Semantic Web & OAuth
I must confess that for a long time I never got this semantic web thing. Now, with the zeal of the recently converted, I see possibilities everywhere.
Part of the reason it took time was an automatic reaction against something being called Web 3.0 (or is it 4.0?). I’m still trying to really understand Web 2.0. Learning about the next big thing could always wait.
Another reason was how early enthusiasts described the semantic web. Calling it the machine readable web doesn’t even begin to make sense.
As far back as 1999, Tim Berners-Lee in Weaving the Web said, “I have a dream for the Web [in which computers] become capable of analyzing all the data on the Web – the content, links, and transactions between people and computers. A ‘Semantic Web’, which should make this possible, has yet to emerge, but when it does, the day-to-day mechanisms of trade, bureaucracy and our daily lives will be handled by machines talking to machines. The ‘intelligent agents’ people have touted for ages will finally materialize.”
Now that’s visionary. Even today, I’m barely beginning to understand that vision.
Thankfully, and perhaps ironically, the very Web 2.0 service Slideshare has some presentations that explain things in a way that we mere mortals can understand. My first pick are the two presentations from Freek Bijl- the first one covers the basics and the second one the technologies. Another one is from Marta Strikland called The Evolution of Web 3.0. This has a great Web 3.0 Meme Map on slide 15 and a comparative list of Web 2.0 and 3.0 on slide 27.
With the semantic web also comes a whole new set of acronyms. A starter list is RDF, SPARQL, SWRL, XFN, OWL, and OAuth. In particular, OAuth being the authentication one is interesting.
OAuth is described as “An open protocol to allow secure API authentication in a simple and standard method from desktop and web applications.” The basic promise is attractive- access to data while still protecting the account credentials. That has the advantage of not requiring people to give up their usernames and passwords to get access to their data. OAuth is a much-improved version of closed proprietary protocols such as Flickr’s API. Importantly, it has support for non-browser access such as desktop applications and mobile services.
So, what are the practical applications of the semantic web? Within the government space, a clear winner is being able to automate the collection of data from multiple government websites and search, filter, or otherwise manipulate the result.
As a simple example, if all government websites had the contact details of their media contact using hCard, it would be easy to have an always up-to-date list that can be displayed, indexed, searched, loaded into an address book, mapped, etc. Even as a relatively simple first step, this would be a big step forward for government.