RonPub UG (haftungsbeschränkt) http://www.ronpub.com Ralf Möller Simon Schiff Özgür L. Özcep Peter Poensgen Ontology-Based Data Access to Big Data 21-32 2019 Open Journal of Databases (OJDB) 6 6 http://nbn-resolving.de/urn:nbn:de:101:1-2018122318334350985847 https://www.ronpub.com/ojdb/OJDB_2019v6i1n03_Schiff.html https://www.ronpub.com/OJDB_2019v6i1n03_Schiff.pdf Quasi-Convex Scoring Functions in Branch-and-Bound Ranked Search 1-11 2020 Open Journal of Databases (OJDB) 7 7 http://nbn-resolving.de/urn:nbn:de:101:1-2019092919333113374958 https://www.ronpub.com/ojdb/OJDB_2020v7i1n01_Poensgen.html https://www.ronpub.com/OJDB_2020v7i1n01_Poensgen.pdf Branch-and-Bound Ranked Search by Minimizing Parabolic Polynomials 12-20 2020 Open Journal of Databases (OJDB) 7 7 http://nbn-resolving.de/urn:nbn:de:101:1-2020080219330783060411 https://www.ronpub.com/ojdb/OJDB_2020v7i1n02_Poensgen.html https://www.ronpub.com/OJDB_2020v7i1n02_Poensgen.pdf