3. tele-TASK Symposium am HPI in Potsdam

Heute und morgen (13./14. November 2008) findet am Hasso-Plattner-Institut in Potsdam das 3. tele-Task Symposium statt. Ich freue mich auf ein spannendes Programm als auch auf interessante Gäste (unter anderem von der ETH Zürich mit dem Projekt REPLAY, Andreas Nürnberger von der Uni Magdeburg, das Fraunhoher IDM aus Illmenau und viele mehr...).

Natürlich werde ich selbst auch im Programm vertreten sein zum Thema "Semantisch unterstützteu Suche und Navigation in audiovisuellen Datenbeständen" (Slides gibt es später hier via slideshare).

Trendseminar "Semantische Technologien" in Stuttgart am 5. Nov. 2008

Morgen werde ich in Stuttgart die Moderation durch das Seminar "Semantische Technologien - Wissen intelligent und gezielt nutzen", initiiert durch die MFG Fazit Forschung - Informations- und Medientechnologien in Baden-Würtemberg. Dabei geht es insbesondere um die Anwendung von Semantic-Web Technologien in Unternehmen.

Auf der Gästeliste stehen unter anderem Prof. Rudi Studer vom AIFB Karlsruhe und Tassilo Pellegrini von der Semantic Web Company aus Wien, und ich freue mich schon auf die abschließende Podiumsdiskussion, in der ich von den Gästen ihre Meinung zum aktuellen Marktpotenzial der semantischen Technologien, den Chancen für mittelständische Unternehmen und die Zukunft des Semantic Web erfragen werde....

XInnovations 2008, Berlin, Day 02 - Sept. 23, 2008

Today, I'm going to visit the 'Corporate Semantic Web' workshop at XInnovations 2008 in Berlin. At least it seams that semantic technology has reached industry and corporations. "There is no market for semantic technology", as Christoph Tempich from Detecom Int. quotes a former oracle statement in his talk "Analytics drive the Corporate Semantic Web". Therefore, you just have to provide another label, which is 'Enterprise Information Management' with semantic web technology as underlying technology.

During the coffee break I followed a discussion on the planning of an 'Asocial Semantic Web Workshop' for the next WWW conference or ESWC conference. The goal o fthe workshop should be to show in which way the semantic web is vulnerble by SPAM or other offensive techniques, as e.g. denial of service by providing a deadly RDF-sequence that causes temporary data to grow exponentially.....sounds rather intriguing. I'm looking forward wo contribute ;-)

The 2nd session this morning starts with a presentation from Markus Luczak-Rösch from FU Berlin on 'Corporate Ontology Engineering'. Next, Holger Seubert from IBM is presenting 'Enriched Content Browsing', i.e. during page load in the traditional web, the web page is enriched with additional content. The text of the web page is analysed and terms of interest (info spots) are selected and linked with additional contextual information (from the web, from corporate data bases, etc. in another frame of the same window) without leaving the current context.

We had lunch in a small cafe underneath the nearby public railway with russian dishes (Cafe Chagall, Georgenstr. 4, 10117 Berlin). The pelmeni was really delicious!

The afternoon session starts with Thomas Hoppe from Ontonym with a presentation on 'Corporate Semantic Web'. According to his interpretation, the general 'Semantic Web' concept of Tim Berners Lee cannot be simply transported into the corporation as it is. Inside the corporation, it's a different world compared to the outside. All users are employees, vocabulary is (most times) strictly controlled, there are strict access restrictions, services have to be integrated in portals and corporations have to support corporate processes. The session continues with a presentation by Ralf Heese from FU Berlin on 'Corporate Semantic Collaboration'. He introduces the simple text-annotation tool loomp which has the purpose to enable nonexpert users to provide semantic annotations.

[to be continued tomorrow, W3C-Day, XInnovations 2008, Berlin, Day 03...]

