CrossRef Workshop on Good Practice PublishingVilnius, Lithuania June 2015

CrossRefMultiple resolution

When content appears on multiple pagesPlus

Metadata servicesText and data mining 1

The problem

• A document may exist on two websites– Or more …

• A reader may wish to visit different sites– One reader prefers site A– One reader prefers site B

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For example

• You stop publishing …– Your content only exists on library/archive sites

• Your content is on your university site …– And on an aggregator (e.g. EBSCO)– Or on a publisher site (e.g. Wiley)

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The solution:CrossRef Multiple Resolution

• The DOI does not go directly to an article URL• The DOI goes to an interim (“pop-up”) page • This page links to more than one instance of the

content

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CrossRef Multiple Resolution

Link 1

Link 2

Link 3DOI link

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How does it work?

• One primary depositor– Deposits the metadata– Indicates the the DOI is multiple-resolution ready

(=unlocked)

• One (or more) secondary depositor(s)– Cannot update metadata– Can add URLs– Require a multiple resolution deposit account

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Implementation (1)

• Primary depositor– Makes agreements with secondary depositors– Tells CrossRef– Creates interim webpage template with CrossRef

• For the item (=article), or the entire prefix

– Deposits XML metadata including an ‘unlock’ flag• Updates XML as needed

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Implementation (2)

• Secondary depositor– Creates secondary deposit XML– Deposits metadata with CrossRef

• Updates XML as needed

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Example CrossRef Multiple

Resolution page

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• http://dx.doi.org/10.1177/152216280100400122• One DOI, 4 URLs, 3 depositors:• http://www.portico.org/Portico/article?article=pd3q

w16ws• http://triggered.stanford.clockss.org/ServeContent?r

ft_id=info:doi/10.1177/152216280100400122• http://triggered.edina.clockss.org/ServeContent?rft_

id=info:doi/10.1177/152216280100400122• http://resolver.kb.nl/resolve?urn=urn:nbn:nl-

kb:edepot:ewtij:1228472125213

Metadata

Prime link

Reason for multiple resolution

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• http://dx.doi.org/10.1177/152216280100400122• One DOI, 4 URLs, 3 depositors:• http://www.portico.org/Portico/article?article=pd3q

w16ws• http://triggered.stanford.clockss.org/ServeContent?r

ft_id=info:doi/10.1177/152216280100400122• http://triggered.edina.clockss.org/ServeContent?rft_

id=info:doi/10.1177/152216280100400122• http://resolver.kb.nl/resolve?urn=urn:nbn:nl-

kb:edepot:ewtij:1228472125213

Prime link Other sites/links 11

CrossRef Multiple Resolution http://help.crossref.org/multiple-

resolution-overview

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Multiple language articles?

• Articles in different languages …• … should have different DOIs

DOI 1 DOI 2

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Why use different DOIs?

• Translations may not be exactly the same– Translations may introduce (or correct) errors– Translations may use different terminology– Authors may update the later version

• A change to one (requiring updated metadata)– May not be required for the other article

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Multiple language exceptions

• Multiple language article on same site• Linked by same “landing” page

Publisher’s websiteLanguage 1

Language 2

DOI link

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Multiple Resolution for books

• E-books often have multiple web locations– Publisher’s website– Amazon– EBSCO– Etc., etc., etc.

• The workflow changes– Don’t always know who is “primary” depositor

• Every book is different

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CrossRef is testing Multiple Resolution for books

• We are currently testing a system for books– Book publisher specifies a group of all organizations

allowed to deposit metadata and assign CrossRef DOIs (“co-access group”)

– Any member of the group can create a CrossRef DOI at any time

– CrossRef automatically creates the interim “pop-up” page when additional record is added

– CrossRef aliases different DOIs for the same content so they act the same

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Who can use CrossRef Multiple Resolution?

