RDFa Basics

This is the second video in the series started at http://wiki.digitalbazaar.com/en/semantic-web-intro .

High quality video available from: http://wiki.digitalbazaar.com/en/rdfa-basics

Category:

Science & Technology

Tags:

• rdfa
• basics
• semantic
• web
• manu
• sporny
• syntax
• primer

[apohoyda]

Great video! The first half is especially nice, bravo!

Please consider using foaf:name instead of <foaf:name> in your N3 example.

Don't you have a feeling that putting semantics into HTML is just as wrong, or maybe even worse than mixing style and structure?

[msporny]

Thanks for the foaf:name correction - I'll make sure to make the change it in future videos.

As for the mixing semantics/syntax comment, I think practicality plays a large role in RDFa. There is benefit for keeping the machine readable and the human readable data in sync and in the same document, which is what both Microformats and RDFa does.

[apohoyda]

I also don't think that having more triples will help computers to "understand" anything. More triples will only allow computers to do simple computations on data, but not more.

This could be used by AI in the future, but by itself triples bring no understanding, IMO.

[msporny]

The point I was trying to make is that we have to lay the foundation first, which is exposing triples on web pages. Once those triples are there, there are many, many types of applications we can build based on that foundation. It is analogous to saying that the more people and pages there are on Wikipedia, the more useful that site becomes...

[modanbri]

Very nice :) What's your next topic?

[msporny]

Thanks Dan :)

The next production is probably going to be an advanced RDFa tutorial. Also wanted to do one on the Microformats approach. We'll be doing several on Bitmunk as well...

If you've got any ideas/suggestions of what you'd like to see next, please let me know!

[carpediematlas]

Super cool stuff! Thanks for sharing :)

[ifithegr8]

What a great Video .You simply Rock.............Keep the gud work Up

[radsimu]

And this huge web would become like a global brain. There already are solutions to translating a natural language question into a database style query. So the user will be able to naturally ask the computer complex questions and get precise responses. This google thing is just an example but the power of such technology is hard to describe. Governments could parse emails and phone calls. Having all this knowledge, AI will flourish because the main problem of AI is the lack of knowledge base.

[radsimu]

This is just a way of creating a web of relations between object. You can define your objects and your relations. And this web can be queried very precisely like a database. Computational linguistics is trying to make tools to automatically create rdf out of content. And the main benefit that this is trying to bring to the web as you know it is to have the content of the web pages described in this manner. So imagine having such an rdf for all the content on the net.

[McAko]

I'm very skeptical about the capability of computers to really understand natural language and extract knowledge and reasoning about this data. I think the AI field will have to improve a lot to have succesful results on reasoning in the world of semantic web.

[Platinger]

I don´t really see the point in this. I work as a webdesigner. What´s the benefit for my customers if I write more code (= taking longer = costing more). Do the search engines like this kind of pseudo-semantic informations? Will contents of webpages be found easier and faster? I mean I like semantic html, but this... Does anybody understand what I mean?

[lancsFrogger]

glad the guy ended up writing "dave likes cookies" - until the dude wrote the 2nd o i thought he was gonna write something else & was taking the piss outta me

(must be paranoid cos i don't have a girlfriend)

[SEOWorkbench]

Good overview of RDFa and why it's important.

I do think though that it does add an extra layer of sophistication in terms of data manipulation, but I think it's still al long way off being truly semantic from the machine point of view.

So the machine knows Jane is a freid of Mac - does it know what Jane is? A girl? What's a girl - see where this is going?

[abolemar]

Nice video, easy and helpful

[espiriguidiberto]

nice, I'm not a programmer, but the subject is really interesting for me