EventKG - the Hub of Event Knowledge on the Web - and Biographical Timeline Generation
Table 7: Number of events and relations in eventKG-g:event_kg.
['[EMPTY]', '[BOLD] #Events', '[BOLD] Known time', '[BOLD] Known location']
Overall, this version provides information for over 690 thousand events and over 2.3 million temporal relations. Nearly half of the events (46.75%) originate from the existing knowledge graphs; the other half (53.25%) is extracted from semi-structured sources. The data quality of the individual named graphs directly corresponds to the quality of the reference sources. In eventKG-g:event_kg, the majority of the events (76.21%) possess a known start or end time. Locations are provided for 12.21% of the events. The coverage of locations can be further increased in future work, e.g. using NLP techniques to extract locations from event descriptions. Along with over 2.3 million temporal relations, EventKG V1.1 includes relations between events and entities for which the time is not available. This results in overall over 88 million relations. Approximately half of these relations possess interlinking information.