Jan 30 2010

Digital Social Networks – Perspectives Workshop at Dagstuhl Castle

Published by wastl under KIWI,Social Software

Social Media are one of the revolutionary trends of our time. Up till now, they have been largely driven by practitioners. Research on the field has been either computer science or social sciences and is mainly observing the trend without taking really part. One could argue that this is a good thing, but as a researcher I am of course convinced of the opposite. Last week, we therefore had a “perspectives workshop” at Dagstuhl Castle near Saarbrücken in Germany where we discussed what research can actively do to accompany the social media revolution, “smoothening” its negative effects and emphasising its positive effects on society and economy, and helping in educating currently unaware parts of society, economy, and science. The workshop was organised by Clemens Cap (Rostock University), François Bry (Munich University), Julia Maintz (Microsoft, now freelancer), and myself (Salzburg Research).

Dagstuhl Castle in a nice winter night

While a Dagstuhl workshop in itself is a special thing that you only get granted a few times in a researcher lifetime, a perspectives workshop is even more so, because it is aimed to “kickstart” a research topic, and there are only 5 such workshops overall in a year. Outcome of this workshop will be a manifesto that is distributed to decision and policy makers in politics, research, economy and media. Particularly interesting and noteworthy was the interdisciplinary nature of the workshop with participants from computer science, social sciences, and industry.

The Digital Social Networks Manifesto

In the following, I will briefly sketch the draft outcome of this workshop, a result of countless hours of discussions and a joint work of all participants of the workshop. Since the real manifesto is still to come (I’ll keep you updated), I’ll only summarise what is alreafy there without going into too much details.

What are Social Media?

In the group, we found a common definition of what we believe to be the central aspects of social media:

Digital social media use information and communication technologies (such as the Internet, Web-based technologies, and/or specific software systems) for users and (possibly emerging) communities to collaboratively generate and exchange content and, more generally, to interact. They ease and strengthen social interactions by overcoming physical limitations in communication (like distance and synchronicity) and alleviating human limitations like in the number of people with whom one can maintain relationships. Digital social media thus offer opportunities for social interactions that would not be possible without them. Digital social media build and/or rely upon social networks which can even be the primary purpose of the media.

Examples of online social media are digital social networks (like facebook, LinkedIn and Xing), blogs, content sharing site (like flikr and YouTube), wikis (like used in the wikipedia encyclopedic project), backchannels (like twitter) and innovation markets (like InnoCentive).

Digital social media have appeared during the last decade and have spread extremely rapidly. Some are very successful at building up and keeping users communities. For some users, digital social media have become as common as, or have even replaced, telephone and email.”

Why are they important?

Social media are a revolutionary trend in our society and economy. They change the way we communicate to an extent similar to the invention of the printing press, and accommodate for the communication needs in a world of increased mobility, urbanisation, and globalisation. With the revolutionary character comes a dramatic change in society where existing business models, professions, and societal structures are replaced by new ones that have yet to emerge. At the same time, social media have the potential to offer huge benefits to society in many fields, e.g. the democratic process.

Challenges and Opportunities

We identified challenges and opportunities in the following areas:

  • Socio-cultural Challenges: improving media literacy, smoothen negative and strengthen positive effects, importance of relationships, personal identity, trust and privacy
  • Political Challenges: e-participation, e-democracy, e-Europe, Internet laws and policies
  • Economic Challenges: new business models, integration of social media in enterprises
  • Technological Challenges: usability, trust and privacy, decentralised social networks, media integration, personalisation, …

The challenges will be described in detail in the manifesto, scheduled for end of March.

Research Issues

The topic of digital social networks is a truly interdisciplinary field where researchers from several different fields can (and need to) participate. Since the majority of the participants of the seminar where from the computer science area, most research issues we identified have a computer science focus, but this does not mean that other research issues are less important. We structured research issues along the following themes:

  • Society and Economy
  • Architecture and Infrastructure
  • Services and Applications
  • Trust, Privacy and Security

Barriers and Enablers

There are a number of barriers and enablers that could either hinder that we benefit of social media or support the process. Since this is a delicate topic, I do not want to go into too much detail here until we have decided on the correct phrasing. Just a few examples:

  • an important barrier is lack of media literacy throughout many parts of society, especially with decision makers and those in the educational sector
  • important enablers are the technological development in itself, and the fact that the technology satisfies an apparent communication need in a society with increased mobility, urbanisation and globalisation