XInnovations 2008, Berlin, Day 01, Sept. 22, 2008

For the third time, I'm attending the XInnovations (formerly known as XML-Days) 2008 in Berlin. Although I was often rather dissapointed about the quality of the conference program (you might refer to my previous posts about XML-Tage Berlin here), I decided to give it another try (simply because I can reach Humboldt University in Berlin with local public transportation in about 45 minutes). Also this time, there seemes to be some emphasis on semantic web technology (at least considering the program, there are Semantic Wikis in the Corporate Wiki track and anoteher Corporate Semantic Web Workshop, not to forget the Semantic Web topic in the PhD-Forum).

I started the first day of the coference with participating the Coprporate Wiki Infotag. Denny Vrandecic is talking about the "Semantic Media Wiki" from AIFB Karlsruhe. Denny is starting his talk with some historical facts about WIkipedia. Interesting thing to mention, according to a study from Aaron Swartz, only 2% of all Wikipedia users (it come up to 1.400 people) are primarily responsible for all article changes. This contradicts the commonly assumed opinion that wikipedia is written by millions of users. Then he was introducing the semantic web in general, by stating that the semantic web is nothing but things (nodes, concepts) being connected by certain relationships, forming graphlike structures that can again be related to each other. According to his definition, a semantic wiki is nothing but graphs being created from wiki data.

The next talk I'm attending is in the Ph.D workshop. Olaf Hartig is talking about 'Trustworthiness of Data on the Web'. With the Semantic Web more and more software agents are taking decisions based on (RDF-based) data on the web. But how can we trust those data? Olaf is developing an RDF trust model as a basis for trust assesment and trust-aware data acces. He suggests a scale from [1-;1], where -1 represents 'absolute distrust' and +1 'absolute trust' for a statement. Now, all relationships in an RDF-graph can be weighted with according trust values ranging from [-1] to [+1]. Trust into a set of statements can be expressed with aggregated trust functions ranging from a cautious (conservative) minimum to a slightly optimistic median. The formal trust vocabulary can be found here. Next, criteria for trust assessment are collected and three different trust assessment strategies are defined: user-based (ask the user on his/her opinion about the trustworthiness), provenance-based (taking into account the trustworthiness of the referring users), and opinion-based (recommendations by other users according to their own trustworthiness).

The afternoon session started with Nils Barnickel from Fraunhofer IOCS with a talk on 'Semantic Mediation between Loosely-Coupled Information Models in Service Oriented Architectures'. Semantic descriptions of Web Services are supposed to enable data and service interoperability. One problem being addresses ist the lack of efficient ontology mapping options in current existing onlology languages (although OWL does have a differentFrom or sameAs operator, complex mappings deploying concepts with totally different subgraphs or 1:n, n:m mappings are missing).

Ok, now it's definitely time for a coffee break. after that, I will be joining the 'World Cafe' session, where I will participate in the discussions instead of writing blog.

[to be continued tomorrow, XInnovations Day 02, Corporate Semantic Web Workshop]

Adaptive Multimedia Retrieval 2008 in Berlin, June 26-27, 2008 - Day 02

After the dinner cruise along the river Spree, the second day of Adaptive Multimedia Retrieval 2008 again starts with an interesting invited talk on the European answer to Google search engine technology - THESEUS.

Karsten Müller from Fraunhofer Heinrich-Hertz-Institute is presenting on "THESEUS Project - Applications and Core Technologies for the Semantic Web". First, Karsten makes clear, that THESEUS doesn't want to be Google ;-) THESEUS is a research program for a new internetbased knowledge infrastructure....which from my point of view means nothing else but "the semantic web"....
One part of the THESEUS project is ALEXANDRIA, the virtual library, being lead by Yahoo! with the objective of semantic processing of different forms of content to enable faster access to relevant content, which again means an increase in information quality. Concepts such as an automated tagging framework (including language error correction, synonym & tag merging, and topic focussing, identification of semantic relations), innovative navigation (by presenting thematically related contents) and interaction concepts are involved.
Another part is ORDO, which deals with "Organizing your digital life" with the goal to unify various data formats, multilingual information, structured and unstructured data on the web to enable homogeneous information sources.Problems such as separating important from unimportant, ordering information instead of searching, priorization, identification and visualization of interrelations are addressed.
TEXO is another part with the objective of "Realizing the internet of services" (being lead by SAP Research), offering personalized customized services, community involvement to improve services, as well as a smooth & seamless (userfriendly) adaption and integration of services.
PROCESSUS deals with the "Optimization of business processes" aiming for the objective of anytime providing the user with theright information at any stage of the business process.
MEDICO is another subproject dealing with "Towards Scalable Semantic Image Search in Medicine" and being lead by Siemens.
CONTENTUS, as being the last Use case "Content access and generation from cultural institutions is lead by the Deutsche Nationalbibliothek. Being part of CONTENTUS are tasks such as Digitizing books as well as audiovisual material (including the German Music Archive in Berlin) protecting the cultural heritage. The goal is the semantically interlinked collection of content to achieve a next generation multimedia library.
.....impressive and ambitious project!

