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1 Linked Data Platform Working Group

Mission: produce a W3C Recommendation for HTTP-based (RESTful) application integration patterns using read/write Linked Data. (See Charter)

1.1 Status

The WG has been officially approved by the W3C and the call for participation marked the official launch of the WG. The WG is now active and has weekly calls. The First Public Working Draft is out for review. See below for additional info.

1.2 Deliverables

1.3 LDP Workshop

The Linked Data Platform WG is pleased to announce a special open meeting in San Francisco on April 21 hosted jointly with the Annotations WG which has meetings on the following days. See iAnnotate and Annotations WG f2f Anyone with an interest in Linked Data is urged to attend. This is important.

Please indicate below whether you will be able to attend the workshop.

  • GOALS:

The purpose of this meeting is to discuss potential future work for the WG. The deliverable from the workshop will be a report that the LDP WG will take into consideration as it plans its way forward.

The LDP spec has just been published as a W3C Recommendation. The Paging spec and the LDP Patch spec are Candidate Recommendations. The WG has other, non-essential, deliverables in various stages of completion. See WG Deliverables for details.

Clearly, the Paging spec and the Patch spec need to be completed and moved to Rec. But a more important question is what else needs to be done to advance Linked Data as a central Web technology.


Short, say, 15 minute presentations followed by open discussion. Please send presentation proposals to Public LDP Mailing List by April 1, 2015.


The Fort Mason campus of the City College of San Francisco.

Room C260

The Fort Mason campus is close to SFO. There are a number of airport hotels close by that attendees can stay at.


10AM to 5PM on April 21.

    • Will attend:
      • Ashok Malhotra and 2 Oracle developers
      • David Wood
  • Regrets:

1.4 Ongoing Work

Tools used by the group :

Non deliverable Documents being maintained :

Miscellaneous (old) documents:

1.5 Participation

See list of current participants, (or with contact info), early introductions, wiki user pages, nicknames.

If you want to join this group, see How to Join.

If you are officially in the group, you will automatically receive group email and your login and password will work on this wiki.

We currently use three mailing lists as follows: 
Dedicated to WG discussions. Non WG members can subscribe but cannot post. See public-ldp-wg archive. 
Open to all, used for public discussion. See public-ldp archive. 
Open to all, used to gather comments (not discussions) from the public on published documents. See public-ldp-comments archive.

1.6 Meetings

Teleconferences (official participants and invited guests only):

  • Every Monday, at 10am US Eastern (Boston) time for 60 minutes (back to normal duration since we reached 2nd LC), 16:00 Paris/Berlin/A'dam, 15:00 London (see time converter for additional timezones)
  • Dial +1-617-761-6200 or then conference code LDPWG (53794) followed by #
  • IRC channel: #ldp (IRC is connected to issue tracker via the IRC Trackbot)
  • An agenda is sent 24 hours in advance; minutes follow within a day or two.
  • Scribes list - who's next? If it's you, you may want to check Scribe 101 and Common Scribe Manual

1.6.1 Next Meeting

  • Teleconference 2015.03.02 Agenda

1.6.2 Future Meetings

  • Teleconference 2015.03.09 Agenda

1.6.3 Past Meetings

1.7 Timeline

  • 2012.05.09 WG officially approved/announced
  • 2012.06.18 WG first teleconf
  • Publication schedule for LDBP editor's draft and FPWD:
    • 2012.09.24: first editor's draft available for review by the working group; the working group has two weeks to raise issues.
    • 2012.10.08: deadline for reviews and raising issues as input for the editors; the editors have two weeks to annotate the draft with these issues.
    • 2012.10.22: publication of FPWD
    • 2012.11.01: F2F1 at TPAC; addressing open issues in the FPWD, working towards a more complete version
    • beginning of 2013: second public working drafts should be published
  • Publication schedule for UCR editor's draft and FPWD:
    • 2012.10.29: first editor's draft available for review by the working group
  • beyond, see: charter version.

1.8 Linked Data Platform (LDP) vs SPARQL Graph Store HTTP Protocol (GSP)

From the start GSP was identified as a specification LDP overlaps with. The Working Group therefore had a look at how GSP and the Linked Data Basic Profile submission compare and discussed what ought to be done.

The WG concluded that the two specifications aren't very different but because they have different goals they cannot be fully reconciled. As of September 2012, LDP was merely an Editor's draft while GSP was in Last Call with a WG ready to disband so, there was basically no way GSP could be modified in any significant way to align with LDP. If any alignment was possible it ought be done on the LDP side.

Based on this, the LDP WG decided on its September 17th, 2012 call that it will seek to align LDP to GSP as much as possible.

See email thread and minutes for further details.

Subsequently, on behalf of the WG, Miel Vander Sande conducted a thorough review of how the two specifications compare. The results were captured in the document: Linked Data Platform (LDP) vs SPARQL Graph Store HTTP Protocol (GSP)

1.9 W3C Working Group Resources

1.10 Patent Policy

This Working Group operates under the W3C Patent Policy (5 February 2004 Version). To promote the widest adoption of Web standards, W3C seeks to issue Recommendations that can be implemented, according to this policy, on a Royalty-Free basis.

For more information about disclosure obligations for this group, please see the W3C Patent Policy Status Page.

1.11 Staff

Email the chairs and staff contacts at