Project News

Highlights of the 1st Meetup on Question Answering Systems ? Leipzig, November 21st

On November 21st, AKSW group was hosting the 1st meetup on ?Question Answering? (QA) systems. In this meeting, researchers from AKSW/University of Leipzig, CITEC/University of Bielefeld, Fraunhofer IAIS/University of BonDERI/National University of Ireland and the University of Passau presented the recent results of their work on QA systems. The following themes were discussed during the meeting:

  • Ontology-driven QA on the Semantic Web. Christina Unger presented Pythia system for ontology-based QA. Slides are available here.
  • Distributed Semantic Models for achieving scalability & consistency on QA. André Freitas presented TREO and EasyESA which employ vector-based approach for semantic approximation.
  • Template-based QA. Jens Lehmann presented TBSL for Template-based Question Answering over RDF Data.
  • Keyword-based QA. Saeedeh Shekarpour presented SINA approach for semantic interpretation of user queries for QA on interlinked data.
  • Hybrid QA over Linked Data. Ricardo Usbeck presented HAWK for hybrid question answering using Linked Data and full-text indizes.
  • Semantic Parsing with Combinatory Categorial Grammars (CCG). Sherzod Hakimov. Slides are available here.
  • QA on statistical Linked Data. Konrad Höffner presented LinkedSpending and RDF Data Cube vocabulary to apply QA on statistical Linked Data.
  • WDAqua (Web Data and Question Answering) project. Christoph Lange presented the WDAqua project which is part of the EU?s Marie Sk?odowska-Curie Action Innovative Training Networks. WDAqua focuses on answering different aspects of the question, ?how can we answer complex questions with web data??
  • OKBQA (Open Knowledge Base & Question-Answering). Axel-C. Ngonga Ngomo presented OKBQA which aims to bring cutting edge experts in knowledge base construction and application in order to create an extensive architecture for QA systems which has no restriction on programming languages.
  • Open QA. Edgard Marx presented open source question answering framework that unifies QA approaches from several domain experts.

The meetup decided to meet biannually to fuse efforts. All agreed upon investigating existing architecture for question answering systems to be able to offer a promising, collaborative architecture for future endeavours. Join us next time! For more information contact Ricardo Usbeck.

Ali and Ricardo on behalf of the QA meetup

Announcing GERBIL: General Entity Annotator Benchmark Framework

Dear all,

We are happy to announce GERBIL ? a General Entity Annotation Benchmark Framework, a demo can be found at! With GERBIL, we aim to establish a highly available, easy quotable and liable focal point for Named Entity Recognition and Named Entity Disambiguation (Entity Linking) evaluations:

  • GERBIL provides persistent URLs for experimental settings. By these means, GERBIL also addresses the problem of archiving experimental results.
  • The results of GERBIL are published in a human-readable as well as a machine-readable format. By these means, we also tackle the problem of reproducibility.
  • GERBIL provides 11 different datasets and 9 different entity annotators. Please talk to us if you want to add yours.

To ensure that the GERBIL framework is useful to both end users and tool developers, its architecture and interface were designed with the following principles in mind:

  • Easy integration of annotators: We provide a web-based interface that allows annotators to be evaluated via their NIF-based REST interface. We provide a small NIF library for an easy implementation of the interface.
  • Easy integration of datasets: We also provide means to gather datasets for evaluation directly from data services such as DataHub.
  • Extensibility: GERBIL is provided as an open-source platform that can be extended by members of the community both to new tasks and different purposes.
  • Diagnostics: The interface of the tool was designed to provide developers with means to easily detect aspects in which their tool(s) need(s) to be improved.
  • Portability of results: We generate human- and machine-readable results to ensure maximum usefulness and portability of the results generated by our framework.

We are looking for your feedback!

Best regards,

Ricardo Usbeck for The GERBIL Team

@BioASQ challenge gaining momentum
BioASQ is a series of challenges aiming to bring us closer to the vision of machines that can answer questions of biomedical professionals and researchers. The second BioASQ challenge started in February 2013. It comprised two different tasks: Large-scale biomedical semantic indexing (Task 2a), and biomedical semantic question answering (Task 2b).
In total 216 users and 142 systems registered to the automated evaluation system of BioASQ in order to participate in the challenge; 28 teams (with 95 systems) finally submitted their suggested solutions and answers. The final results were presented at the BioASQ workshop in the Cross Language Evaluation Forum (CLEF), which took place between September 23 and 26 in Sheffield, U.K.

The Awards Went To The Following Teams

Task 2a (Large-scale biomedical semantic indexing):

  • Fudan University (China)
  • NCBI (USA)
  • Aristotle University of Thessaloniki (Greece) and atypon.com (USA)

Task 2b (Biomedical semantic question answering):

  • Fudan University (China)
  • NCBI (USA)
  • University of Alberta (Canada)
  • Seoul National University (South Korea)
  • Toyota Technological Institute (Japan)
  • Aristotle University of Thessaloniki (Greece) and atypon.com (USA)

Best Overall Contribution:

  • NCBI (USA)
The second BioASQ competition, challenge continued the impressive achievements of the first one, pushing the research frontiers in biomedical indexing and question answering. The systems that participated in both tasks of the challenge achieved a notable increase in accuracy over the first year. Among the highlights is the fact that the best systems in task 2a outperformed again the very strong baseline MTI system provided by NLM. This is despite the fact that the MTI system itself has been improved by incorporating ideas proposed by last year?s winning systems. The end of the second challenge marks also the end of the financial support for BioASQ, by the European Commission. We would like to take this opportunity to thank the EC for supporting our vision. The main project results (incl. frameworks, datasets and publications) can be found at the project showcase page at http://bioasq.org/project/showcase. Nevertheless, the BioASQ challenge will continue with its third round BioASQ3, which will start in February 2015. Stay tuned!
About BioASQ
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 Department of Informatics of the Athens University of Economics and Business in Greece (visit the BioASQ project partners page). 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. BioASQ started in October 2012 and was funded for two years by the European Commission as a support action (FP7/2007-2013: Intelligent Information Management, Targeted Competition Framework; grant agreement n° 318652). More information can be found at: http://www.bioasq.org. Project Coordinator: George Paliouras (paliourg@iit.demokritos.gr).



