Negative Knowledge for Open-world Wikidata
Hiba Arnaout, Simon Razniewski, Gerhard Weikum, Jeff Z. Pan
Abstract
The Wikidata knowledge base (KB) is one of the most popular structured data repositories on the web, containing more than 1 billion statements for over 90 million entities. Like most major KBs, it is nonetheless incomplete and therefore operates under the open-world assumption (OWA) - statements not contained in Wikidata should be assumed to have an unknown truth. The OWA ignores however, that a significant part of interesting knowledge is negative, which cannot be readily expressed in this data model.
Topics & Concepts
Computer scienceKnowledge baseWorld Wide WebInformation retrievalKnowledge graphData scienceTopic ModelingAdvanced Graph Neural NetworksNatural Language Processing Techniques