Category Archives: Social Software

Jana Herwig

Content Versatility in the KiWi Core System

by , Category: Social Software, Software Development, Tools & Software

It’s been five months since the last Joint Work Package (WP) meeting in the KiWi – Knowledge in a Wiki – project. This morning, we gathered in Vienna for the next round – focus this time around will be on the core system (architecture developed by the WP3 team, handing over and paving the way for WP 4 team) and the use cases (Logica, Sun Microsystems) where it is of particular importance that everyone involved in the project understands the requirements of the use cases.

In the first presentation today, Sebastian Schaffert from Salzburg Research gave us a tour of two different configurations of the KiWi system. The KiWi core system is oriented towards content versatility, meaning that content items can be displayed and used in various contexts and configurations. As a service to the user, KiWi uses Javascript-based WYSIWYG Editor TinyMCE enhanced with a few home-grown plug-ins which, for instance, make it easier to set links to other wiki pages. Memorizing wiki shorthand is sometimes a challenge, so this feature helps getting things done.

Using a different skin and interface, KiWi can take various forms and shapes – even shapes where you might not spot the wiki in it at first glance. TagIT is such an example of an adaptation of the KiWi core system: a geotagging platform targeting youth in Salzburg who can locate, tag and comment on places that matter to them.

Vice versa, KiWi in its wiki incarnation displays a little map, provided a content item is enhanced with geoinformation; technically, the map on the wiki page is an interpretation of a georelated tag (learn more about complex, structured tags proposed by the KiWi Enabling Technologies Work Package in this article: Usage Data Model Day in the KiWi Project).

Take a look at the screenshots below:

KiWi-Screenshot

It is the same article that is being displayed, in the first example using the classic KiWi interface, in the second example using the TagIT interface with the article appearing as an info page.

TagIt Screenshot

This afternoon, we expect to see another configuration of the system, in a presentation about how the system is specifically tailored to the needs of Logica’s “Knowledge Management for Project Management” usecase.

N.B. The system is not yet publicly available, if you have questions, please contact Sebastian Schaffert.

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Thomas Schandl

Short Semantic MediaWiki Tutorial (with link to sandbox)

by , Category: Conferences & Events, Knowledge Management, Linked Data & Open Data, Social Software, Tools & Software, Videos & Tutorials

On the occasion of the recent publication of our book, Social Semantic Web, we have created an accompanying wiki for you to explore the contents of the book and obtain information about its authors. Staying true to the motto “Eat your own dog food”, the Semantic Web Company has used a semantic wiki for that purpose.

We opted for Semantic MediaWiki (SMW) and the extensions Semantic Forms and Semantic Drilldown. In this blog post we’ll take a look at the handy features you get with these. This short tutorial is based on my SMW demonstration at the Web of Data Practitioners’ Days in Vienna two weeks ago.

As the book is in German, the wiki is set up in German, too, but that shouldn’t be a problem for understanding the demonstrated features. For the following examples, we have created a mirror of our productive wiki, so don’t hesitate to edit and play with this mirror wiki (we might refresh it occasionally, so don’t write any data into the wiki that you don’t also have stored elsewhere). This tutorial is going to take you through the following SMW features:

  • Automatically created lists
  • Faceted search
  • Semantic queries
  • Entering data via forms
  • RDF export

So let’s see what these features hold for us.

  • Automatically created lists

A common problem in wikis like Wikipedia is the (amount of) effort it requires to create and maintain various lists like the list of the EU’s largest cities. It’s an equally laborious and error-prone activity to keep such lists up to date; as a result, there are a lot of useful Wikipedia lists we can imagine that don’t exist at all, like a list of the world’s largest corporations with a CEO younger than 35.

In SMW it is easy to create all kinds of lists with queries. This page for the book’s table of contents is an example. View its source to see the inline queries used to generate the page (click to enlarge or view the source on the wiki):

Semantic Media Wiki Query

As a result, the list is generated afresh any time the table of contents page is called up. If the data on an article’s page has changed, it will also be updated in that list – while in regular MediaWikis one has to manually update the data in both places (the article, and the list), which, apart from the extra work, also makes errors and inconsistencies much more likely.