The upcoming section this morning is on "Image Tagging" and Marius Renn (at least I hope so) from TU Kaiserslautern is givig a presentation on "Automatic Image Tagging using Community-Driven Online Image Database". Automatic image tagging requires a lot of training data....and flickr is delivering tons of tags per day...but are these flickr data really good candidates for learning? So, in the end, unfiltered community image sets directly do not provide satisfying results. Alas, these databases at least allow large scale image aggregation...
The next talk in this session is given by Christian Hentschel from Fraunhofer HHI Berlin about "Automatic Image Annotation Refinement using Object Co-Occurences". Again, flickr is the target image set with its huge collection of more than 2 billion images, growing by 3 million photos every day. Objects always appear and are perceived in a semantic context.

The following session is on "Symbolic Music Retrieval" and starts with Rainer Typke from Austrian Research Institute for Artificial Intelligence (ÖFAI), but I had to skip this talk. Anyway, the samples of the reduced MIDI files were quite interesting (although I'm not a fan of the Scorpions!). OK, I had to ask afterwards about the usefulness and application of his approach. In music retrieval it can be used to reduce the index size down to 30% of the original index. Also QBE-processing will become much easier while on the other hand you might connect this MIDI-collection to real music files.
The last talk of the morning session is given by Giancarlo Vercellesi from University of Milan on "Automatic synchronization between audio and partial music score presentation". He presents the ParSi architecture, which perfoms an alignment of PCM signal and partial MIDI scores.

The afternoon session is simply entitled with "Systems". Fernando Lopéz from Madrid is giving a presentation on "Towards a fully MPEG-21 compliant adaption engine: complementary description tools and architectural models". Within the MPEG-21 framework several aspects of metadata-driven adaption is not clearly covered. He introduces CAIN, a tool for adapting Digital Items e.g. to different output devices.
The session continues with a presentation on "Mobile museum guide based on fast SIFT recognition" with the objective to identify paintings in galleries simply with the help of mobile pattern recognition without any extra installation on site. The SIFT (Scale Invariant Feature Transform) method is a rather cool algorithm for detecting local features within images that are used to map photographs taken with your PDA or mobile phone in the image gallery with reference pictures from a given database. And actually the live demo did work :)
I guess, we will also use the SIFT-algorithm in yovisto for synchronization of ppt/pdf-slides with the lecture video.

For the last session - "Structuring of Image Collections" - only one speaker showed up. Marc Gelgon is presenting on "Geo-temporal structuring of a personal image database with two-level variational Bayes mixture estimation".

[to be continued...]

Adaptive Multimedia Retrieval 2008 in Berlin, June 26-27, 2008

The next two days, we are attending the Berlin Adaptve Multimedia Retrieval 2008 Workshop at the Heinrich Hertz Institute being located in downtown Berlin. So, it's pretty close to home and the only travelling involved was by S-Bahn :)

The first speaker is Francois Pachett from Sony CSL giving a keynote entitled "What are our audio features worth?"
The fundamental questions are "What makes objects what they are?", ""What are the features of subjectivity?", "How do we perceive objects and how can we transfer this to a machine?" Pachet's research is concerned with the classification of musical objects based on the so called polyphonic timbre that describes the sum of all features of a music object. Interesting thing is the identification of hubs, i.e. songs that are pretty close to every other song. Hubs in general seem to be mere artefacts of static models.
Interesting fact ist that there are companies now, predicting if your song is going to be a hit. Their judgement also relies on feature analysis and they even give recommendations how your song can be improvent to become a hit. Of course you have to pay for that service...but does it really work??

