Keywords: Knowledge graph construction, Wikidata, Wikibase
TL;DR: The open source tool RaiseWikibase for speeding up data filling and knowledge graph construction using Wikibase is presented.
Abstract: We create a knowledge graph of German companies in order to facilitate research with Business, Economic and Related Data (BERD), both modern and historical. For the implementation we chose Wikibase, but the wrappers of the Wikibase API turned out to be slow for filling it with millions of entities. This work presents the open source tool RaiseWikibase for speeding up data filling and knowledge graph construction by inserting data directly into the database. We test its performance for creating the items and wikitexts and share a reusable example for knowledge graph construction.