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Getting started with looking up metadata

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Crossref
Crossref

This 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 on 030818

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Get started: Looking up metadata
funders data clinical trialsgrant #s DOI funders data authors preprint funders grant #s versions preprint funders data clinical trials updates grant #s versions preprint reviews data DOI grant #s versions updates updatesdata data data data data data data citations data data DOI DOI DOI DOI What are you looking for?authors
Citation metadata including… author names, ORCIDs, affiliations, article titles, ISSN, ISBN, pages, issue #, volume #s, dates, DOI
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…
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
Have a DOI? Metadata Search (https://search.crossref.org) REST API (https://api.crossref.org) XML API OpenURL
Getting started with looking up metadata
Getting started with looking up metadata
Getting started with looking up metadata
Getting started with looking up metadata
Getting started with looking up metadata
Getting started with looking up metadata
XML metadata records XML API: http://doi.crossref.org/search/doi? pid=youremail@example.org&format=unixsd&doi=10.1162/1526516017 50079104 OpenURL: https://www.crossref.org/openurl? pid=youremail@example.org&format=unixsd&id=doi: 10.1162/152651601750079104&noredirect=true
Getting started with looking up metadata
Match reference to record / DOI Formatted reference? Metadata Search * REST API * Simple Text Query form XML API OpenURL Metadata fragment Metadata Search REST API XML API (need to mark up, minimum metadata requirements) * need to evaluate
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!
• 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 !)
Getting started with looking up metadata
Simple Text Query
3. Retrieve results
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
What can I ask? • What types of publications is Crossref collecting DOIs for? http://api.crossref.org/works?facet=type- name:*&rows=0
What can I ask? • See how many works have funder information http://api.crossref.org/works?filter=has-funder:true&rows=0
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)
Getting started with looking up metadata
XML API • Match references to DOIs • Free (registration required) • Good for reference linking
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
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
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
Format Content Type CrossRef DataCite mEDRA RDF XML application/rdf+xml Yes Yes Yes RDF Turtle text/turtle Yes Yes Yes Citeproc JSON application/vnd.citationstyles.csl+json Yes Yes Yes Schema.org in JSON-LD application/vnd.schemaorg.ld+json No Yes No Formatted text citation text/x-bibliography Yes Yes Yes RIS application/x-research-info-systems Yes Yes No BibTeX application/x-bibtex Yes Yes Yes CrossRef Unixref XML application/vnd.crossref.unixref+xml Yes No No DataCite XML application/vnd.datacite.datacite+xml No Yes No ONIX for DOI application/vnd.medra.onixdoi+xml No No Yes Content negotiation (http://citation.crosscite.org/cn) Retrieve metadata records from Crossref, DataCite, and mEDRA
I want everything • Metadata Plus (OAI-PMH and REST API) • OAI-PMH deposit harvester (for members)
Questions? support@crossref.org http://support.crossref.org

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Getting started with looking up metadata

  • 3. Citation metadata including… author names, ORCIDs, affiliations, article titles, ISSN, ISBN, pages, issue #, volume #s, dates, DOI
  • 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 (https://api.crossref.org) XML API OpenURL
  • 13. XML metadata records XML API: http://doi.crossref.org/search/doi? [email protected]&format=unixsd&doi=10.1162/1526516017 50079104 OpenURL: https://www.crossref.org/openurl? [email protected]&format=unixsd&id=doi: 10.1162/152651601750079104&noredirect=true
  • 15. Match reference to record / DOI Formatted reference? Metadata Search * REST API * Simple Text Query form XML API OpenURL Metadata fragment Metadata Search REST API XML API (need to mark up, minimum metadata requirements) * need to evaluate
  • 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. • 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 !)
  • 21. 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
  • 22. What can I ask? • What types of publications is Crossref collecting DOIs for? http://api.crossref.org/works?facet=type- name:*&rows=0
  • 23. What can I ask? • See how many works have funder information http://api.crossref.org/works?filter=has-funder:true&rows=0
  • 24. 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)
  • 26. XML API • Match references to DOIs • Free (registration required) • Good for reference linking
  • 27. 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
  • 28. 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
  • 29. 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
  • 30. Format Content Type CrossRef DataCite mEDRA RDF XML application/rdf+xml Yes Yes Yes RDF Turtle text/turtle Yes Yes Yes Citeproc JSON application/vnd.citationstyles.csl+json Yes Yes Yes Schema.org in JSON-LD application/vnd.schemaorg.ld+json No Yes No Formatted text citation text/x-bibliography Yes Yes Yes RIS application/x-research-info-systems Yes Yes No BibTeX application/x-bibtex Yes Yes Yes CrossRef Unixref XML application/vnd.crossref.unixref+xml Yes No No DataCite XML application/vnd.datacite.datacite+xml No Yes No ONIX for DOI application/vnd.medra.onixdoi+xml No No Yes Content negotiation (http://citation.crosscite.org/cn) Retrieve metadata records from Crossref, DataCite, and mEDRA
  • 31. I want everything • Metadata Plus (OAI-PMH and REST API) • OAI-PMH deposit harvester (for members)