unsupervised learning
🤖 CT-AI
Official ISTQB Definition
A type of machine learning where the model learns patterns from unlabeled data without predefined outputs.
3 Ways to Think About It
The Quick Take
AI that finds patterns without being told what to look for - testing is tricky because there's no 'correct' answer.
Look Closer
ML that discovers structure in data on its own, requiring testers to validate that found patterns are meaningful.
The Bottom Line
Systems that cluster or group data without labels, making oracle problems especially challenging.
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