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. Author manuscript; available in PMC: 2017 Mar 22.
Published in final edited form as: SIGMOD Rec. 2016 Feb 6;45(1):60–67.

Figure 6.

Figure 6

A KBC system takes as input unstructured documents and outputs a structured knowledge base. The runtimes are for the TAC-KBP competition system. To improve quality, the developer adds new rules and new data with error analysis conducted on the result of the current snapshot of the system. DeepDive provides a declarative language to specify each type of different rules and data, and techniques to incrementally execute this iterative process.