Confidence Score

Each fact has a confidence score that represents our level of belief on whether this fact is correct or not. A confidence score of one means that we're absolutely certain that this fact is correct — while a confidence score of zero means we're absolutely certain this fact is incorrect.

We expose the confidence score for some facts, such as categories for articles, to make it possible for you to set your own thresholds of accuracy.

Facts are discarded when its confidence score is below 0.5. In other words, you will not see facts with a confidence score under 0.5 in the Knowledge Graph.

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Additional Reading: Data provenance Blog Post

https://blog.diffbot.com/knowledge-graph-glossary/data-provenance/