• All members of CrossRef for any content– No additional charge for CrossRef Multiple Resolution– Primary and secondary depositors will each pay the per-

DOI fee

• Members may discontinue CrossRef Multiple Resolution if it is no longer necessary

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OTHER SERVICES FROM CROSSREF:METADATA

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The problem

• Many discovery services rely on bibliographic metadata from publishers

• An increasing number of services are using citation analysis

• Publishers have different, non-standard formats• It is difficult to locate metadata for book chapters• Publishers have an interest in increasing the

discoverability of their content

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The solution

• CrossRef metadata is available for thousands of publishers and millions of scholarly documents in the same XML format

• CrossRef metadata is also available for many of these publishers’ references

• CrossRef has metadata for 8 million book chapters• CrossRef Metadata Services provides this data and a

license to reuse it

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CrossRef Metadata Services recipients

• Can locally host CrossRef metadata (including many references)

• Can use CrossRef metadata for citation analysis

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CrossRef Metadata Services Who is it for?

• Organizations that want to supplement metadata from other sources

• Organizations providing citation metrics• Document delivery providers• Discovery services• Search engines• Content aggregators

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Additional information

• CrossRef member publishers may opt out of providing data to any CMS Affiliate

• Opt-outs may include just article metadata or may include references deposited for Cited-by linking

• Enhanced CrossRef Metadata Services is the only CrossRef program that provides reference data

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CrossRef Metadata Services opt-out

• To make sure CrossRef Affiliates receive your references, make sure not to opt-out of references

• (By default you are opted-in)

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Organizations usingCrossRef Metadata Services

• Academic Analytics, LLC• Academic Medical Center• Airiti, Inc.• Altmetric, LLC• American Chemical Society (ACS)• Cambia• Colwiz Limited• Copyright Clearance Center, Inc. (CCC)• DeepDyve, Inc.• EasyBib.com (ImagineEasy Solutions)• Elsevier, Inc.• EMBL-EBI• Ex Libris Ltd.• Global Digital Central• Hindawi Publishing Corporation• Instytut Bioinfobank Sp. z o.o.• Labtiva, Inc.• mapegy GmbH• MESUR• NASA ADS

• OCLC• Ontario Council of University Libraries (OCUL)• PhilPapers Foundation• Plum Analytics• ProQuest Information & Learning• PTFS Europe• Reprints Desk• Research Square• ScholarMate, Ltd.• Science-Metrix• Sciencescape, Inc.• Sunmedia• Suweco, CZ• Symplectic, Ltd.• Talis Education Limited• Technical Information Center of Denmark (DTU Library)• The Korean Federation of Science and Technology Societies• Third Iron• UberResearch

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OTHER SERVICES FROM CROSSREF: TEXT AND DATA MINING SERVICES

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What is Text and Data Mining (TDM)

• Using computer programs (robots) to investigate online data/publications/websites– Done by machine, not by humans!– The results are then investigated by humans

• Example– Analysis of mortality in Canadian hospitals found you were

more likely to die at weekends than during the week!

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What is the problem?

• Publishers all have their own rules governing what researchers may do with their content– Some allow text and data mining, some do not– Some only allow limited access, others allow full access– Some restrict the amount of data available for download,

some only allow access on their sites and no sequential downloading of content

• Note: Europe is adopting laws that say publishers must allow TDM (to authorized users)

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Even if publishers allow TDM …

It takes researchers a lot of time to find and understand what they are allowed to do

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The solution: CrossRef Text and Data Mining Services

• Publishers register with CrossRef– Full text (metadata, DOIs)– The website of their license agreement (that says what

researchers can and cannot do)

• Researchers use CrossRef API to easily access the licenses from multiple publishers

• Researchers use CrossRef DOIs to access the content they want

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Who can use CrossRef Text and Data Mining Services?

• All members– There is no additional charge – You must have relevant license information on your

website

• Any researcher

• Find out more– www.crossref.org/tdm

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