Johannes Frey

Johannes Frey
Address Work
Goerdellering 9, Room Institut fuer Angewandte Informatik (InfAI), 2. OG, AKSW/KILT Office, 04109 Leipzig
Email Office
Phone Work
Fax Work


Johannes studied computer science at Leipzig University with focus on database technologies, computer networks & distributed systems and Semantic Web. During his bachelors he worked as a student assistant at the business information systems department for the “Leipzig Data” project and developed PHP-based semantic solutions for publishing and visualizing RDF data. In his bachelor thesis he created a WordPress plugin for the humanities to author, manage, publish and visualize RDF data within WordPress. In the beginning of 2015 he joined the Knowledge Integration and Linked Data Technologies competence center (KILT) of the Institute of Applied Informatics (InfAI) as graduate assistant. Within this work he supported the creation of an open industry knowledge graph in the “Smart Data Web” research project. In his master thesis he evaluated and benchmarked metadata representation models in RDF stores and wrote Java-based tools for flexible metadata storage and querying.

Since August 2017 he is employed as research assistant of Leipzig University in the KILT group.

His primary research interests in the scope of the Semantic Web are:

  • Data integration & knowledge fusion
  • Metadata(management) in knowledge graphs
  • RDF store benchmarking
  • Scalable & distributed data processing architectures

Reviews & PC Memberships

  • reviewer for ISWC 2016 Poster & Demo
  • reviewer for ICWE 2017
  • reviewer for EACL 2017
  • reviewer for ESWC 2017
  • PC member of Poster & Demo track of Semantics 2017


Workshops & Talks

  • Talk about knowledge fusion and id management for DBpedia in "Interlinking and Metadata" Session of semantics17 workshop "A Reliable Linked Data ecosystem for media"


  • practical course of software engineering lecture 2016
  • practical course of software engineering lecture 2017

Current Projects

  • DBpediaQuerying Wikipedia like a Semantic Database
  • NLP2RDFConverting NLP tool output to RDF
  • Smart Data WebCreation of an industry knowledge base for the German industry.



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LDK conference @ University of Leipzig ( 2019-03-22T09:21:41+01:00 by Julia Holze)

2019-03-22T09:21:41+01:00 by Julia Holze

With the advent of digital technologies, an ever-increasing amount of language data is now available across various application areas and industry sectors, thus making language data more and more valuable. Read more about "LDK conference @ University of Leipzig"

13th DBpedia community meeting in Leipzig ( 2019-02-22T12:22:07+01:00 by Julia Holze)

2019-02-22T12:22:07+01:00 by Julia Holze

We are happy to invite you to join the 13th edition of the DBpedia Community Meeting, which will be held in Leipzig. Read more about "13th DBpedia community meeting in Leipzig"

SANSA 0.5 (Semantic Analytics Stack) Released ( 2018-12-13T09:25:34+01:00 by Prof. Dr. Jens Lehmann)

2018-12-13T09:25:34+01:00 by Prof. Dr. Jens Lehmann

We are happy to announce SANSA 0.5 – the fifth release of the Scalable Semantic Analytics Stack. Read more about "SANSA 0.5 (Semantic Analytics Stack) Released"

AKSW at in São Paulo ( 2018-10-22T09:37:49+02:00 by Natanael Arndt)

2018-10-22T09:37:49+02:00 by Natanael Arndt

From October 1st until 6th a delegation from AKSW Group, Leipzig University of Applied Sciences (HTWK), eccenca GmbH, and Max Planck Institute for Human Cognitive and Brain Sciences went to São Paulo, Brazil to meet people from the Web Technologies … Continue reading → Read more about "AKSW at in São Paulo"

AskNow 0.1 Released ( 2018-09-13T15:35:04+02:00 by Prof. Dr. Jens Lehmann)

2018-09-13T15:35:04+02:00 by Prof. Dr. Jens Lehmann

Dear all, we are very happy to announce AskNow 0.1 – the initial release of Question Answering Components and Tools over RDF Knowledge Graphs. Website: Demo: GitHub: https://github. Read more about "AskNow 0.1 Released"