Skosdex progress: basic lucene search

I now have a crude Lucene index derrived from SKOS data. It is more or less a toy example, but somehow promising also. Example below is a test against FAO‘s AGROVOC. Each concept becomes a “document”, with a “word” field containing the prefLabel, and a “uri” field for the concept URI. I don’t index anything […]

Facebook problem statement

People want full ownership and control of their information so they can turn off access to it at any time. At the same time, people also want to be able to bring the information others have shared with them—like email addresses, phone numbers, photos and so on—to other services and grant those services access to […]

Skosdex: SKOS utilities via jruby

I just announced this on the public-esw-thes and public-rdf-ruby lists. I started to make a Ruby API for SKOS. Example code snippet from the readme.txt (see that link for the corresponding output): require “src/jena_skos” s1 = SKOS.new(“http://norman.walsh.name/knows/taxonomy”) s1.read(“http://www.wasab.dk/morten/blog/archives/author/mortenf/skos.rdf” ) s1.read(“file:samples/archives.rdf”) s1.concepts.each_pair do |url,c| puts “SKOS: #{url} label: #{c.prefLabel}” end c1 = s1.concepts[“http://www.ukat.org.uk/thesaurus/concept/1366”] # Agronomy puts […]

Family trees, Gedcom::FOAF in CPAN, and provenance

Every wondered who the mother(s) of Adam and Eve’s grand-children were? Me too. But don’t expect SPARQL or the Semantic Web to answer that one! Meanwhile, … You might nevetheless care to try the Gedcom::FOAF CPAN module from Brian Cassidy. It can read Gedcom, a popular ‘family history’ file format, and turn it into RDF […]

Cross-browsing and RDF

Cross-browsing and RDF While cross-searching has been described and demonstrated through this paper and associated work, the problem of cross-browsing a selection of subject gateways has not been addressed. Many gateway users prefer to browse, rather than search. Though browsing usually takes longer than searching, it can be more thorough, as it is not dependent […]

OpenID – a clash of expectations?

Via Dan Connolly, this from the mod_auth_openid FAQ: Q: Is it possible to limit login to some users, like htaccess/htpasswd does? A: No. It is possible to limit authentication to certain identity providers (by using AuthOpenIDDistrusted and AuthOpenIDTrusted, see the main page for more info). If you want to restrict to specific users that span […]

Google Visualization API – external datasources

You can now wire-in external datasources to Google’s Visualization API (see announcement). Previously, you had to populate the various UI widgets from Javascript or from Google-hosted datasources (such as spreadsheets). Their examples page shows some of the possible visualizations. My favourite are the Motion Charts, based on work acquired from the wonderful GapMinder project.

OpenID, OAuth UI and tool links

A quick link roundup: From ‘Google OAuth & Federated Login Research‘: “The following provides some guidelines for the user interface define of becoming an OAuth service provider” Detailed notes on UI issues, with screenshots and links to related work (opensocial etc.). Myspace’s OAuth Testing tool: The MySpace OAuth tool creates examples to show external developers […]

Drupal social/data Web developments

Dries Buytaert  on ‘Drupal, the Semantic Web, and search’. Discusses RDFa, SearchMonkey and more. Great stuff! Excerpt: This kind of technology is not limited to global search. On a social networking site built with Drupal, it opens up the possibility to do all sorts of deep social searches – searching by types and levels of […]

Problem statement

A Pew Research Center survey released a few days ago found that only half of Americans correctly know that Mr. Obama is a Christian. Meanwhile, 13 percent of registered voters say that he is a Muslim, compared with 12 percent in June and 10 percent in March. More ominously, a rising share — now 16 […]

Mozilla Ubiquity

The are some interesting things going on at Mozilla Labs. Yesterday, Ubiquity was all over the mailing lists. You can think of it as “what the Humanized folks did next”, or as a commandline for the Web, or as a Webbier sibling to QuickSilver, the MacOSX utility. I prefer to think of it as the […]

Be your own twitter: laconi.ca microblog platform and identi.ca

The laconi.ca microblogging platform is as open as you could hope for. That elusive trinity: open source; open standards; and open content. The project is led by Evan Prodromou (evan) of Wikitravel fame, whose company just launched identi.ca, “an open microblogging service” built with Laconica. These are fast gaining feature-parity with twitter; yesterday we got […]

Referata, a Semantic Media Wiki hosting site

From Yaron Koren on the semediawiki-users list: I’m pleased to announce the release of the site Referata, at referata.com: a hosting site for SMW-based semantic wikis. This is not the first site to offer hosting of wikis using Semantic MediaWiki (that’s Wikia, as of a few months ago), but it is the first to also […]

Google Data APIs (and partial YouTube) supporting OAuth

Building on last month’s announcement of OAuth for the Google Contacts API, this from Wei on the oauth list: Just want to let you know that we officially support OAuth for all Google Data APIs. See blog post: You’ll now be able to use standard OAuth libraries to write code that authenticates users to any […]

OpenSocial schema extraction: via Javascript to RDF/OWL

OpenSocial’s API reference describes a number of classes (‘Person’, ‘Name’, ‘Email’, ‘Phone’, ‘Url’, ‘Organization’, ‘Address’, ‘Message’, ‘Activity’, ‘MediaItem’, ‘Activity’, …), each of which has various properties whose values are either strings, references to instances of other classes, or enumerations. I’d like to make them usable beyond the confines of OpenSocial, so I’m making an RDF/OWL […]