Exercise 2 — The three splits and their positive rates

Guided practice5 min
Time
20-30 min
You need
the kit, the venv active, data/features.csv from Exercise 1
Deliverable
the four-line table of Step 6

The lab kit of the course: https://github.com/hrhouma2/aiopsatlas-ml-data-diagnostics-labs-en

Goal

NorthPeak wants to know one thing: will the model work next quarter? You cut data/features.csv four ways. For each cut you count the rows, measure the share of faults on each side, and count the "neighbours": test rows whose previous day, on the same machine, sits in train. That last number shows how much each split lets the model peek.

Preview — the rest of the lesson is for enrolled readers.

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This lesson is part of the “Week 4 — Data preparation and dataset separation” module

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