Nodalities

From Semantic Web to Web of Data
Nodalities

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Brooke Aker talks with Talis about Expert System and the Semantic Web

In our latest podcast I talk to Brooke Aker, CEO of Expert System in the United States. We talk about Expert System and Brooke’s views on the utility of semantic technologies.

 
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During the conversation, we refer to the following resources;

This conversation was conducted using Skype on Thursday 2 October, recorded with Ecamm Network’s Call Recorder for Skype, and edited on a Mac with Garageband.

For other Talis podcasts in this Nodalities series, see here. To subscribe to updates from all of Talis’ podcast series, see here.

David Provost talks with Talis about his report of a Semantic Web industry ‘On the Cusp’

davidprovost.jpgIn our latest podcast I talk to David Provost about his recent report on the Semantic Web industry, On the cusp: a global review of the Semantic Web industry. I reviewed this report for ZDNet when it was published at the end of last month.

We discuss the report and its findings, before turning to consider the engagement of ‘mainstream’ analysts with semantic technologies.

 
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During the conversation, we refer to the following resources;

This conversation was conducted using Skype on Tuesday 7 October, recorded with Ecamm Network’s Call Recorder for Skype, and edited on a Mac with Garageband.

For other Talis podcasts in this Nodalities series, see here. To subscribe to updates from all of Talis’ podcast series, see here.

Whisky, Space Missions and Evidence: What’s the Connection?

No, these aren’t the necessary precursors for a conspiracy theory about the moon landings, but three of the topics touched upon at the first VoCamp, which took place recently in Oxford. VoCamps are events where motivated individuals can come together and spend some dedicated time creating vocabularies/ontologies for describing data on the Web.

You may have heard of these vocabulary things before. Two popular examples that have been around for some time and are in widespread usage are FOAF (as in Friend of a Friend), for describing people and who they know, and SIOC, for describing the contents of ’social media’ sites such as blogs and discussion fora. But why do we need more vocabularies, and why do we need VoCamps?

We need more vocabularies because people are increasingly motivated to share their data online, and need some way of describing the data itself in a structured fashion. If people use the same vocabularies when describing data of the same type, or at least some of the same terms, it makes sharing and integrating those data sets much easier. For example, imagine you and I both run online shops selling sports equipment, and we want to describe the stock we hold, if we use the same vocabulary to describe that stock data then anyone wanting to cross search our two shops will benefit by not having to map my data structure to yours — we’ll have saved them the job by converging on the same vocabulary from day one.

At this point in time there just aren’t enough vocabularies around to describe the wealth of data in the world. Left to their own devices people will simply create ad-hoc vocabularies which do little to aid data sharing. It’s for these reasons that we need VoCamps, where people can put day-to-day distractions to one side and concentrate on creating technically sound vocabularies in domains that interest them, according to some of the best practices in the field.

VoCampOxford2008 was the start of this process. I used the time to work with Ian and others on a vocabulary/ontology for describing Whisky. Leigh created his Space Flight vocabulary — not just a flippant bit of fun, but a crucial component in his desire to make NASA data more widely accessible and easily archived. Other groups at VoCampOxford2008 worked on a vocabularies for describing IRC discussions, evidence, discourse, participation, votes, journeys and scientific data. See this page for more information on the vocabs we created.

Now, while some people would no doubt argue that whisky and space flight constitute the two most important topics around, there’s still some way to go in creating the rich ecosystem of vocabularies required for a Web of data. That’s why the second VoCamp will take place in Galway, Ireland in late November. Anyone interested in getting their hands (metaphorically) dirty and creating some vocabs should register now before the event fills up — it’s free. Given the location I’ll have to spend a little time in Galway refining the Whisky ontology, but no doubt there’ll be plenty of scope for creating vocabularies in other areas. I may even attempt a vocabulary for describing conspiracy theories, but I imagine that no-one would be able to agree on the details!

Sean Martin talks with Talis about Cambridge Semantics

sean_100x100.shkl.jpgIn our latest podcast I talk to Sean Martin, President and CTO of Cambridge (MA)-based semantic technology startup Cambridge Semantics.

