University of Freiburg: Algorithms and Data Structures Group

Code from our various research projects and publications

70 followers
Freiburg im Breisgau, Germany
https://ad.informatik.uni-freiburg.de/front-page-en?set_language=en
bast@informatik.uni-freiburg.de

PinnedLoading

qleverqleverPublic
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++ 526 66
aqquaqquPublic
More Accurate Question Answering on Freebase
Python 107 36
completesearchcompletesearchPublic
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++ 20 5
pfaedlepfaedlePublic
Precise map-matching for public transit feeds. Generates high-quality GTFS shapes from OSM data.
C++ 222 31
large-qa-datasetslarge-qa-datasetsPublic
A collection of large question answering datasets
368 38
pdfactpdfactPublic
A basic tool that extracts the structure from the PDF files of scientific articles.
Java 73 11

Repositories

Showing 10 of 64 repositories

qlever-control Public
ad-freiburg/qlever-control’s past year of commit activity
Python 40Apache-2.0 19 30 14 UpdatedMar 22, 2025
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++ 526Apache-2.0 66 115 50 UpdatedMar 21, 2025
qlever-petrimaps Public
ad-freiburg/qlever-petrimaps’s past year of commit activity
C++ 11 3 5 3 UpdatedMar 19, 2025
util Public
Small library of utility functions
ad-freiburg/util’s past year of commit activity
C++00 0 0 UpdatedMar 19, 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++ 30 0 2 UpdatedMar 19, 2025
ad-blog Public
AD Blog Posts (currently: student project reports)
ad-freiburg/ad-blog’s past year of commit activity
HTML0 36 1 6 UpdatedMar 18, 2025
qlever-ui Public
A user interface for QLever
ad-freiburg/qlever-ui’s past year of commit activity
JavaScript 32Apache-2.0 18 36 (1 issue needs help) 9 UpdatedMar 18, 2025
elevant Public
Entity linking evaluation and analysis tool
ad-freiburg/elevant’s past year of commit activity
Python 21Apache-2.0 1 1 0 UpdatedMar 17, 2025
osm2rdf Public
Convert OpenStreetMap (OSM) data to RDF Turtle, including the object geometries and predicates ogc:sfContains, ogc:sfCovers, ogc:sfIntersects, ogc:sfTouches, ogc:sfCrosses, ogc:sfEquals, and ogc:sfOverlaps. Weekly updated downloads for the whole planet (~ 80 billion triples) and per country.
ad-freiburg/osm2rdf’s past year of commit activity
C++ 25GPL-3.0 8 10 6 UpdatedMar 15, 2025
text-utils Public
Text utilities for Deep NLP
ad-freiburg/text-utils’s past year of commit activity
Rust 5Apache-2.0 1 1 0 UpdatedMar 6, 2025