Upload
karen-calhoun
View
1.014
Download
0
Embed Size (px)
DESCRIPTION
Using the framework of the recent WorldCat Quality report and a sample of titles that circulated from PittCat, quantitatively assesses the user's success rate starting in Google Books and switching into a specific library catalog using the "Find in a library" feature and OCLC WorldCat holdings information.
Citation preview
Karen Calhoun Prepared for ULS Technical Services and Systems
Staff and OCLC Visitors February 1, 2012
Global Council Webinar
January 27, 2011
Library Professionals ◦ Catalogers
◦ Librarians of all types
General Web Users ◦ Expert searchers
◦ End users (I just want to get stuff)
Machines (cross-system connections)
Discover it here
High traffic sites
LIKE GOOGLE
SCHOLAR
Get it
there
Holders of
content
LIKE PITT ULS
Our catalogs continue to be used.
65% of information requests originate off-campus; the other 35% originate on campus mainly during class hours
External sites drive a lot of traffic to our websites. Google is the top referrer.
Page 4. http://conservancy.umn.edu/bitstream/48258/3/DiscoverabilityPhase1Report.pdf
Success (quality) in navigating from discovery to delivery relies on: • Basic bibliographic data elements
• Reliable holdings data
• Accurate linking data that stitches
different systems together (often, this data is numeric)
• Authentication (for licensed content)
http://www.oclc.org/reports/worldcatquality/214660usb_WorldCat_Quality.pdf
Data quality issues affecting the end user’s discovery and delivery experiences
Putting the world in WorldCat
Managing duplicates
“Parallel records”
Reproductions and reprints
Holdings “scatter”
Less visibility and utility of library assets represented in WorldCat
OCLC numbers less effective in “switching” users from records in WorldCat to records in local catalogs
http://www.worldcat.org/oclc/254256771 (This is the record that Google Books links to)
10 library holding symbols are on this record (but not Pitt’s)
244 library holdings are on this record (including Pitt’s)
http://www.worldcat.org/oclc/57640223
GLIMIR = Global LIbrary Manifestation IdentifieR
• Uses algorithms to cluster records for parallel records and for reproductions
• Ameliorates “holdings scatter”
• In practice this means … • Cleaner displays of search results
• Better linking to local catalogs WHAT?
Google Books PittCat
(via WorldCat)
Sample of titles that circulated the week of October 16-22, 2011 (3,760 items)
Thanks to Barbara H. , Elvia A-R. and Heidi C.
How successful is the user at starting with
Google Books and getting to PittCat holdings and services?
Focus on printed books
At 90% confidence level, margin of error of these results is + or – 5%
Start in Google Books
Find holdings in WorldCat
End in Pitt’s catalog
Circulations Examined
221
Found in Google Books
92.3%
English Language Content
90.1%
Top reasons not found in Google Books: non-English; this edition not found; non-book
“Find in a library link” present in Google Books
94.0%
“Find in a library link” missing
6.0%
ISBN is present* 96.6%
Item was digitized in GB Library Project
23.5%
*Percentage of ISBNs present would have been much smaller if sample had been drawn from collection as at large, rather than from items that circulated.
Pitt is in WCat library holdings list
78.8%
Link to PittCat is successful*
74.4%
Top reason for Pitt’s not being in WCat library holdings list: issues with representation of Pitt holdings in WCat Top reason for unsuccessful conversion to PittCat from WCat holdings list: absent/non-matching ISBN in Pitt record
*If user is searching from inside Pitt network (on-campus), link to PittCat is successful 94% of the time.
“You are connected to the Univ of Pittsburgh network” … provides option to do on-the-fly ISBN search of PittCat.
Google Books provides good coverage of English-language materials that circulate at Pitt
Google Books provides the “find in a library link” most of the time
There is room to improve the representation of Pitt’s holdings in WorldCat
The quality of the data supporting linking and delivery is as important, if not more important, than the data elements supporting discovery