GreatExpectation
Open Source data validation framework to manage data quality. Users can define and document “expectations” rules about how data should look and behave.
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- Big Data, Data Engineering
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- 2026-10-10
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Python assertions for non-deterministic AI text that drop into pytest. Semantic and rule checks work offline; optional LLM judge with your own model; produces a Trust Score and a single-file HTML report.
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EM (Expectation-Maximization) en.wikipedia.org
Big Data › Data Quality and Observability: “open-source framework for validating, documenting, and testing data quality.”
Data Engineering › Testing: “Open Source data validation framework to manage data quality. Users can define and document “expectations” rules about how data should look and behave.”