We discuss Sean’s background with IBM, before turning to consider the work he’s currently involved in; building a sustainable business.

 
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During the conversation, we refer to the following resources;

This conversation was conducted using Skype on Friday 5 September, recorded with Ecamm Network’s Call Recorder for Skype, and edited on a Mac with Garageband.

For other Talis podcasts in this Nodalities series, see here. To subscribe to updates from all of Talis’ podcast series, see here.

A Chat with Michael Hausenblas

Michael Hausenblas (mhausenblas on irc, has blog) works at Joanneum Research in the field of media semantics. But as you can see at a glance his homepage, his interest in, and contributions to the Semantic Web/Web of Data cover a considerably broader scope - especially around linked data (he’s one of the team behind riese, serving statistical data about 500 million Europeans).
Photo of Michael

Michael’s also an organizer of the upcoming Web of Data Practitioners Days meet-up (Vienna, Austria - Oct 22-23). As one of the aims of the event is to introduce newcomers - webmasters, developers, business folks - to the ideas and applications of the Web of Data, I quizzed Michael mostly from the newcomer point of view.

 
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Apologies for the recording quality, the Skype recording software I normally use didn’t work, so I had to use a semi-acoustic setup instead…

PS. The podcast audio link itself (as marked up by WordPress) appears to get filtered out by certain aggregators - it’s here: MichaelHausenblas.mp3. Incidentally I also I got a request for a transcript - on listening back I can understand why one might assume such a thing would pre-exist, but there wasn’t actually any preparation (although Michael and I aren’t exactly strangers). I was on sleep-deprived autopilot, firing whatever tricky questions came to mind at Michael, and he volleyed them with remarkable ease.

Dean Allemang talks about TopQuadrant and ‘Semantic Web for the Working Ontologist’

Dean Allemang
In our latest podcast I talk with Dean Allemang, Chief Scientist at TopQuadrant. We discuss TopQuadrant’s approach, and the role that semantic technologies play in this, before turning to discussion of the book that Dean recently wrote with previous podcast subject Jim Hendler.

 
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Creative Commons License

During the conversation, we refer to the following resources;

This conversation was conducted using Skype on 5 June, recorded with Ecamm Network’s Call Recorder for Skype, and edited on a Mac with Garageband. Thanks are due to Andrew Peterson for his advice on editing the audio.

For further Talking with Talis podcasts on the emerging Web of Data, see here.

This Week’s Semantic Web

Selected links related to Semantic Web technologies for the week ending 2008-06-23, all weeks. Also available in RDF as linked data or via GRDDL (this might not be fully functional right now, we just migrated to WordPress and it may be that not eveything is in place yet).

Only a minimal offering this week, a tiny fraction of the things that have been happening recently, but hopefully better than nothing (just to get back into the saddle - I’m still catching up after several week’s travel/holiday time). If you know of something from the last few weeks that simply must appear, please mail me and I’ll include it next week - Danny

In the Media

Docs

Software News

Events etc.

Miscellany

~

Sources include Planet RDF, various other blogs, Semantic Web Interest Group IRC Chatlogs & Scratchpad, ESW Wiki, SemWebCentral, Sweet Tools, W3C Semantic Web Activity, mailing lists, personal emails etc etc. If you see anything suitable this coming week, please mail meor use the mail meor use the del.icio.us tag “TWSW” - thanks!

Linked Data Planet - Free Conference Passes

A significant slice of the Linked Data/Semantic Web community will be gathering next week in New York City for the first Linked Data Planet conference. The programme is packed full of talks from experts in the field, including keynotes from Tim Berners-Lee, Kingsley Idehen and our very own Ian Davis. As sponsors of the conference we have a small number of free passes to give away. The passes give access to the full conference (not just the exhibition hall and keynotes), but do not include travel, accommodation or meals etc - these will need to be covered by the recipients of the free passes. So, if you can make it to NYC next week and would like to have a chance of winning a free pass to this groundbreaking event, just email Paul Miller (firstname.surname at talis.com) with the words “Linked Data Planet passes” in the subject line. The free passes will be given out on a first-come, first-served basis. Good luck, and hope to see you in New York next week!

