- From: Kingsley Idehen <kidehen@openlinksw.com>
- Date: Wed, 01 Aug 2012 08:27:06 -0400
- To: public-lod@w3.org
- Message-ID: <5019209A.3040904@openlinksw.com>
On 8/1/12 6:19 AM, Christophe Guéret wrote: > Hi all, > > That may or may not really fit into the discussion, but here is a > small write up about the commercial benefits of doing 5 star data > instead of 3: > http://wp.me/p1ffiZ-7D > > It is not a new idea but some data owners I spoke with did not see it > that way, thinking that Linked Open Data implies giving away all the > data for free. > This post relates what I explained to them, hope this makes sense. And > if it doesn't, I'd be pleased to discuss it :-) > > Cheers, > Christophe > > -- > Christophe Guéret Ph.D. (c.d.m.gueret@vu.nl <mailto:c.d.m.gueret@vu.nl>) > http://www.few.vu.nl/~cgueret/ <http://www.few.vu.nl/%7Ecgueret/> > http://semweb4u.wordpress.com/ > Postdoctoral researcher working on LATC (http://latc-project.eu) > Knowledge Representation & Reasoning Group > Computational Intelligence Group > Department of Computer Science, AI > VU University Amsterdam > You share great insights in your post re., fundamental misconceptions about publishing Linked Data, and the presumption that its must be free as in $0.00 versus free-flowing via incorporation of standards into the art of data representation and publication -- across public and/or private networks. Let me extend the theme of your post a little, via a simple business model breakdown aimed at publishers of Linked Data. Specifically, outlining a simple business model for Linked Open Data publishers in general. Business Model Basics: 1. identify pain 2. craft a solution 3. unitize solution 4. monetize units 5. market solution 6. sell solution -- usage terms enforcement has to be part of the solution. I've always seen Linked (Open) Data as being the equivalent of DNS for data objects. Like many, I've also presumed that the InterWeb is a super information highway; thus, toll booths are a simple metaphor for the most basic business model. Digital Toll Booths: In the U.S. (and I presume other countries) you have two options at a tool booth, you pay cash on the spot or prepay via "easy passes" that enable you drive past toll booths without stoppage etc. *Quick WebID Primer:* A WebID is a cryptographically verifiable de-referencable (5-star Linked Data) URI that denotes an agent (human, organization, or machine). The WebID authentication protocol is what facilitates verification by looking up structured profile oriented data, analyzing relationships that have specific semantics combined with existing and widely deployed PKI infrastructure i.e., dominant Web user agents are already endowed with all the functionality required for functional Web-scale PKI, hence the existence eCommerce on the Web etc.. Once you establish a verifiable identification mechanism (that is itself an application of Linked Data) you can then use access control lists as the basis for sophisticated data consumption policies. The sophistication of these policies are only constrained by the boundaries of the imagination of the data publisher. For instance, you can have data access policies driven by social relationship semantics that enforces constraints such as: 1. access is only granted WebIDs that resolve to profile data bearing claims about knowing TimBL via foaf:knows predicate 2. ditto but extending this to any WebID that's <= 1 degree of separation from TimBL via foaf:knows predicate navigation 3. using certificate attributes (predicates in an X.509 graph) to determine data access. Basically, the only constraint is our imagination since SPARQL ASK offers an extremely powerful mechanism for what's outlined above. Beyond Data DNS, you also have Data GPS where access to data that aids reasoning (the GPS part) is constrained by ACLs, These ACLs enable consumers to navigate Linked Data graphs (data highways) with varying degrees of sophistication which ultimately affects productivity and agility. *Conclusion* Verifiable Identity is a critical component of any viable Web-scale Linked Open Data publishing endeavor. Coarse-grained Web 2.0 API keys don't cut it since they are silo vectors across two dimensions: identity verification and data access policy (authorization) granularity. The great thing about WebID is that its all about URIs, Linked Data, and REST. Basically, its pure AWWW (Architecture of the World Wide Web) DNA. Links: 1. http://blog.twitter.com/2012/07/our-approach-to-trust-safety-and.html-- complete post 2. http://bit.ly/PjOypK-- collection of posts about WebID and Web-scale verifiable digital identity 3. http://www.w3.org/wiki/WebID-- WebID Portal 4. https://plus.google.com/s/webid%20acls%20idehen -- collection of G+ hosted posts covering WebID ACLs 5. http://slidesha.re/PrsQRg -- circa. 2009 presentation titled: Solving Real Problem Using Linked Data. -- Regards, Kingsley Idehen Founder & CEO OpenLink Software Company Web: http://www.openlinksw.com Personal Weblog: http://www.openlinksw.com/blog/~kidehen Twitter/Identi.ca handle: @kidehen Google+ Profile: https://plus.google.com/112399767740508618350/about LinkedIn Profile: http://www.linkedin.com/in/kidehen
Attachments
- application/pkcs7-signature attachment: S/MIME Cryptographic Signature
Received on Wednesday, 1 August 2012 12:26:15 UTC