Metamorphic testing · Question 47 of 60
A team derives several metamorphic relations for an ML system. Which statements about this are correct?
2 answers are correct. Hard
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Answer
- A There are relations in which source and follow-up test case have the same expected result, for example with invariance
- B There are relations in which the expected results deliberately differ, for example with monotonicity
Explanation
Metamorphic relations can describe the same expected results (invariance, for example a slightly brightened image keeps its class) or different ones (monotonicity, for example a larger living area with otherwise identical details does not result in a lower estimated price). They are derived from domain knowledge, requirements or domain properties, not from the model weights. Because incorrect or incomplete relations lead to false confidence, they should be validated, for example by expert review or on reference models.