The Broader Process: Anomaly detection and Alerting.

The fourth major area we will focus on as we develop the ideas of test-driven data analysis is the correctness of the broader process. This relates partly to some of the ideas about consistency checking discussed earlier, but goes further.

A common situation …

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Systematic Unit Tests, System Tests and Reference Tests

The third major idea in test-driven data analysis is the one most directly taken from test-driven development, namely systematically developing both unit tests for small components of the analytical process and carefully constructed, specific tests for the whole system or larger components …

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Consistency Checking of Inputs, Outputs and Intermediates

While the idea of regression testing comes straight from test-driven development, the next idea we want to discuss is associated more with general defensive progamming than TDD. The idea is consistency checking, i.e. verifying that what might otherwise be implicit assumptions are …

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