Results from the International Linked Data Survey for Implementers

[Richard Wallis]

On behalf of OCLC Research:

Many thanks to all of you who participated in the international linked data survey for implementers or disseminated the survey link! I’ve been summarizing the results in a series of HangingTogether posts, which just concluded today:

 

·        Linked Data Survey results 1 – Who’s doing it

• Linked Data Survey results 2 – Examples in production
• Linked Data Survey results 3 – Why and what institutions are consuming
• Linked Data Survey results 4 – Why and what institutions are publishing
• Linked Data Survey results 5 – Technical details

·        Linked Data Survey results 6 - Advice from the implementers

 

At the end of the last post is a link to the spreadsheet with the compilation of all survey responses (minus the contact information which we promised respondents we’d keep confidential). Feel free to apply your own filters to the responses, or look at them more closely.

 

We also updated OCLC Linked Data Research activity page to include the link to the above spreadsheet and the hangingtogether blog series (the sixth one to be added soon) so they’re all in one place.

 

I’d be interested in your reactions!

 

Cheers,

 

Karen S-Y

[Richard Wallis]

On behalf of Karen at OCLC Research:

[Jon Voss]

Thanks for sharing this Richard (and Karen), it's amazing work. And I really appreciate that you've shared your analysis as well as the raw responses.  It's *hugely* helpful in getting a broader understanding of the community (at least the library subset) innovating in this space.

I think we've got a lot of work to do yet on the Open part of Linked Open Data, which to me is a critical part of growing a sustainable ecosystem of open knowledge.  There's been a lot of progress, and I'd say the pendulum is swinging toward Open, with the five largest datasets clearly utilizing open licenses. But it gets pretty muddy after that.  This is why I think we have to keep pushing for Linked Open Data, and continue to support ongoing discussions, development of legal/policy tools, and reinforcing rewards for utilizing open licenses.

I've taken the liberty of rewriting Karen's table in part 4 with the largest linked datasets, just adding in a couple of columns related to licensing.

Jon

The largest linked data datasets reporting in descending order, with licensing:

Project/Service	Source	Size	License	Open?
WorldCat.org	OCLC	15 billion triples	e) CCO 1.0 Universal	Yes
WorldCat.org Works	OCLC	5 billion triples	e) CCO 1.0 Universal	Yes
Europeana	Europeana Foundation	3,798,446,742 triples for the pilot LOD service	e) CCO 1.0 Universal	Yes
The European Library	The European Library	2,131,947,229 triples	e) CCO 1.0 Universal	Yes
Linked Open Data	Research Libraries UK	936,054,853 triples	a) We don’t announce any explicit license.	No
Opendata	Charles University in Prague	750 million triples	Other (please specify) The license is based on French State Open License; the linked dataset has not yet been released	No
Semantic Web Collection	British Museum	100-500 million triples	Other (please specify) Open Data licence	Yes?
Drug Encyclopedia	Charles University in Prague	100-500 million triples	e) CCO 1.0 Universal	Yes
Cedar project	DANS	100-500 million triples	Other (please specify) TBD	Not Yet
id.loc.gov	Library of Congress	100-500 million triples	a) We don’t announce any explicit license.	No?
British National Bibliography	British Library	50-100 million triples	Other (please specify) Open as possible, but also dealing with research project data and enrichment.	No?
British Art collection	Yale Center for British Art	57 million triples	Other (please specify) see http://britishart.yale.edu/open-data-and-data-services-terms-use	Yes?

Licenses: 16 projects/services do not announce any explicit license. Of the ones that do, CC0 1.0 Universal is the most common (15), followed by Public Domain Dedication and License or PPDL (7).  A few apply Open Data Commons Attribution (ODC-BY), Open Data Commons Open Database License (ODC-ODbl) or ODC-ShareAlike Community Norms. Other licenses mentioned: ODC-BY-SA (Attribution-ShareAlike), but considering ODC-BY; Creative Commons Attribution-NonCommercial-NoDerivatives (BY-NC-ND); French State Open License-based; and a link to a specific set of data services terms.

Jon Voss
Historypin Strategic Partnerships Director
ph. 415-935-4701

-------------------------------------------

We Are What We Do 
London | San Francisco

[Owen Stephens]

Hi Jon,

Agree about licensing completely, but just wanted to correct the RLUK line (5th line) - this is released under a CC0 license (this is correct in the spreadsheet)

Perhaps also worth noting though that this (afaik) part of the TEL release so essentially line 5 is a subset of line 4 I think

Owen

[Jon Voss]

Thanks Owen!

I totally screwed up my table.  Here it is corrected.

Jon

Project/Service

Source

Size

License

Open?

WorldCat.org

OCLC

15 billion triples

ODC-BY	~Yes

WorldCat.org Works

OCLC

5 billion triples

ODC-BY	~Yes

Europeana

Europeana Foundation

3,798,446,742 triples for the pilot LOD service

CC0 1.0 Universal	Yes

The European Library

The European Library

2,131,947,229 triples

CC0 1.0 Universal	Yes

Linked Open Data

Research Libraries UK

936,054,853 triples

CC0 1.0 Universal

Yes

Opendata

Charles University in Prague

750 million triples

a) We don’t announce any explicit license.

No

Semantic Web Collection

British Museum

100-500 million triples

Other (please specify) Open Data licence (no assertion on the website)	~Yes?

Drug Encyclopedia

Charles University in Prague

100-500 million triples

a) We don’t announce any explicit license.

No

Cedar project

DANS

100-500 million triples

a) We don’t announce any explicit license.

No

id.loc.gov

Library of Congress

100-500 million triples

b) Public Domain Dedication and License (PDDL)	Yes

British National Bibliography

British Library

50-100 million triples

CC0 1.0 Universal	Yes

British Art collection

Yale Center for British Art

57 million triples

Other (please specify) see http://britishart.yale.edu/open-data-and-data-services-terms-use

~Yes?

Jon Voss
Historypin Strategic Partnerships Director
ph. 415-935-4701

-------------------------------------------

We Are What We Do 
London | San Francisco

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