1. Technical working group report 2011 1st Dec 2011 Ed Zukowski The British Library

2. Technical infrastructure: focus on metadata 3. What happened since Dec 2010?

Major service releases in 2011

March Metadata Store (MDS) public beta

June MDS v2 (production release)

June Metadata Search beta

July OAI beta

September Content Negotiation alpha

4. Whats the Metadata Store (MDS)? mds.datacite.org 5. Usage scenarios

Let your data centres use MDS directly (recommended) - e.g. BL and TIB

Integrate your local solution with MDS (if you have one). e.g. CDL and CISTI

6. MDS user interface UI also available in German and French 7. Statistics: our DOIs

Number of DOIs

Total (in Handle) 1,144,354

In MDS 52,497

With metadata 47,350

Number of active data centres in MDS:~50

Top 5 data centres (by number of DOIs in MDS):

CDL.CDL17,387

BL.ADS11,846

TIB.PANGAEA6,429

BL.UKDA4,962

ZBMED.GMS2,986

November 2011 8. DOI resolutions in dx.doi.org in 2011

Total number of DOIs resolutions in 2011:

~660,000

Number of resolutions in top 200 DOIs:

from 2000 to 100 per DOI

9. Metadata Store usage 10. Metadata Schema Repository

http://schema.datacite.org

Metadata: XSD & examples are validated by Jenkins, all version managed with the source code

11. Other metadata services

search.datacite.org

Public, simple but flexible, drill down

UI and API

Best looking piece of our software check it out!

oai.datacite.org

Open Archive Interface provider

data.datacite.org

Content negotiation (Metadata Resolver)

Metadata in many formats (e.g. RDF)

12. search.datacite.org 13. search.datacite.org usage Getting popular.... ... all over the wold! 14. Metadata resolver

Available at:data.datacite.org

Purpose:make our metadata available in various formats

Two modes of usage:

HTML links

HTTP content negotiation

15. Metadata resolver: Content negotiation

CrossRef launched their conneg Apr 2011

the beauty of the setup is that from now on, any DOI registration agency can enable content negotiation for their constituencies as well. DataCite we're looking at you ;-) (Geoffrey Bilder on CrossTech blog, April 2011)

So how does it work? Make a resolution request withdx.doi.organd specify required format in HTTP Accept header.

16. Our implementation was well received

In April CrossRef launched content negotiation support for its DOIs. At the time I cheekily called-out DataCite to start supporting content negotiation as well.

Edward Zukowski (DataCite's resident propellor-head) took up the challenge with gusto and, as of September 22nd DataCite has also been supporting content negotiation for its DOIs. This means that one million more DOIs are now linked-data friendly.

Congratulations to Ed and the rest of the team at DataCite.

(Geoffrey Bilder on CrossTech blog, Sep 2011)

17. Metadata resolver: links 18. Infrastructure

Amazon Cloud

Cost