ALCTS CCS Cataloging Norms Interest Group June 25, 2011 1:30-3:30 p.m . Karen D. Miller

1. ALCTS CCS Cataloging Norms Interest Group June 25, 2011 1:30-3:30 p.m. Karen D. Miller Monographic/Digital Projects Cataloger Bibliographic Services Dept. Northwestern University Library Evanston, IL k-miller3@northwestern.edu

2. What's that Keyword search Finding? Subject Headings, Tables of Contents, and more

3. 2008 study of TOC enhancement effect on circulation • Overview of NUL's OPAC operations and usage • Keyword Matching in the MARC record

4. About Northwestern University Library • NUL is a research library with over 5million volumes held on campuses in Evanston and Chicago, Illinois.

5. About Northwestern University Library • NUL is a research library with over 5million volumes held on campuses in Evanston and Chicago, Illinois. • TOC fields have been added to bibliographic records since 2002 until recently using Blackwell Book Services’ TOC service. TOC fields will soon be added using Yankee’s services after Yankee purchased Blackwell. • eldsat NUL. • At $1.05 per record, we wanted to determine if they made a statistically significant difference in circulation.

6. About Northwestern University Library • NUL is a research library with over 5million volumes held on campuses in Evanston and Chicago, Illinois. • TOC fields have been added to bibliographic records since 2002 until recently using Blackwell Book Services’ TOC service. TOC fields will soon be added using Yankee’s services after Yankee purchased Blackwell. • Over 87,000 vendor TOCs have been added to MARC 505 fields at NUL.

7. About Northwestern University Library • NUL is a research library with over 5million volumes held on campuses in Evanston and Chicago, Illinois. • TOC fields have been added to bibliographic records since 2002 until recently using Blackwell Book Services’ TOC service. TOC fields will soon be added using Yankee’s services after Yankee purchased Blackwell. • Over 87,000 vendor TOCs have been added to MARC 505 fields at NUL. • At $1.05 per record, we wanted to determine if they made a statistically significant difference in circulation.

8. TOC in the catalog

9. Study Objectives • Sought to replicate a 1997 study done at the University of New Mexico Health Sciences Center Library by Ruth C.T. Morris • Hypothesis: that the inclusion of Table of Contents (TOC) fields in bibliographic records influences circulation

10. Study Results • Enhancement of catalog records with TOC fields was the most significant factor in determining whether a book had an increase in circulation. • A book with a TOC-enhanced bibliographic record was 24% more likely to have a circulation increase than a book without a TOC-enhanced record.

11. Additional Research • At the end of this study we wondered about keyword search results …. • What percent of keywords were found only in the TOC field? • What percent were found only in the subject heading fields? • What percent were found in transcribed fields?

20. OPAC searching at NUL • Examined OPAC search logs from June 1, 2007 through May 31, 2011

21. OPAC searching at NUL • Examined OPAC search logs from June 1, 2007 through May 31, 2011 • Four years : over 9,750,000 queries

22. On average, 7,016 queries per day

23. Variation by Month

24. 72.3 % of queries through Basic Search

25. 6.8 % of queries through Guided Search

26. 0.1 % of queries through Course Reserve

27. 20.8 % of queries through Z39.50

28. 7.9 % of queries applied limits

29. 41% of queries produced no results

30. Keyword Searching Analysis • 7 days of query data • 3,015 randomly selected queries • Keyword searches only – no indexed searches • Included Boolean searches and quoted phrases

31. 27.5% of queries used keywords only

32. 86% of queries used only one keyword (including keyword phrases)

33. MARC fields in which search terms most commonly found 245 Title Statement 505 Formatted Contents Note 650 Subject Added Entry-Topical Term 260 Publication, Distribution, etc. (Imprint) 700 Added Entry-Personal Name 500 General Note 651 Subject Added Entry-Geographic Name 100 Main Entry-Personal Name 710 Added Entry-Corporate Name 520 Summary, Etc. 600 Subject Added Entry-Personal Name 246 Varying Form of Title 830 Series Added Entry-Uniform Title

34. Some MARC fields that surprised me: 040 Cataloging Source 041 Language Code 049 Local Holdings 074 GPO Item Number 300 Physical Description 856 Electronic Location and Access

41. 28.3 % of searches found matches in Table of Contents (505)

42. 27.9 %of searches found matches in Subject headings (600, 610, 611, 630, 650, 651, 655)

43. 45.7 %of searches found matches in Transcribed fields (other than 505: 245, 246, 247, 260, 490)

44. 42 %of searches found matches in Notes fields (including 505)

45. 43.1 %of searches found matches in Controlled Vocabulary (Subject headings (controlled), Main or Added Entries, except Series)

46. 24.6 %of search terms in Table of Contents but not in an LC Subject Heading

47. 24.2 %of search terms in an LC Subject Heading but not in a Table of Contents

48. 20.1 %of search terms only in Table of Contents

49. 11.6 %of search terms only in an LC Subject Heading

50. What Subject Headings and Tables of Contents add