After the coffee break, there's a session on User-Adaptive Music Retrieval. The first talak is presented by Kay Wolter from Fraunhofer IDMT Ilmenau on "Adaptive User-Modelling for Content-Based Music Retrieval". They are adapting a content-based music retrieval system (CBMR) according to user preferences that are determined by acceptances and rejections of recommended songs by the user, which is furthermore used to improve the quality of music recommendations....Reminds me somehow to Pandora or last.fm...
The second talk is presented by Sebastian Stober from Otto-von-Guericke-Universität Magdeburg on "Towards User-Adaptive Structuring and Organization of Music Collections". So, wouldn't it be nice to structure your music collection automatically...but not in the way the software tells you, but the way you like it? The presented system is based on an general adaption approach using self-organizing maps that can be adapted by user interaction.

The first afternoon session is on "User-adaptive Web Retrieval" and starts with a presentation of Florian König from Johannes-Kepler-Universität Linz on "Using thematic ontologies for user- and group-based adaptive personalization in web searching". He introduces Prospector, which is a generic meta-search layer for Google, not constrained only to web search, based on re-ranking of search results and deploying user modells based on Open Directory Project (ODP) taxonomies. As far as I have understood, the applcation is based on the carrot2 framework for open source search engine result clustering.
Next, David Zellhöfer from BTU Cottbus presents on "A Poset Based Approach for Condition Weighting". Similarity search can be determined according to different conditions w.r.t. the search query. Esp. different people have different expectations if it comes to similarity. So, condition weights have to be determined by psychological experiments.

The second afternoon session is about "Music Tracking and Tumbnailing" and starts with a presentation of Tim Pohle from Johannes-Kepler-Universität Linz on "An Approach to Automatically Tracking Music Preference on Mobile Players". Ok, so the basic problem is, someday you will get bored by the music selection on your ipod. Therefore, the goal is to remove songs that you don't like anymore and replace them with new songs that you probably will like. How do you achieve this? Well, with according user feedback, i.e. by tracking the user's decision on choosing or skipping tracks. Tracks that have recently been skipped often will be dropped and replaced by tracks that are similar (according to some feature analyses) to the remaning tracks.
Next, Björn Schuller from Technische Universität Münschen is presenting on "One Day in Half an Hour: Music Thumbnailing Incorporating Harmony- and Rythm Structure". Music thumbnailing is some really cool feature, Just imagine, your sitting in your car and you are looking for another track to hear, but your player always starts songs at the beginning and they have long and boring intros. Therefore, getting to the most interesting (or significant) part of the song immediately would really be something...

The sessions close with an invited talk given by Stefan Weinzierl and Sascha Spors on "The Future of Audio Reproduction. Technology - Formats - Applications". Promissing title, let's see.... We start with a brief history of audio recording and reproduction technology starting from the very first phonograph to modern multichannel spatial surround sound systems. So, the future seems to be real sound field synthesis (wavefield synthesis, WFS) instead of relying on psycho-acustic effects as in today's stereo. Here, an array of loudspeakers reproduces exactly the wave front of the original sound source. For transmitting signals like this, no single channels are recorded anymore, but the original sound signal (without spatial characteristics of the room where it has been recorded, because this would interfere with the characteristics of the room, where it is reproduced) including movement and position of the sound source. Besides existing VRML and MPEG-4 Audio BIFS that focus more on visual scene description than on audio scene descriptions, there is the proposal of a new modeling language for high resolution spatial sound events called ASDF (Audio Scene Description Format).

