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Flip to reveal answersWhat is the difference between OLAP and data mining?
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All 5 Flashcards — OLAP and data mining
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Question
What is the difference between OLAP and data mining?
Answer
**OLAP** answers a question you already have. **Data mining** finds patterns you did not ask about — one confirms, the other suggests.
Question
Drill down or roll up?
Answer
**Drill down** to finer detail (year → quarter → month). **Roll up** to a coarser summary (store → region → country).
Question
Slice or dice?
Answer
**Slice** fixes **one** dimension to a single value. **Dice** fixes **several** dimensions to ranges.
Question
Name four data mining techniques.
Answer
**Association** (occur together), **clustering** (groups), **classification** (predict a label), **anomaly detection** (unlike the rest).
Question
Why is a mined pattern only a candidate?
Answer
Test enough combinations and some look significant **by chance**. It must be validated on data not used to find it — and it is never causation.
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