Welcome to the Website of the Institute for Applied Informatics (InfAI) e.V.



Founded in 2006, the InfAI – Institute for Applied Informatics e.V. – pursues the promotion of science and research in the areas of computer science and business computing for the public good. The InfAI is a recognized adjunct institute of the University of Leipzig.


These pages contain information about the institute and its research areas, projects and members. If you would like to visit us, a map to our headquarters can be found here.


We look forward to meet you!

This year's SEMANTiCS Conference is being held in Leipzig


International Conference on Semantic Systems, taking place in September, will celebrate its 10th anniversary in 2014


Already for the tenth time, SEMANTiCS Conferenz will be the hot spot of the ‘Semantic Web World’: While in prior years the venue for the event has been Graz or Vienna, this time Leipzig will host SEMANTiCS from September 1–5.


The conference which has attracted more than 250 people every year adresses interests and matters of users from industry and public administrations just as much as topics being focused by developers, researchers and consultants. According to the motto ‘Transfer / Engineering / Community’ numerous talks and round tables will highlight from a number of perspectives how applications based on linked data or text mining have been implemented or will be generated in the future for branches like pharma, media or automotive industry.


The event offers space for practitioners and vendors to talk about state-of-the-art technologies on the ‘market place’, whilst subject matter experts discuss about innovative methodologies, projects and their approaches in the course of domain- and theme-specific sessions. Presentations and scientific papers can be submitted under http://www.semantics.cc/open-calls/.


When: September 4–5, 2014 – SEMANTiCS Conference / co-located events from September 1, 2014
Where: Leipziger Kubus – Helmholtz Centre for Environmental Research – UFZ, Permoserstrasse 15, 04318 Leipzig, Germany (map view)
What: 10th International Conference on Semantic Systems
Who: University Leipzig | Institut for Applied Informatics e. V. & Semantic Web Company GmbH


JPEG 9 with lossless JPEG compression immediately available

The Independent JPEG Group (IJG) at the Leipzig Institute for Applied Informatics has released the new version of the software library „libjpeg“. This software library is the basis for the processing of images in the ubiquitous JPEG format and is used worldwide in a countless number of applications of software vendors and in the photographic industry.

It is available under a fee-free license with open source code. After 15 years of continuous development, the upgrade to the new version 9 enables for the first time an effective lossless image compression mode and thus offers end users and industrial adopters a high added value. The Code is ready for download at the IJG Development Site.

The Big Clean

The Big Clean is a free, 1-day conference that addresses the challenges associated with reuse of public sector data. The event rises to the occasion of teaching the members of public how to recycle public data and reuse it in the pursuit of their own goals, ranging from the use of data to power applications, drive societal changes and provide grounds for a data-driven journalism. The Big Clean is focused on three principal topics:


  • Screen-scraping: the skill of distilling data out of web pages and other poorly structured sources
  • Data refining: the techniques of transforming raw data into usable data
  • Data-driven journalism: the craft of telling stories with data

The event is jointly organized by the National Technical Libraryand members of the LOD2 project.
Practical information




INFORMATICS 2010 – The 40th Annual Conference of the Society for Computer Science in Leipzig

The 40th Annual Conference of the Society for Computer Science (GI) takes place from 27th September until 2nd October 2010 in Leipzig. Workshops, panels and other events will be held from Tuesday, 28th September 2010, until Thursday, 30th September 2010. Tutorials as well as the graduate programme will complement this conference on Monday and Friday.


Experts from science and industry will give a thorough overview on the most important new trends around the conference's topic of “Service Science – New Perspectives for Computer Science”. The focus will be on the „E-Humanities“ as a link between applied informatics and the humanities. The highlight on Wednesday, 29th September 2010, will be the Computer Science Day with invited talks on the conference's topic. Likewise, the 100th birthday of Konrad Zuse, the co-inventor of the first modern computer, will be honoured through talks and an exhibition.


Deadlines:
Workshop proposals should be handed in by 10th January 2010.


Further information can be found at the Society's website for the annual conference.
http://www.informatik2010.de/

Conference SABRE 2009 – Software, Agents, and Services for Business, Research and E-Sciences


March 23 – 25, 2009, Mediencampus Villa Ida, Leipzig, Germany


Next year's SABRE 2009 – Software, Agents and Services for Business, Research, and E-Sciences will feature the following Conferences and Events:


  • BPSC – Business Process and Services Computing
  • InnoLogIST – Intern. Conference on Innovative Logistics Information Systems and Technologies
  • ISSS 2009 – International Symposium on Services Science
  • MDD&PL – Model-Driven Development and Product Lines: Synergies and Experience
  • TMS – Text Mining Services

Further information ...


 
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Last Modification: 2014-05-26 10:40:16 by Sandra Bartsch