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Library/ EDA/ Exploratory Data Analysis by Building (two projects in parallel)/ E09 · Build: Time-Based EDA (Project B focus)

subtopic

Temporal splits and drift

10 min applied10 min research2 curated resources

Define train/validation/test by date; compare feature and target distributions across years. Concepts: Chronological split; leakage from the future; drift Project A: No time column → stratified random split (80/20, stratify=target, random_state=42). Project B: Train 2015–2017, test 2018; compare yearly load distributions and temperature.

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Temporal splits and drift · 1x1labs.ai