The final version of the manifesto is scheduled for end of March. I will publish it then on my website for everyone to read it (and comment on it). In the meantime, feel free to comment and add to what I have written above. ;-)

Acknowledgements

I would like to again say “thank you” to all participants (and all those who wanted to come but could not) for their important contribution. I conclude this blog post with the “group picture” taken before the hike we took as social event on Wednesday:

The Dagstuhl working group on Digital Social Networks

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Jan 16 2010

Wo Bayern am schönsten ist …

Published by wastl under Berge

… das ist im Chiemgau und im Berchtesgadener Land, zwischen Tiroler Ache und Salzach, wo ich daheim bin! Das bekommt man bestätigt an einem Traumtag wie heute – wie eine andere Tourengeherin gesagt hat: “so schee dass ma rean mecht”! Zuerst war ich mit Werner eine schnelle Tour aufs Hirscheck, meiner Meinung nach einer *der* Aussichtspunkte im Berchtesgadener Land. Und droben gibt’s ein Weißbier, dank der ansonsten wenig genutzten Hirscheckbahn. So schaut’s dann aus, blau-weiss wie die bayerische Fahne und golden wie der bayerische Löwe vor der sagenhaften Kulisse des Watzmanns:

Und nachdem die Vormittagstour eher kurz war (Werner hatte nachmittags noch was vor) und das Wetter so schön, hab ich am Nachmittag noch das Radl ausgepackt und bin zum Listsee und Thumsee hochgeradlt, wo u.a. folgendes Bild entstanden ist:

Ein Hoch auf die Heimat, so schön wie bei uns ist’s nirgendwo. Das hat auch schon Humboldt gesagt, und der hat viel gesehen! :-)

Hier gibt es ein paar mehr Bilder:

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Dez 27 2009

Sonnenuntergang am Jenner

Published by wastl under Berge,Fotografieren,Skitour

Der Jenner ist ja eine meiner Standardtouren und ich hab schon öfter drüber geschrieben. Ich geh übrigens am liebsten “hinten rum” oberhalb der Königsbachalm, da hat man Einsamkeit abseits der Piste, kann aber trotzdem bequem und sicher über die Piste abfahren (inzwischen wegen der Beschneiungsanlage den ganzen Winter bis ins Tal). Der Föhn letzte Woche hat uns ja in Südbayern ziemlich getroffen, so dass auch in hohen Lagen kaum Schnee ist; deswegen war für mich die Tour auf den Jenner die Variante bei der man die Ski nicht kaputtmacht; ausserdem kann man den Jenner auch noch am späten Nachmittag gehen und dann denn Sonnenuntergang am Gipfel geniessen. So bin ich am zweiten Weihnachtsfeiertag nachmittags losgestapft; viel gibt’s nicht zu erzählen, aber das Bild vom Sonnenuntergang hinter Watzmann und Großem Hundstod wollt ich Euch nicht vorenhalten; gemacht übrigens nicht mit meiner Spiegelreflexkamera (Canon EOS 400D) sondern mit der “kleinen” Canon SX200:

Heute war ich mit Werner übrigens nochmal die gleiche Tour auf dem Jenner – mangels ordentlicher Alternative. Wir haben entschieden dass das wegen des wenigen Schnees eher eine Winterwanderung ist. ;-)

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Dez 23 2009

KiWi Prototype Release 0.7 (Milestone 3)

Published by wastl under KIWI,Semantic Web,Social Software

Development activity in the last months has been so active that we didn’t manage to issue a KiWi release of acceptable stability. Now we are very proud to announce the availability of the next prototype prerelease! The changes and new features are too abundant to name them all (you can get a list of fixed issues in the Jira Changelog for version 0.7). Here are the highlights:

