Carol Anne Meyer talks about CrossRef DOIs and how to find them at the American Library Association Midwinter meeting in San Diego January 2011

1. Links in San Diego
CrossRef and Holdings Information
Carol Anne Meyer ALA Midwinter
Business Development & Marketing Holdings Update Forum
8 January 2011

3. My Charge
We would like to understand if issue #
and date of coverage are useful or key for
e-journal content access

4. My Response
Yes

5. Thank You!
cmeyer@crossref.org

6. Today’s Agenda
• Why the DOI and CrossRef?
• What is a DOI?
• What does CrossRef do?
• What do I do with a CrossRef DOI when I nd one?
• How do I nd CrossRef DOIs?
• Local Link Resolvers and OpenURL
• CrossRef reports

8. From roadblock…to
Easy, reliable
navigation

9. Broken links are a problem

11. What is a DOI?

12. What is a DOI?
Digital

13. What is a DOI?
Digital
Object

14. What is a DOI?
Digital
Object
Identifier

15. What is a DOI?
Digital
Object
Identifier

16. It serves as a stable link to that
content’s digital location

17. It looks like this:

18. DOI-enabled
linking

19. DOI Syntax

20. DOI Syntax

21. Services

22. Services
• Cross-publisher
reference linking

23. Services
• Cross-publisher
reference linking
• Cross-publisher cited-
by linking

24. Services
• Cross-publisher
reference linking
• Cross-publisher cited-
by linking
• Cross-publisher third
metadata feeds to
parties

25. Services
• Cross-publisher
reference linking
• Cross-publisher cited-
by linking
• Cross-publisher third
metadata feeds to
parties
• Cross-publisher
plagiarism screening
Powered by iThenticate

26. Services
• Cross-publisher
reference linking
• Cross-publisher cited-
by linking
• Cross-publisher third
metadata feeds to
parties
• Cross-publisher
plagiarism screening
Powered by iThenticate
• Cross-publisher
update service

27. 23,356
1,650
Text

28. 3,277 1,650
PUBLISHERS AND SOCIETIES LIBRARY AFFILIATES
23,356
1,650
Text
23,356 141,811
JOURNAL TITLES BOOKS

29. Content beyond
journals…
• Books 6%
6% 1%
• Standards
• Proceedings
• Images
• Figures
• Datasets 87%
• Working papers
• Dissertations Journals
Books
Conference Proceedings
Components

30. Linking 5 Centuries of Content
Century # of DOIs deposited
17th 1,686
18th 4,200
19th 651,584
20th 20,804,031
21st 13,914,241

31. Linking 5 Centuries of Content
Century # of DOIs deposited
17th 1,686
18th 4,200
19th 651,584
20th 20,804,031
21st 13,914,241

32. Linking 5 Centuries of Content
Century # of DOIs deposited
17th 1,686
18th 4,200
19th 651,584
20th 20,804,031
21st 13,914,241
1665

34. has more than
1000 members
• Scientific, Technical, and Medical
• Humanities
• Social Sciences
• Professional

35. is “business-
model neutral”
• Links deliver
the user to the
publisher’s
front door.
Access control
is up to the
publisher.
Photo: Tawheed Manzoor

36. • Represents 56 countries

37. membership
• Commercial publishers
• Academic societies
• Other non-profits
• University presses
• Open access publishers
• Institutional repositories

38. is free for libraries
and end users

39. What do I do with a
CrossRef DOI?
Make it
actionable
in a browser!

40. What do I do with a
CrossRef DOI?
Make it
actionable
in a browser!

42. http://dx.doi.org/10.1006/jmpi.1995.0238

43. Search for it
Publisher Site
Reference to article

44. How do I nd
CrossRef DOIs?
•For People • For Systems
• Simple Text Query • Open URL Lookup
• Guest Query • CrossRef Query
System
• CrossRef Metadata
Search (pilot) • CrossRef Metadata
Service
• Blog Plugin (pilot)
• Firefox Search plug-in
(pilot)

45. Do not attempt to
derive CrossRef
DOIs!
29
Source: alexliivet from Flickr

46. http://www.crossref.org/help/CrossRef_Help.htm

47. Simple-Text Query
• A freely available, easy-to-use
tool to retrieve DOIs.
• A custom version of Inera’s
eXtyles® refXpress parses
unstructured references into
granular, valid XML and returns
any matching DOIs for those
references
• NOT for bulk use for individuals
looking for a DOI
• There is NO programmatic
interface to this service

52. Guest Query
• Also a freely available, easy-to-use tool to
retrieve DOIs.
• A fielded search form where you enter
bibliographic data.

53. http://www.crossref.org/guestquery/

55. CrossRef Metadata
Search
• Also a freely available, easy-to-use tool
to retrieve DOIs
• A pilot project with a simple search
interface
• Retrieval technology is different from
Simple Text Query and Guest Query--
may return different results
• An API is available

58. http://labs.crossref.org/site/crossref_metadata_search.html

61. This service does have an API
www.crossref.org/sigg/sigg/help

62. … MORE

63. Firefox Search Plugin
• Also a freely available, easy-to-use tool to
retrieve DOIs
• A pilot project--not a production tool
• An Open Search tool that allows their browser
search CrossRef Metadata from
users to
search bar.

