Preview release of RDFaCE special edition for Schema.org

Posted on April 15, 2013 by AliKhalili

RDFaCEWe are happy to announce the preview release of our RDFaCE WYSIWYM content editor special edition for Schema.org. RDFaCE (RDFa Content Editor) extends the TinyMCE rich text editor to facilitate the authoring of semantic documents. This version of RDFaCE is customized for annotating content in RDFa or Microdata formats based on Schema.org vocabularies. It is also published as a WordPress plugin to promote semantic content authoring among a wide variety of end users.

The main features of RDFaCE Schema.org edition are:

  • Support of flexible form-based approach to annotate content using Schemas defined by Schema.org
  • Providing a Schema creator module which creates a subset of Schema.org schemas based on preferred user domain and requirements.
  • Providing a flexible color schemes for Schema.org schemas.
  • Support of RDFa as well as Microdata formats.
  • Support of automatic content annotation using external NLP APIs (Alchemy, Extractiv, Open Calais, Ontos, Evri, Saplo, Lupedia and DBpedia spotlight.).
  • This feature provides an initial set of annotations for users that can be modified and extended later on.
  • Combination of the results of multiple NLP APIs based on user preferences. This features improves the quality of automatic annotations.
  • One click editing of annotated entities.

For more information on RDFaCE visit:

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European project BioASQ sets a challenge to push research in biomedical information retrieval and question answering

Posted on April 12, 2013 by SandraPraetor

Every day, approximately 3000 new articles are published in biomedical journals. That averages to more than 2 articles every minute! Managing this large amount of data is a challenge in itself. Yet, ensuring that this wealth of knowledge is used for the sake of the patients in a timely manner is an even more demanding task for both computer scientists and biomedical experts.

The BioASQ project, which started on October 1st 2012 and runs for 2 years, aims to push research in information technology towards highly precise biomedical information retrieval systems. The project will achieve this goal through a competition (challenge), in which systems from teams around the world will compete. BioASQ will provide the data, software, hardware and the evaluation infrastructure for the challenge. By these means, the project will ensure that the biomedical experts of the future can rely on software tools to identify, process and present the fragments of the huge space of biomedical resources that address their personal questions.

The tasks included in the BioASQ challenges will help advance the state of the art in two fields. First, the automatic classification of biomedical documents will be improved. Here, systems will be required to tag large numbers of scientific biomedical articles with terms from a predefined biomedical vocabulary. Additionally, the challenge will evaluate how well systems identify text fragments in scientific articles, and related data in public knowledge bases, in order to answer questions set by the European biomedical expert team of BioASQ. Further results of the project will include a set of open-source tools and a social network that will support experts in setting up similar challenges, beyond the end of the project.

The BioASQ team combines researchers with complementary expertise from 6 organisations in 3 countries: the Greek National Center for Scientific Research “Demokritos” (coordinator), participating with its Institutes of ‘Informatics & Telecommunications’ and ‘Biosciences & Applications’, the German IT company Transinsight GmbH, the French University Joseph Fourier, the German research Group for Agile Knowledge Engineering and Semantic Web at the University of Leipzig, the French University Pierre et Marie Curie‐Paris 6 and the Research Center of the Athens University of Economics and Business in Greece. Moreover, biomedical experts from several countries assist in the creation of the evaluation data and a number of key players in the industry and academia from around the world participate in the advisory board of the project.

More information can be found at: http://www.bioasq.org
Project Coordinator: George Paliouras (paliourg@iit.demokritos.gr)

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Open Positions for PostDocs, PhD Students and Developers at AKSW

Posted on April 11, 2013 by Sören Auer

There are several open positions for postdoctoral researchers, doctoral students and software developers at AKSW research group in Leipzig. More information can be found here:

http://wiki.aksw.org/Jobs

Applicants will become part of an very international, innovative and social team, be embedded into an entrepreneurial environment and working on successful industry, research, community and open-source projects such as DBpedia, OntoWiki, LIMES, SlideWiki or DL-Learner.

Leipzig, the home of AKSW, is the largest city in eastern Germany, combines a high standard of living with lowest expenses of major German cities. Leipzig is well connected internationally (international airport and ICE high-speed rail hub), and has rich and lively cultural, scientific and economic scenes.

Please forward these job offerings to prospective candidates you might now.

Posted in Announcements | 3 Comments

AKSW @ ISWC

Posted on March 29, 2013 by AmrapaliZaveri

We are happy to announce that this year seven papers from AKSW were accepted at the ISWC in different tracks and covering a wide range of topics as listed below:

ISWC Research track:

TITLE: DAW: Duplicate-AWare Federated Query Processing over the Web of Data
AUTHORS: Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, Josiane Xavier Parreira, Helena Deus and Manfred Hauswirth

TITLE: ORCHID – Reduction-Ratio-Optimal Computation of Geo-Spatial Distances for Link Discovery
AUTHORS: Axel-Cyrille Ngonga Ngomo

TITLE: Pattern Based Knowledge Base Enrichment
AUTHORS: Lorenz Bühmann, Jens Lehmann

TITLE: Real-time RDF extraction from unstructured data streams
AUTHORS: Daniel Gerber, Sebastian Hellmann, Lorenz Bühmann, Ricardo Usbeck, Tommaso Soru and Axel-Cyrille Ngonga Ngomo

ISWC In-Use track:

TITLE: Integrating NLP using Linked Data
AUTHORS: Sebastian Hellmann, Jens Lehmann, Sören Auer and Martin Brümmer

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TITLE: Using Linked Data to evaluate the impact of Research and Development in Europe: a Structural Equation Model
AUTHORS: Amrapali Zaveri, Joao Ricardo Nickenig Vissoci, Cinzia Daraio, Ricardo Pietrobon

ISWC 2013 Evaluation track:

TITLE: Crowdsourcing Linked Data Quality Assessment
AUTHORS: Maribel Acosta, Amrapali Zaveri, Elena Simperl, Dimitris Kontokostas, Sören Auer and Jens Lehmann

See you there mates!

