, that ship’s already sailed.

Beyond usage data, you can also look at overlap with your discovery service, and also identify unique titles. For those, you’ll need to consider local holdings, ILL data, impact factors, language, format, and publication history.

Once they did all of that, they found that 92% of the titles were indexed in their discovery service. The depth of the backfile may be an issue, depending on the subject area. Also, you may need to look at the level of indexing (cover to cover vs. selective). In the end, they found that 8% of the titles not included, they owned most of them in print and they were rather old. 15% of the 8% had impact factors, which may or may not be relevant, but it is something to consider. And, most of the titles were non-English. They also found that there were no ILL requests for the non-owned unique titles, and less than half were scholarly and currently being published.

NASIG 2008: Managing Divergence of Print and Online Journals

Presenters: Beth Weston and Deena Acton

The National Library of Medicine spent 2007 examined the impact of content differences between print and online journals on library operations and services. They then followed up on this in 2008. In evaluating the situation, the NLM team working on this project were tasked with locating the differences between print and online, noting them, and then determining their impact.

One thing that is worth noting here is that the NLM is an archival library, by which I mean they consider it a part of their mission to retain copies of everything they collect. And, their ILL service to other libraries is considered an essential function.

Because NLM is responsible for indexing content for MEDLINE, they were able to locate the differences through the indexing workflow. They have noticed that there is anecdotal evidence of an increase in online-only content. Aside from the indexing, which will be decreasing over time, differences between print and online are discovered by patrons and reference librarians, as well as interlibrary loan staff.

The working group recommends that publishers take responsibility for identifying the version of record, and develop and implement a standard for communicating that version to subscribers. However, that’s only a start. Libraries will then need to determine how they will note that in their records, as well as workflows for following up on it.

The set that the working group looked at included 149 titles from 58 publishers, in both print and online formats, but which had additional online-only content. Data was collected for a specific set of these journals on: number of complete articles in each edition, editorials, commentary/letters, book/media reviews, advertisements, announcements/calendar items, and continuing education materials. Notifications about new issues, author correspondence information, and other extraneous content that is format-specific was not considered.

Approximately 13% of the articles were online-only, and 18% of the articles contained article-level online-only supplementary materials. Based on the one year sampling, they estimate that 12,739 articles from these 149 titles could be online-only.

One reason why there may be an increase in the divergence is due to the volume of content publishers want to provide versus the cost of printing all of it. It is likely that as the cost of publishing ejournals decreases in relation to the cost of print publishing, we will see more of this divergence.

[Side note: I really wish we would move away from the “presenting the data from my study” sessions to “here’s how I applied the data from my study” sessions.]

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