[...to be continued in Adaptive Multimedia Retrieval 2008 in Berlin, June 26-27, 2008 - Day 02]

bibcamp in Potsdam, 15.-17.5.2008

Bibliothek 2.0 - von der Theorie zur Praxis....
Unter diesem Motto steht das erste deutsche bibcamp, das heute hier in den 'interessanten' Räumlichkeiten (i.e. das 'Schaufenster') der FH Potsdam stattfindet. Geografisch und strategisch günstig in der Nähe des Hauptbahnhofs gelegen präsentiert sich das Gebäude-Ensemble der FH-Potsdam, das sich in direkter Nachbarschaft zur klassizistischen Nikolai-Kirche befindet (die mit ihrer riesigen Kuppel die Skyline von Potsdam dominiert), mit dem diskreten Charme des mir aus Weimar wohlbekannten 'Gauforums' (einem der größten Betonhässlichkeiten, die uns der Bauwahn des dritten Reichs hinterlassen hat...). In einer guten halben Stunde geht es los und ich werde heute vom ersten Tag des bibcamps berichten....

Wie immer beginnt die Konferenz mit der kollektiven WLAN-Suche, die sich hier für manchen Benutzer etwas schwieriger gestaltet, da das WLAN der FH-Potsdam nur in Verbindung mit einem VPN-Tunnel genutzt werden kann...insbesondere mussten wohl Benutzer eines älteren Windows eine hohe Frustrationstoleranz an den Tag legen (zumindest schaute Jörg quasi als 'Guter Geist' dem ein oder anderen über die Schulter und versuchte zu helfen).

Das bibcamp hat sogar ein eigenes Maskottchen, das allerdings noch nicht eingetroffen ist. Die Maskottchen-Idee ist über eine Google-Suche entstanden. Gab man im Vorfeld der Veranstaltung den Suchbegriff 'bibcamp' ein, wurde man von der Suchmaschine vorsichtshalber gefragt, ob man nicht doch den Begriff 'bibercamp' gemeint hatte. Was lag also näher, als den Biber als offizielles bibcamp-Maskottchen zu küren. Foto folgt...


Ok...Vorstellungsrunde. Nicht die Teilnehmer, sondern die Beiträge sind als erstes dran. 'Den Mutigen gehört die Welt' und ich bin mal wieder der erste, der sich vortraut und stelle unser Thema 'yovisto' vor. Ach ja...ich hab jetzt auch ein yovisto-T-Shirt. Foto folgt....

Interessante Beobachtung am Rande: für eine barcamp-Veranstaltung ist hier alles ein klein wenig langsam. Auch war nicht jeder 'gezwungen', sich selbst und seine Motivation vorzustellen. Diejenigen, die es taten, waren dafür aber 'sehr' ausführlich...(also nicht die berühmten drei(!) Tags).

Jetzt wird's langsam interessant. Die Diskussion entspannt sich über das bibliothekarische Selbstverständnis ('Bibliothekare haben ja viel mit Büchern zu tun') über den Bibliothek 2.0 Begriff. Vom Schlagwort zum Schlachtruf, dem Für und Wider der damit verbundenen Technologie und dem Ausgeliefertsein gegenüber der Akzeptanz der Nutzer. Nebenbei bemerkt weiss ich jetzt, dass 'Archivar' ein cooler Beruf ist, ohne den die Realisierung des Disney-Films 'Ratatouille' kaum möglich gewesen wäre....

So, nachdem wir (Jörg und ich) noch für ein Videointerview herhalten mussten beginnt jetzt das Abendprogramm mit Powerpoint-Karaoke (inklusive einem 'Chicken-Chicken'-Vortrag...). Das kalte Buffet (inklusive Schmalzbrote) war gar nicht schlecht. Der Rest des Abends spielte sich vornehmlich 'draußen vor der Tür' ab, die gut gemeinte musikalische Untermalung spielte mutterseelenalleine drinnen vor sich hin und berieselte die Reste des kalten Buffets, während sich draußen die interessanten Diskussionen entspannen. Tatsächlich endete der Abend auch 'fast' in einem Fiasko (2.0)..., als das Maskottchen (heist es nun 'Horst' oder nicht?) vorgeblich entführt wurde....

Zum bibcamp wird ja auch eine Menge getwittert....

