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@ad-freiburg

University of Freiburg: Algorithms and Data Structures Group

Code from our various research projects and publications

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  1. qlever qlever Public

    Very fast SPARQL Engine, which can handle very large knowledge graphs like the complete Wikidata, offers context-sensitive autocompletion for SPARQL queries, and allows combination with text search…

    C++ 531 70

  2. aqqu aqqu Public

    More Accurate Question Answering on Freebase

    Python 107 36

  3. completesearch completesearch Public

    Search engine for semi-structured data (text and structured data) that provides all kinds of intelligent search features (keyword search, autocompletion, faceted search, error-tolerant search, syno…

    C++ 22 6

  4. pfaedle pfaedle Public

    Precise map-matching for public transit feeds. Generates high-quality GTFS shapes from OSM data.

    C++ 222 31

  5. large-qa-datasets large-qa-datasets Public

    A collection of large question answering datasets

    372 38

  6. pdfact pdfact Public

    A basic tool that extracts the structure from the PDF files of scientific articles.

    Java 74 11

Repositories

Showing 10 of 64 repositories
  • qlever Public

    Very fast SPARQL Engine, which can handle very large knowledge graphs like the complete Wikidata, offers context-sensitive autocompletion for SPARQL queries, and allows combination with text search. It's faster than engines like Blazegraph or Virtuoso, especially for queries involving large result sets.

    ad-freiburg/qlever’s past year of commit activity
    C++ 531 Apache-2.0 70 118 42 Updated Apr 2, 2025
  • ad-blog Public

    AD Blog Posts (currently: student project reports)

    ad-freiburg/ad-blog’s past year of commit activity
    HTML 0 37 1 4 Updated Apr 1, 2025
  • qlever-control Public
    ad-freiburg/qlever-control’s past year of commit activity
    Python 40 Apache-2.0 19 30 15 Updated Mar 31, 2025
  • qlever-ui Public

    A user interface for QLever

    ad-freiburg/qlever-ui’s past year of commit activity
    JavaScript 33 Apache-2.0 18 36 (1 issue needs help) 7 Updated Mar 31, 2025
  • spatialjoin Public

    Compute spatial self-joins (on intersects, contains, covers, touches, crosses, overlaps, equals) on large collections of WKT geometries. Can handle the complete OSM data as input.

    ad-freiburg/spatialjoin’s past year of commit activity
    C++ 3 0 0 2 Updated Mar 31, 2025
  • util Public

    Small library of utility functions

    ad-freiburg/util’s past year of commit activity
    C++ 0 0 0 0 Updated Mar 28, 2025
  • natural-entity-types Public

    Methods for determining the most natural type of a Wikidata entity

    ad-freiburg/natural-entity-types’s past year of commit activity
    Python 1 0 0 0 Updated Mar 28, 2025
  • wiki_entity_linker Public
    ad-freiburg/wiki_entity_linker’s past year of commit activity
    JavaScript 2 Apache-2.0 0 0 0 Updated Mar 28, 2025
  • elevant Public

    Entity linking evaluation and analysis tool

    ad-freiburg/elevant’s past year of commit activity
    Python 21 Apache-2.0 1 1 0 Updated Mar 28, 2025
  • qlever-petrimaps Public
    ad-freiburg/qlever-petrimaps’s past year of commit activity
    C++ 11 3 5 3 Updated Mar 19, 2025
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