  • Reasoning. This is the first release to include KiWi’s rule-based reasoner. The reasoner applies rules to triples in the triple store and allows to infer new triples based on this information. Rules can currently only be specified by developers (in a file called rules.txt), but we intend to open this to advanced users of the KiWi system. Evaluation is currently forward chaining with reason maintenance. Reason maintenance can also be used to “explain” to the user why certain triples have been inferred. This is for example visible in the “References” widget of the wiki when hovering the mouse over an inferred relation. The reasoning component has been implemented by Jakub Kotowski at the University of Munich.
  • Querying. The 0.7 KiWi release also for the first time features the new and innovative querying component called “KWQL”. KWQL is an advanced query language that can be used as a replacement for the normal KiWi semantic search. It allows advanced query constructs for querying the structure of KiWi content in a simple-to-use language. KWQL also offers a visual query editor for composing queries. KWQL can be accessed by issuing an ordinary search and then clicking on “KWQL” besides the search input field. KWQL has been implemented by Klara Weiand and Steffen Hausmann at the University of Munich.
  • Information Extraction. The 0.7 release of KiWi has also included a variety of different information extraction technologies (and more to come!) based on GATE and Semantic Vectors. For the moment, information extraction can be used for tag recommendation and recommendation of related articles. Using GATE, English or German texts can be analyzed and more precise tag recommendations can be made. Information extraction has been integrated by Marek Schmidt at the Technical University of Brno.
  • Personalized Search. KiWi also now includes an option to personalize the search results based on the previous tagging activity of the user and the tags associated with the search results. To access personalized search, simply click on the “personalized search” checkbox in the search interface. Note that personalized search requires that you already have some information in your user profile (primarily  tagging behavious). Personalized Search has been implemented by Nilay Coskun and Fred Durao at the University of Aalborg.
  • Community Equity. Release 0.7 is also the first KiWi version to have Sun’s Community Equity algorithm integrated in the system. Community Equity is an algorithm that tries to determin the “social value” of information in a collaborative system by tracking how much interest is generated about a certain item. Community Equity is pretty sophisticated, featuring also an aging algorithm that avoids reputation being built up ad infinitum. Community Equity has been implemented by the Community Equity team at Sun (Josef, Dimitri, Max) and integrated by Mihai Radulescu at Salzburg Research.
  • Optimistic Locking. KiWi 0.7 switched the data and transaction model to more error-proof optimistic locking; this also makes the system more reliable in concurrent situations, i.e. if two users change the same content. Optimistic Locking has been implemented by Stephanie Stroka at Salzburg Research.
  • Simplified Setup. When starting for the first time, users are now guided through a semi-automatic setup process that makes configuring KiWi much simpler than it used to be. The setup process has been implemented by myself, and Mihai is now working on making it even more simpler, allowing users also to configure database and path settings via the Web-based interface.
  • TagIT2. The TagIT application has been completely reimplemented and is scheduled for beta-testing starting January. New features are a completely new user interface, the possibility to display users in addition to news and blog posts, and many usability improvements. TagIT2 has mostly been implemented by Thomas Kurz at Salzburg Research.

There have been many smaller enhancements that I cannot mention here in detail (Exhbit support, Facebook integration, FOAF+SSL integration, …) and even more bug fixes. Thanks a lot to all project members for their participation!

Availability

As usual, the KiWi release is available at the following locations:

Road Map

Undoubtedly, version 0.7 still contains many bugs. In the weeks after Christmas, we will therefore likely release minor updates improving the stability and reliability of the system. These will be numbered 0.7.x.

Version 0.8 of KiWi is scheduled for end of February 2010. It will have improved Community Equity support, first draft of permission management, and Semantic Forms support. Version 0.9 is scheduled for end of May and will feature an improved user interface and widget support based on SmartGWT. Version 1.0 (final) is scheduled for end of August, with one month of testing.

A KiWi handbook will be written starting September 2010. It will contain not only instructions on how to use the KiWi system but also practical examples and best practices on how it can be used.

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Dez 19 2009

Skitour Saisonstart (am Roßfeld)

Published by wastl under Skitour

Nachdem es jetzt schon einige Zeit schneit haben wir (Werner, Michi, und ich) heute endlich die Ski bzw. Schneeshuhe+Snowboards ausgepackt und uns zu einer kurzen Tour aufs Roßfeld aufgemacht. Zum Aufwärmen – die längeren Touren gibt’s dann wenn etwas mehr Schnee liegt. Aber dafür oben mit Gipfelbier von Wieninger und Nürnberger Lebkuchen, passend zu Weihnachten. Nachdem Werner eh einen Blogpost angekündigt hat und die Photos von ihm sind, gibt es nur ein Bild vom Gipfelbier:

rossfeld-01

Ich freu mich schon auf die nächsten Skitouren – Winter ist einfach eine der schönsten vier Jahreszeiten!

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