  • Faceted search

Take at look at the list of articles page… Continue reading →

Jana Herwig

The Future, Quantum Encryption, Privacy on the Social Semantic Web

by , Category: Semantics & Philosophy, Social Software

Just two memos: There is a talk tonight with Thomas Länger from the Viennese quantum encryption project (BBC article about the project), co-organized by quintessenz (an organisation devoted to civil rights in the information age) and Transforming Freedom (who are dedicated to documenting the discourse of the battle zones of digital culture; I volunteer for them). ORF wrote a German article about it, with information about the venue and start time. The key issue quintessenz want to raise with this talk is: Who is going to benefit? Will “unbrekable” quantum encryption become available to citizens, too? Quantum encryption cartridges for your PC, anyone?

Secondly: I published an “inaugural interview” Marion Fugléwicz-Bren did with two of my colleagues, Matthias Samwald and Thomas Schandl (not so inaugural for the former, as he already joined SWC in January). I’d like to extract this quote by W3C member Samwald regarding privacy on the (corporation owned) social web and the future (user-managed) social semantic web:

I also think that Semantic Web technologies will receive a lot of media attention when the first big, public breach in security / privacy happens in one of the websites that currently dominate the whole world wide web. At the moment, we all are uploading most of our private and business lives to web sites such as Google, Facebook, Flickr and others. It is just a matter of time until a big scandal happens, be it the companies themselves that misuse the vast amounts of data they have, or be it a government agency in an overzealous effort of crime prevention.

When this will happen, people will re-evaluate the trend towards massive centralisation on the web, and will search for opportunities to make the same feeling of being ‘in the network’ happen in a distributed environment, without selling ones soul to a multinational corporation. Then we will find that such an opportunity already exists — the Semantic Web.

Read the whole interview here.

Jana Herwig

Multimedia in the Web of Data – Annotating and Interlinking Photos, Music, Multimedia [WOD-PD]

by , Category: Conferences & Events, Internet & Media, Linked Data & Open Data, Mashups & Web services, Social Software

The Web of Data Practitioners Days concluded with the session on Multimedia in the Web of Data, the first part of which was led by Ansgar Scherp (University of Koblenz-Landau, Germany).

Multimedia content, as Ansgar pointed out, is hardly annotated, badly organized, and hardly ever looked at again – just think of the 300 something pics you might take on an average week-end getaway, and which you never touch again. Annotating multimedia content requires a lot of work and dedication – but most of the time, these pictures eventually dissappear in the “digital shoe box” that is your photo management software.

The most obvious remedy is to annotate content as early as possible, ideally when creating the content, ideally already on your portable camera (formerly known as: mobile phone:) Ansgar suggested to provide incentives for people to encourage picture annotation – professionals could for instance receive a higher financial reward if the deliver already annotated pictures. And of course there are ‘Games with a purpose’ such as Google Image Labeler, where players tag images in pairs, with and against each other, and are rewarded with the entertainment factor of the game.

The slide below shows what has happened (or will happen) to the process of creating photo books in the digital age and the age of mashups:

Ansgar Scherp's slides

After all, this is the age of the social semantic web, so why not try and (re-)use the content, structure and contexts that other users have already created on the web? Content augmentation, for the scope that Ansgar is concerned with, consists in the reuse of content and structures (e.g. from sources such as Flickr and Wikipedia, Geonames) made possible through the definition of rules, e.g.:

  • If there are two or less pictures on a page*
  • then automatically augment the page with additional photos using location information.

* Page here means a page in the album you are currently working on – you probably took a picture of yourself and your friend in Paris, and even though you went to the Centre Pompidou, you forgot to actually take a pic of the building itself – well, let the web be your library!

So the goal is clear: develop a procedure for applying automatic content augmentation in the creation of good photo books.

But what makes a ‘good’ photo book anyway? Here are some of the results of a structural analysis of real, human-created photobooks conducted at CeWe Color:

  • % of photos with faces: 36%

  • Number of album pages: 16.96

  • Photos per page: 6.69

  • Text fields per page: 1.45

  • % of pages with text: 87%

There are many rules that can be established from the structural analysis, which can be applied in turn in the creation of photoboooks, e.g. rules like this one,

  • If the text located in the upper third of a page
  • if the font size is equal or larger that 16 points
  • if the number of words is less than 10
  • if there is no caption on the page that has a bigger font size
  • then this page is the title

Ansgar recommended xSmart, which he described as a “context-driven authoring tool for page-based multimedia presentations.”

Ansgar’s presentation was followed by two more: one by Yves Raimond on Interlinking Music on the Web of Data, and one on Interlinking Multimedia – in spite of better intentions, I did not manage to cover these two in detail, but at least I gathered the links to relevant resources from all three sessions… Continue reading →