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Info Extraction & Geo-inferencing Projects

keywords: geoparsing, geocoding, entity extraction, NER, REGEX

Xponents - Geotagging APIs to work with gazetteers and multilingual extraction of geography, date/time, patterns. A pre-built Docker microservice is available with a complete operational gazetteer and geotagger that accepts text. Example applications demonstrate the use of Tika for rendering inputs and GISCore for output formats to demonstrate end-to-end solutions. The geotagger features the Solr TextTagger.

Xponents is primarily a Java-based library and web service, with various Python client entry points. 5,000+ downloads on Docker Hub, so far!.

Last updated 2026-March.

Inactive Modules

This list of projects and experiments is no longer active, but worth listing here as part of the OpenSextant family. Last update is noted in each heading.

  • HOWLER: Ontology translation work. Last update 2016.

    • HOWLER - Translate between simple English text and OWL ontologies
    • HOWLER Kanban - HOWLER combined with Kanban (based on Wekan )

  • GISCore: GIS support. Last update 2019.

    • giscore - GIS file data format streaming input and output library
    • geodesy - Geodetic primitive library
    • The critical elements of GISCore/geodesy have been rolled into Xponents directly.

  • SolrTextTagger - (Retired) A text tagger based on Lucene/Solr. Lat updated 2023. NOTE: As of Solr 7.4 this tagger plugin was migrated to Apache Solr as a formal request handler. Xponents SDK uses the Solr TextTagger still.

  • OpenSextant v1: Original Gangstah. Last updated 2017.

    • OpenSextantToolbox - (Retired) A geotagger and entity extractor employing GATE.
    • opensextant - (Retired) The original OpenSextant project.
      NOTE: Xponents is the currently maintained geotagger solution that took over the main functionality.
    • Gazetteer - (Retired) Pipeline project to render world-wide "geo names" data into gazetteers used by these projects. NOTE: This Gazetteer required Pentaho 6 or earlier and was stuck to Oracle JDK 8.
      Xponents internal gazetteer is current and yields a flexible SQLite intermediate and complete worldwide gazetteer