66. Blog Plugin
• Also a freely available, easy-to-use tool to
retrieve DOIs
• A pilot tool rather than a production service
• Works with WordPress
• A tool for bloggers to look up DOIs in their
authoring environment

67. The formatted and linked citation is
inserted at the cursor position.

68. Open URL Interface
-for systems
• A free service for libraries
• Must register a valid email address to use at
http://www.crossref.org/requestaccount/

69. DOI and OpenURL
• OpenURL is workan alternative to CrossRef and
DOIs – they
not
together
• The DOI system and CrossRef are OpenURL
aware; therefore publishers are OpenURL
enabled via use of CrossRef and DOIs

70. Appropriate Copy Problem
Local
OPAC Aggregator

71. Localized Linking via
DOI Redirection
• Library installs local linking server
• User in library context clicks on a DOI link
• A “cookie” on user’s machine alerts DOIserver server
to redirect this DOI to the local linking
proxy
• Article-level metadata neededthe link orresolution
can come from the source of
for local
from
CrossRef via OpenURL

72. Where is the magic?
Here!
DX.DOI.ORG
OpenURL
Aware
Registering the IP address of your
http://dx.doi.org/ Local Link Server via CrossRef
doi=10.1034/j.
tells the DX resolver to send links
1399-0039.2000.560502.x
back to the LLS and not on to the
http://REGISTERED-ADDRESS/? publisher.
doi=10.1034/j.1399-0039.2000.560502.x
DOI
Metadata
Server

73. CrossRef OpenURL Parameters
Metadata
&aulast
&title
&volume
&issue
&spage
&date
&issn

74. HTTP://www.crossref.org/openurl
http://www.crossref.org/openurl/?
title=Biochemistry
&aulast=Wireman
&volume=13
&spage=1215
&date=1974
&pid=email@address.com

75. OpenURL directs to URL by default

76. http://www.crossref.org/openurl/?
title=Biochemistry
&aulast=Wireman
&volume=13
&spage=1215
&date=1974
&redirect=false
&pid=email@address.com

77. XML Results
returned from
OpenURL query
when
&redirect=false

78. http://www.crossref.org/openurl/?
title=Biochemistry
&aulast=Wireman
&volume=13
&spage=1215
&date=1974
&redirect=false
&format=unixref
&pid=email@address.com

80. OpenURLs also work with
minimal metadata
http://www.crossref.org/openurl/?
&aulast=Wireman
&title=Properties of 30S ribosomal particles
reconstituted from precursor 16S ribonucleic
acid
&redirect=false
&format=unixref
&pid=email@address.com

81. And if you have the DOI
and want the metadata …
http://www.crossref.org/
openurl/?
id=doi:10.1021/bi00703a025
&redirect=false
&format=unixref
&pid=email@address.com

82. CrossRef Query System
-interface for systems

83. CrossRef Query System
-interface for systems
• Can do more than with OpenURL interface.

84. CrossRef Query System
-interface for systems
• Can do more than with OpenURL interface.
–fuzzy) the matching process (fuzzy vs. not-
Control

85. CrossRef Query System
-interface for systems
• Can do more than with OpenURL interface.
–fuzzy) the matching process (fuzzy vs. not-
Control
–Multiple queries in one request

86. CrossRef Query System
-interface for systems
• Can do more than with OpenURL interface.
–fuzzy) the matching process (fuzzy vs. not-
Control
–Multiple queries in one request
–result can not be reduced to one DOI)(when
Allow multiple hits for a single query

87. CrossRef Query System
-interface for systems
• Can do more than with OpenURL interface.
–fuzzy) the matching process (fuzzy vs. not-
Control
–Multiple queries in one request
–result can not be reduced to one DOI)(when
Allow multiple hits for a single query
–OpenURL) in XML (can’t do that with
Build queries

88. CrossRef Query System
-interface for systems
• Can do more than with OpenURL interface.
–fuzzy) the matching process (fuzzy vs. not-
Control
–Multiple queries in one request
–result can not be reduced to one DOI)(when
Allow multiple hits for a single query
–OpenURL) in XML (can’t do that with
Build queries
–receive resultsfilesbulk many queries and
Upload large
in
with

89. CrossRef Query System
-interface for systems
• Can do more than with OpenURL interface.
–fuzzy) the matching process (fuzzy vs. not-
Control
–Multiple queries in one request
–result can not be reduced to one DOI)(when
Allow multiple hits for a single query
–OpenURL) in XML (can’t do that with
Build queries
–receive resultsfilesbulk many queries and
Upload large
in
with
–Uses simple HTTP GET and POST

90. CrossRef Query System
• registered aemail address) account (not just a
Requires proper CrossRef
• No fee for libraries.
See www.crossref.org/help

91. Best Practice for Querying
CrossRef System
• Use Journal Titles rather than ISSNs
See www.crossref.org/help

93. CrossRef Metadata
Services
• Allows a bulk download of CrossRef data
• Accessible by OAI-PMH Interface
• For-fee service

94. Best Practices for
Querying
• Should I use the publication date?
• The Volume?
• The Issue?
71

95. Best Practices for
Querying
• Should I use the publication date?
• The Volume?
• The Issue?
YES!
71

96. The more metadata you
submit, the better your results
• Author first name, last name
• Journal title
• ISSN
• Volume
• Issue
• Page Number
• Publication date 72

97. CrossRef Reports

110. 44 million CrossRef DOIs and Counting--
Almost 40 million DOI Clicks per month
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111. Why Libraries Join
CrossRef

112. Why Libraries Join
CrossRef
• Truly persistent links

113. Why Libraries Join
CrossRef
• Truly persistent links
• Increased usage of library-provided resources

114. Why Libraries Join
CrossRef
• Truly persistent links
• Increased usage of library-provided resources
• Expanded discoverability of content outside
collection

115. Why Libraries Join
CrossRef
• Truly persistent links
• Increased usage of library-provided resources
• Expanded discoverability of content outside
collection
• Linking to the appropriate copy

116. Why Libraries Join
CrossRef
• Truly persistent links
• Increased usage of library-provided resources
• Expanded discoverability of content outside
collection
• Linking to the appropriate copy
• Free DOI and Metadata lookup

117. Thank you!
cmeyer@crossref.org