1st German IPv6 Summit at HPI, Potsdam (Day 02)

The first session today is about IPv6 status and deployment from ISP's (Internet Service Providers) and Operator's point of view, starting with Henning Grote from Deutsche Telekom (DT). DT is one of the big players in Germany, if it comes to IPv6. With more than 10 million end customers the transition from IPv4 to IPv6 really becomes some challenge...Thus, DT was going to present an overall strategy for their IPv6 migration....unfortunately, without giving en explicit timeframe.

Next, Yes Poppe from Tata Communications started his talk with telling the story how IPv6 came into life more than 10 years ago. Certainly interesting for someone like me, who was first involved in IPv6 at about 2000/01. Furthermore, he was referring to global IPv6 connectivity, stating that finally now you can show that there will still be Internet alhough if you completely shut off IPv4.

Wolfgang Fritsche from IABG as being the next speaker was referring to IPv6 deployment in mobile application environments with regards to results being achieved by the EU-project ENABLE. IPv6 offers special benefits for mobile networks such as a sufficiently large address space or an efficient autoconfiguration capability.

Lutz Donnerhacke from IKS Jena as being the next speaker was providing insights into IPv6 deployment from the viewpoint of an ordinary regional ISP, which are obviously of different nature compared to one of the big players such as DT or others.

In the second session -- IPv6 Applications & Developments - Carsten Hatzig from BWB/WTD81 was speaking about IPv6 deployment in military environments. 'The long way to IPv6' for the German Forces was depicted, but among the 5 phases (ranging from general preparations up to the shutdown of IPv4) we are almost only at the beginning...

1st German IPv6 Summit at Hasso-Plattner-Institute, Potsdam, May, 7-8, 2008

Today, I'm writing about a conference, which I had to organize during the last months: The 1st German IPv6 Summit at Hasso Plattner-Institute (HPI) in Potsdam, May 7-8, 2008. Of course I was supported by a rather commited team here at HPI and - at least up to now - everything works out fine.

The first day is reserved for almost political talks only. Although not so interesting from a technical point of view, political statements about the deployment and status of IPv6 are rather important and might help to progress with the great upcoming transition from the old IPv4 to the future internet IPv6. So, the summit started with two important keynotes by Vivane Reding, EU-Commissioner for Media and Information Society (video link to Viviane Reding's keynote) and Vinton Cerf, Chief Evangelist and Vice President of Google -- and of course 'father of the Internet' (video link to Vinton Cerf's keynote).

Other interesting talks were given by Martin Schallbruch, CIO of the Bundesministerium des Inneren about deployment of IPv6 in the public sector, Prof. Lutz Heuser, Vice President of SAP Research, on the Future Internet, and Detlef Eckert from EU Commision of Media and Information Society about the EU strategy on IPv6 deployment.

In the afternood session, internationale experiences with IPv6 deployment were reported by representatives of the Japanese IPv6 Promotion Council, the IPv6 Forum Malaysia, IPv6 Forum Korea, and Telecom Bretagne.

Anyway, we all know that we are running out of IPv4 address space soon. Although, not everybody takes this warning serious, we should face the possibility that there will be no more IPv4 addresses left after 2012. Of course there will still be the internet there, and of course you will receive also your email....but maybe not necessarely on all your mobile devices (at least if you take into account that 2008 there will be more than 3 billion mobile phones....and most of them are able to access mobile internet...well technically speaking...).

And I almost forgot to mention that yovisto.com is also exhibiting at the IPv6 summit. We succeeded in connecting our search engine to the IPv6 network (we have an IPv6 connection from FSU Jena being provided by University of Potsdam...)

IPv6 summit in the media:

• Neue Regeln braucht das Netz, heute.de


• Das Internet braucht neue Hausnummern, FAZ.de


• IPv6: Klagen über zähe Umstellung, orf.at


• IPv6 Protokoll kommt endlich in Bewegung, der Standard.at


• Internet wird umgestellt, Frankfurter Rundschau


• In drei Jahren gibt es keine Internetadressen mehr, netzzeitung.de