LAWDI - Rogue Linked Data
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This document discusses using GitHub Pages to publish linked data on the web with no tools, support, money or other resources needed. It notes some limitations like only supporting static files and GET requests. It provides examples of publishing RDF and HTML files with RDFa from GitHub Pages and notes concerns about stable URLs if GitHub were to go away. The overall message is that GitHub Pages allows starting to mint HTTP URIs for data with no support in order to get RDF representations of data out where people and machines can discover and use it.
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LAWDI - Rogue Linked Data
- 1. Rogue Linked Data ☠ Ryan Baumann
- 2. • No tools • No institutional support • No money • No problem
- 3. GitHub
- 9. Content Type $ curl -I https://raw.github.com/paregorios/lawdi-geo/ master/irt264.ttl HTTP/1.1 200 OK Server: nginx/1.0.13 Date: Fri, 01 Jun 2012 15:39:38 GMT Content-Type: text/plain; charset=utf-8 Connection: keep-alive Status: 200 OK X-RateLimit-Limit: 100 X-Frame-Options: deny X-RateLimit-Remaining: 100 X-Runtime: 14 Content-Length: 1 Cache-Control: no-cache
- 17. HTML + RDFa goes here
- 18. Problems • Static files only • No verbs other than GET • Very little server control • No 303 redirects • No content negotiation • Content type
- 19. Content Type $ curl -I http://ryanfb.github.com/gh-pages-test/test HTTP/1.1 200 OK Server: nginx/1.0.13 Date: Fri, 01 Jun 2012 15:36:35 GMT Content-Type: application/octet-stream Content-Length: 3624 Last-Modified: Fri, 01 Jun 2012 15:36:22 GMT Connection: keep-alive Expires: Sat, 02 Jun 2012 15:36:35 GMT Cache-Control: max-age=86400 Accept-Ranges: bytes
- 20. Content Type $ curl -I http://ryanfb.github.com/gh-pages-test/folder-test/ HTTP/1.1 200 OK Server: nginx/1.0.13 Date: Sat, 02 Jun 2012 13:17:24 GMT Content-Type: text/html Content-Length: 3810 Last-Modified: Sat, 02 Jun 2012 13:16:54 GMT Connection: keep-alive Expires: Sun, 03 Jun 2012 13:17:24 GMT Cache-Control: max-age=86400 Accept-Ranges: bytes
- 21. Content Type $ curl -I http://ryanfb.github.com/loebolus/ HTTP/1.1 200 OK Server: nginx/1.0.13 Date: Fri, 01 Jun 2012 17:31:48 GMT Content-Type: text/html Content-Length: 46246 Last-Modified: Thu, 31 May 2012 17:09:11 GMT Connection: keep-alive Expires: Sat, 02 Jun 2012 17:31:48 GMT Cache-Control: max-age=86400 Accept-Ranges: bytes
- 22. Content Type $ curl -s http://ryanfb.github.com/loebolus/ | head <!DOCTYPE html> <html lang='en'> <head> <meta charset='utf-8'> <title>Loebolus</title> <link href='index.rdf' rel='alternate' type='application/rdf+xml'> <link href='http://fonts.googleapis.com/css?family=EB +Garamond' rel='stylesheet' type='text/css'> <style> /*<![CDATA[*/ body {
- 23. Content Type $ curl -I http://ryanfb.github.com/loebolus/index.rdf HTTP/1.1 200 OK Server: nginx/1.0.13 Date: Fri, 01 Jun 2012 17:29:21 GMT Content-Type: application/rdf+xml Content-Length: 19136 Last-Modified: Thu, 31 May 2012 17:09:10 GMT Connection: keep-alive Expires: Sat, 02 Jun 2012 17:29:21 GMT Cache-Control: max-age=86400 Accept-Ranges: bytes
- 24. Content Type $ curl -I http://ryanfb.github.com/gh-pages-test/ irt264.ttl HTTP/1.1 200 OK Server: nginx/1.0.13 Date: Fri, 01 Jun 2012 15:36:35 GMT Content-Type: application/octet-stream Content-Length: 3624 Last-Modified: Fri, 01 Jun 2012 15:36:22 GMT Connection: keep-alive Expires: Sat, 02 Jun 2012 15:36:35 GMT Cache-Control: max-age=86400 Accept-Ranges: bytes
- 25. Stable URL Concerns? • Working with other people • Want to be able to transfer ownership without changing URL • Use a GitHub organization • github.com/papyri/documentation • papyri.github.com/documentation
- 26. Stable URL concerns • Web 2.0 darling GitHub dies • http://help.github.com/pages/ #custom_domains • Buy a domain name • Alias it to GitHub pages • GitHub dies? Buy static web hosting, upload from your local Git repository, change domain alias to new web host
- 27. Stable URL concerns $ curl -I http://mojombo.github.com/ HTTP/1.1 301 Moved Permanently Server: nginx/1.0.13 Date: Fri, 01 Jun 2012 17:55:47 GMT Content-Type: text/html Content-Length: 185 Connection: keep-alive Location: http://tom.preston-werner.com/ Expires: Sat, 02 Jun 2012 17:55:47 GMT Cache-Control: max-age=86400
- 28. Overview • Versioning • Free • Start minting (good?) HTTP URI’s with your data with no support • Obviously NOT a magic bullet for getting RDF representations of your data
- 29. WHY Value of RDF/linked data is in PEOPLE (driving machines) being able to use and discover your data: - without having to know about it directly - without having to speak your language To answer questions you may not be able to anticipate.