Empathic Web

karstadt_connection.jpgLast week I listened to a talk by Shane Hipps, a Porsche “consumer anthropologist” turned Mennonite minister. The speaker, clearly aware of the contradictory nature of his background, made a very interesting observation about the digital age. He essentially said that we are, as a society, experiencing a shift of great magnitude in history which reflects one of the greatest changes humanity has ever experienced: literacy.

Moving from an oral tradition to a literate society—in which letters allow people to commit their thoughts to memory—fundamentally changed the way society and individuals thought. It freed individuals to think on their own without having to commit their ideas to the collective memory of their tribe. It also changed the ability of the social groups to sense the emotional state of its individuals, because they could now exist in an abstract, individual mindset.

So, agrarian societies relied on the community to remember and structure their ideas. The result of this community conceptual framework was an empathic connection between members of the community. Writing, on the other hand, allows individuals to remove themselves from the older framework and commit their thoughts to paper resulting in a loss or shift in the empathy of the culture or society. In a digital age, however, there is a new shift: one of removal to connection at a distance.

This concept: empathy at a distance or a digitally-connected community, made me consider the connections in the Semantic Web. The in’s and out’s of the SemWeb have been argued, discussed, debated, and explored technologically. Many blogs and sites have huge amounts of content devoted to the definitions of SPARQL and RDF. Abstractions have been published discussing the applications of this new technology. Sir Tim Berners-Lee refers to the Semantic Web as ‘The Web done right.’

But, what is being done right? Is the Semantic Web the Web done technologically right? Is it an upgrade to the existing framework or a patch to fix what was wrong? Maybe. But it makes me wonder about looking at this from a sociological or communicative perspective. The Semantic Web, technologically, is important to humanity only so far as it’s a medium for our connections.

So, when we make new semantic connections, and the software is increasingly able to associate us with concepts, people, items and communities (like academic institutions or or organisations); what is actually happening? People are making connections, and committing them not only to their own memories but to a community.

Publishing, you might argue, has been around since not that long after the first scribblings of meaning. But, publishing is one-way and narrow. A message or idea is only committed to the memories and added to the mental repertories of those who actually read the message. The same is true in a digital age (with multi-channels for ‘reading’ such as podcasts and video also) but the distinct difference is the access to concepts and the ease of utilising or ‘consuming’ the material. Firstly, digital goods are infinitely (in practice if not in absolute purist terms) copyable. There is no limit to the number of times you can copy and distribute an electronic text or a podcast so society does not have to wait for an idea to filter through because your dad hasn’t finished their Times crossword. Secondly, the connections made digitally (and more semantically-enriched) are increasingly collaborative. With software doing the heavy lifting in terms of data mining and content distribution, more ideas get to more people in more accessible ways.

Finally, although the Semantic Web is far from complete in application, the glimmers it allows us to see could have huge sociological implications. It’s the human element of the Semantic Web which makes it so exciting and so potentially disruptive. It’s possible that people, finding and synthesising ideas before feeding back their individual perspectives into the community, are increasingly able to connect with people and concepts in a more empathic way; without losing the abstract and logical abilities of the literate age.

Is this a new age? Undoubtedly. What will it look like? I’d say: like you and me—people.

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Image: “karstadt connection” by rastafabi from Flickr—Creative Commons

Kingsley Idehen talks about OpenLink Software, Linked Data and the Semantic Web

kidehen1.jpg
In our latest podcast I talk with Kingsley Idehen, President and CEO of OpenLink Software. We discuss OpenLink’s approach, and the role that semantic technologies play in this, before turning to a broader discussion of Linked Data; a movement with which Kingsley has been closely involved.

 
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Creative Commons License

During the conversation, we refer to the following resources;

This conversation was conducted using Skype on Tuesday 13 May, recorded with Ecamm Network’s Call Recorder for Skype, and edited on a Mac with Garageband. Thanks are due to Andrew Peterson for his advice on editing the audio.

For further Talking with Talis podcasts on the emerging Web of Data, see here.