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Cross Lingual Knowledge Extraction

Kontaktperson: Achim Rettinger

Projektstatus: abgeschlossen


The goal of the X-LIKE project is to develop technology to monitor and aggregate knowledge that is currently spread across global mainstream and social media, and to enable cross-lingual services for publishers, media monitoring and business intelligence. In terms of research contributions, the aim is to combine scientific insights from several scientific areas to contribute in the area of cross-lingual text understanding. By combining modern computational linguistics, machine learning, text mining and semantic technologies we plan to deal with the following two key open research problems: - to extract and integrate formal knowledge from multilingual texts with cross-lingual knowledge bases, and - to adapt linguistic techniques and crowdsourcing to deal with irregularities in informal language used primarily in social media. As an interlingua, knowledge resources from Linked Open Data cloud ( will be used with special focus on general common sense knowledge base CycKB ( For the languages where no required linguistic resources will be available, we will use a probabilistic interlingua representation trained from a comparable corpus drawn from the Wikipedia. The solution will be applied on two case studies, both from the area of news. For the Bloomberg case study the domain will be financial news, while for the Slovenian Press Agency we will deal with general news. The technology developed in the project will be used to introduce cross-lingual and information from social media in services for publishers and end-users in the area of summarization, contextualization, personalization, and plagiarism detection. Special attention will be paid to analysing news reporting bias from multilingual sources. The developed technology will be language-agnostic, while within the project we will specifically address English, German, Spanish, and Chinese as major world languages and Catalan and Slovenian as minority languages.

Involvierte Personen
Achim RettingerLei ZhangRudi Studer


von: 1 Januar 2012
bis: 31 Dezember 2014
Finanzierung: EU


Jozef Stefan Institute Ljubljana, Universitat Politècnica de Catalunya, University of Zagreb, Tsinghua University, Intelligent Software Components (ISOCO), Bloomberg, Slovenian Press Agency


Web Science und Wissensmanagement


XLike (Semantische Technologien, Maschinelles Lernen, Text Mining, Natürliche Sprachverarbeitung)


Spartiqulation, X-LiSA



Publikationen zum Projekt
 - book
 - incollection
 - booklet
 - proceedings
 - phdthesis
 - techreport
 - deliverable
 - manual
 - misc
 - unpublished

Lei Zhang, Achim Rettinger
X-LiSA: Cross-lingual Semantic Annotation
Proceedings of the VLDB Endowment (PVLDB), the 40th International Conference on Very Large Data Bases (VLDB), 7, (13), Seiten 1693-1696, September, 2014

Matthias Nickles, Achim Rettinger
Interactive Relational Reinforcement Learning of Concept Semantics
Machine Learning, April, 2013

Lei Zhang, Duc Thanh Tran, Achim Rettinger
Probabilistic Query Rewriting for Efficient and Effective Keyword Search on Graph Data
Proceedings of the VLDB Endowment (PVLDB), the 39th International Conference on Very Large Data Bases (VLDB), 6, (14), Seiten 1642-1653, September, 2013

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Michael Färber, Lei Zhang, Achim Rettinger
Kuphi - An Investigation Tool for Searching for and via Semantic Relations
The Semantic Web: ESWC 2014 Satellite Events, Seiten: 349–354, Springer, Heidelberg, Mai, 2014

Lei Zhang, Michael Färber, Achim Rettinger
xLiD-Lexica: Cross-lingual Linked Data Lexica
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14), Seiten: 2101-2105, European Language Resources Association (ELRA), Mai, 2014

Lei Zhang, Achim Rettinger, Steffen Thoma
Bridging the Gap between Cross-lingual NLP and DBpedia by Exploiting Wikipedia
Proceedings of the NLP&DBpedia workshop co-located with the 13th International Semantic Web Conference (ISWC 2014), CEUR-WS, Oktober, 2014

Achim Rettinger, Lei Zhang, Daša Berović, Danijela Merkler, Matea Srebačić, Marko Tadić
RECSA: Resource for Evaluating Cross-lingual Semantic Annotation
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14), Seiten: 4000-4003, European Language Resources Association (ELRA), Mai, 2014

Lei Zhang, Michael Färber, Thanh Tran, Achim Rettinger
Exploiting Semantic Annotations for Entity-based Information Retrieval
Proceedings of the ISWC 2014 Posters & Demonstrations Track within the 13th International Semantic Web Conference (ISWC 2014), Seiten: 429–432, Springer, Oktober, 2014

Basil Ell, Andreas Harth, Elena Simperl
SPARQL Query Verbalization for Explaining Semantic Search Engine Queries
Proceedings of the 11th Extended Semantic Web Conference (ESWC '14), Seiten: 426-441, Springer, LNCS, Heidelberg

Lei Zhang, Achim Rettinger
Semantic Annotation, Analysis and Comparison: A Multilingual and Cross-lingual Text Analytics Toolkit
Proceedings of the Demonstrations at the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014), Seiten: 13-16, Association for Computational Linguistics, April, 2014

Basil Ell, Andreas Harth
A language-independent method for the extraction of RDF verbalization templates
INLG2014 - 8th International Natural Language Generation Conference, The Association for Computer Linguistics, Juni, 2014

Xavier Carreras, Lluís Padró, Lei Zhang, Achim Rettinger, Zhixing Li, Esteban García-Cuesta, Željko Agić, Bozo Bekavac, Blaz Fortuna, Tadej Štajner
XLike Project Language Analysis Services
Proceedings of the Demonstrations at the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014), Seiten: 9-12, Association for Computational Linguistics, April, 2014

Sudhir Agarwal, Martin Junghans
Towards Simulation-Based Similarity of End User Browsing Processes
In Florian Daniel, Peter Dolog, Qing Li, Web Engineering - Proceedings of the 13th International Conference, ICWE 2013, Aalborg, Denmark, July 8-12, 2013., Seiten: 216-223, Springer, LNCS, 7977, Juli, 2013

Daniel M. Herzig, Peter Mika, Roi Blanco, Thanh Tran
Federated Entity Search using On-The-Fly Consolidation
International Semantic Web Conference (ISWC 2013), Springer LNCS, Oktober, 2013

Lei Zhang, Achim Rettinger, Michael Färber, Marko Tadic
A Comparative Evaluation of Cross-lingual Text Annotation Techniques
Conference and Labs of the Evaluation Forum (CLEF 2013), Seiten: 124–135, Springer, Heidelberg, September, 2013

Martin Junghans, Sudhir Agarwal
Efficient Search for Web Browsing Recipes
2013 IEEE 20th International Conference on Web Services, Santa Clara, CA, USA, June 28 - July 3, 2013, Seiten: 451-458, IEEE, Juni, 2013

Isabelle Augenstein, Sebastian Padó, Sebastian Rudolph
LODifier: Generating Linked Data from Unstructured Text
In Elena Simperl, Philipp Cimiano, Axel Polleres, Oscar Corcho, Valentina Presutti, Proceedings of the 9th Extended Semantic Web Conference, Seiten: 210-224, Springer, LNCS, 7295, Mai, 2012

Uta Lösch, Stephan Bloehdorn, Achim Rettinger
Graph Kernels for RDF Data
In Elena Simperl et. al., Proc. of the 9th Extended Semantic Web Conference (ESWC'12), Springer, Mai, 2012

Nadeschda Nikitina, Birte Glimm
Hitting the Sweetspot: Economic Rewriting of Knowledge Bases
In Bernstein et al., Proceedings of the 11th International Semantic Web Conference (ISWC-12), Springer, November, 2012

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The XLike project organizes the 'xLiTe: Cross-Lingual Technologies NIPS 2012 workshop'. See