This 20-minute webinar will give a top-level overview of the resources we offer for looking up metadata and for matching DOIs to citations. We'll cover tools and APIs for retrieving metadata records, as well as what metadata is available. Webinar held April 27, 2017

1. Get started:
Looking up
metadata
Patricia Feeney
Product Support Manager
@CrossrefSupport

2. funders
data
clinical
trialsgrant
#s
versions
DOI
funders
data
updates
DOI
preprint
funders
data
grant
#s
versions
preprint
funders
data
clinical
trials
updates
grant
#s
versions
preprint
funders
data
DOI
updates
grant
#s
versions
updates
updates
updates
data
data
data
data
data
data
data
data
data
datadata
updates
DOI
DOI
DOI
DOI

3. metadata
including…
author names, ORCIDs, affiliations, article titles,
ISSN, ISBN, pages, issue #, volume #s, dates,
identifiers

4. more metadata
reference lists, funding data, ORCIDs, license
data, clinical trial numbers, errata, retractions,
updates and more through our Crossmark
service, JATS-formatted abstracts, relationships
between items…

5. What do you want to do?
• Look up metadata for a DOI
• Match a reference / metadata to a DOI
• Look up / retrieve metadata based on defined
criteria
• Get everything

6. Have a DOI?
Metadata Search ( https://search.crossref.org )
REST API
XML API
OpenURL

13. XML metadata records!
XML API:
http://doi.crossref.org/search/doi?
pid=youremail@example.org&format=unixsd&doi=10.1162/152651
601750079104
OpenURL:
https://www.crossref.org/openurl?
pid=youremail@example.org&format=unixsd&id=doi:
10.1162/152651601750079104&noredirect=true

14. Registered metadata
DOI
Crossref-generated
metadata

15. Match reference to record/DOI!
Metadata?
Exact match:
- XML API (need to mark up)
Needs evaluation:
- Metadata Search
- REST API
Formatted reference?
Exact match:
- Simple Text Query form
- XML API (some limitations)
Needs evaluation:
- Metadata Search
- REST API

16. Needs evaluation:!
- not always exact !
- will return approximate results!
- will also return other stuff !
Good for: !
finding approximate results, working with
messy data, evaluating matches on your own!
Exact:!
- field-by-field match!
- match or no match at all!
Good for: !
auto-populating lists of references!

17. Simple Text Query form!

19. XML API!
• Match references to DOIs
• Login required but most
queries are free
• Good for reference linking
HTTPS

20. XML API!
<query key="CR3" enable-multiple-hits="false"
forward-match="true” secondary-query="author-title">
<journal_title>Antiquity</journal_title>
<author search-all-authors="true">Anderson</
author>
<volume>87</volume>
<issue>337</issue>
<first_page>879</first_page>
<year>2013</year>
</query>
more info: https://support.crossref.org/hc/en-us/sections/202815006

21. XML API!
<query enable-multiple-hits="false" key="key1">
<article_title match="fuzzy">Concluding remarks</
article_title>
<author search-all-authors="true">Somiari</
author>
</query>
Author / title query

22. XML API!
<query key="q1" enable-multiple-hits="true">
<unstructured_citation>Hungate, B. A., &amp;
Hampton, H. M. (2012). Ecosystem services: Valuing
ecosystems for climate. Nature Climate Change, 2(3),
151-152.</unstructured_citation>
</query>
Unstructured citation

23. OpenURL!
• Match metadata to DOIs
• Free but login required
https://doi.crossref.org/openurl?
issn=03770273&aulast=Walker&volume=54&spage=117&date=1983&redirect=fa
lse&pid=username:password

24. • Search by title fragment, author name
• Find works related to an ORCID
• Search by ISSN
• Search by grant / award number
• Include / exclude terms (using + and !)

26. REST API!
• Search, filter, facet, and sample Crossref metadata
• No login, no fee
• Do whatever you want with the metadata:
• Search
• Report on funding, publishing, author activities
• Ingest scholarly metadata
• Locate full text for content mining

27. All records for a prefix:
http://api.crossref.org/prefixes/10.xxxx/works
All records with funder information:
http://api.crossref.org/prefixes/10.xxxx/works?filter=has-funder-doi:true&rows=0
All records for a prefix with funder information:
http://api.crossref.org/prefixes/10.xxxx/works?filter=has-funder-doi:true
All records with a given funder published in 2017:
http://api.crossref.org/works?filter=is-update:true,from-pub-date:2017-01-01,funder:
10.13039/100000001,funder:10.13039/100000050
All records with ORCIDs:
https://api.crossref.org/works?filter=has-orcid:true
All records containing a given term:
http://api.crossref.org/works?query=quokka
REST API (https://api.crossref.org)

28. I want everything!
OAI-PMH
• Deposit harvester (for members)
• Enhanced CMS (subscription service)

29. Questions?
support@crossref.org
@CrossrefSupport