The map matching functionality is now located in the main repository https://github.com/graphhopper/graphhopper#map-matching

Ytk-learn is a distributed machine learning library which implements most of popular machine learning algorithms(GBDT, GBRT, Mixture Logistic Regression, Gradient Boosting Soft Tree, Factorization …

Data Polygamy is a topology-based framework that allows users to query for statistically significant relationships between spatio-temporal data sets.

A set of programs to generate an inverted index for enwiki-multistream.xml and handle queries.