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BioASQ Newsflash

Posted on March 25, 2013 by AxelNgonga

The next BioASQ meeting is coming up. Let the benchmark creation begin! BioASQ (http://www.bioasq.org) will push towards improved biomedical semantic indexing and QA via ambitious, yet realistic challenge tasks. The challenge will run in two stages, designed to (a) adapt traditional semantic indexing and QA methods to the needs of biomedical experts, and (b) collect feedback and improve the experimental setting itself. A large computational infrastructure, already available to the consortium, will be used to evaluate competing systems. The required datasets and evaluation measures will be established before the challenge. Biomedical experts will participate in the consortium, both as partners and through a supporting network of third parties. Check out the website for infos on how you can participate!

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SlideWiki webinar recording available on YouTube

Posted on March 17, 2013 by Sören Auer

We were giving a Webinar on SlideWiki in the course of Open Education Week on Friday. The video recording is now available on YouTube. The webinar comprises a walk-through SlideWiki’s features.

Posted in SlideWiki | Leave a comment

AKSW visits CeBIT2013

Posted on March 16, 2013 by SaeedehShekarpour

On Friday 8th March, a few member of AKSW visited CeBIT.CeBIT is the world’s largest trade fair showcasing digital IT and telecommunications solutions for home and work environments.

CeBIT 2013 was held in Hanover and in a trip taking around two and half an hour we arrived at Hanover. Then, during the day, we could have a quick visit from some halls, chatting with companies representatives. Although it was an intensive visit, and made us quite tired, it was worthy.

Apart from the fair, the trip was also pleasant and full of fun.

Have a look at the following link and get familiar with our future friends 🙂

http://www.youtube.com/watch?feature=player_embedded&v=NCqufqz962M

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SlideWiki webinar tutorial during Open Education Week (March 15, 15:00 GMT)

Posted on March 4, 2013 by Sören Auer

We will perform a Webinar introducing SlideWiki and its features in the course of Open Education Week on March 15 at 15:00 GMT.

While many Learning Content Management Systems are available, the collaborative, community-based creation of rich e-learning content is still not sufficiently well supported. Few attempts have been made to apply crowd-sourcing and wiki-approaches for the creation of e-learning content. In this webinar, we showcase SlideWiki — an Open Courseware Authoring platform supporting the crowdsourced creation of richly structured learning content.

Website:  http://slidewiki.org

Webinar link: https://sas.elluminate.com/m.jnlp?password=M.02943F441C348846BC638C0999A5E8&sid=200 8170

Speakers: Sören Auer, Ali Khalili and Darya Tarasowa
Posted in Events, SlideWiki | 59 Comments

Two AKSW Papers at ESWC

Posted on February 25, 2013 by AxelNgonga

Greetings World.

We are happy to announce that the AKSW papers “COALA – Correlation-Aware Active Learning of Link Specifications” and “When to Reach for the Cloud: Using Parallel Hardware for Link Discovery” were selected for presentation at ESWC 2013. Each of the papers deals with one of the two main hurdles to scalable Link Discovery. COALA presents approaches that improve the convergence of active learning algorithms for learning link specifications. For this aim, COALA uses graph clustering and weight decay to include information on the distribution of most informative positive and negative link candicates in the selection process. The second paper deals with the scalability of Link Discovery and presents practical suggestions on when to use which hardware for linking. As a highlight, it presents GPU and Cloud implementations of the HR3 algorithm that we presented at ISWC 2012. All algorithms are implemented within the LIMES framework.

Looking forward to seeing you at ESWC and link on!

Axel for AKSW

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Call for OpenCourseWare to be published at SlideWiki.org

Posted on February 24, 2013 by Sören Auer

We are looking for additional lecture notes (i.e. slide series) for publication on SlideWiki. We will support the import and enrichment of the courseware in SlideWiki. Original authors will be attributed prominently. A requirement is licensing of the content as Creative Commons Attribution Share Alike. We translate all SlideWiki lectures in many other languages, add self-assessment tests, mobile learning facilities and many other features.

Benefits for authors include:

  • significantly increase your reach by making your courseware accessible to a world-wide audience
  • get your courseware translated into many different languages
  • engage students in contributing to and discussing the slides
  • easily create (self-)assessment tests for students
  • involve peer-educators in improving and maintaining the quality and attractiveness of your courseware
  • * increase your reputation in the community, by sharing qualitative educational content

Please send applications for supporting your lecture notes to be published on SlideWiki by email to auer@uni-leipzig.de till March 1 including the following information:

  • original authors (including email, address and affiliation)
  • original format (pptx preferred)
  • original language (English is preferred)
  • volume (number of presentations and slides)
  • licensing (must be compatible with CC-BY-SA)
  • link to the material
Posted in SlideWiki | 2 Comments