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Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval
A knowledge graph (KG) has nodes and edges representing entities and relations. Nodes have canonical entity IDs and edges have canonical relation IDs. E.g., in Wikidata, Barack Obama and Honolulu have canonical IDs Q76 and Q18094, and the relation "place of birth" has canonical ID P19. A fact triple involving these as subject, relation and object is written as (Q76, P19, Q18094), or, more colloquially, (Barack Obama, place of birth, Honolulu). Curating and structuring knowledge has been a humandoi:10.1145/3477495.3532679 fatcat:nmw3yihxkzgf3jgdklv4whhtey