Compare a time-series forecast with a seasonal baseline
Build a previous-season reference, evaluate it on later observations and distinguish calendar alignment from leakage and missing data.
Time Series / Forecasting / Baseline / Validation
TECHNOLOGY / KNOWLEDGE / PRACTICE
Search results: time-series
Materials on AI, Python, Git, SQL, SAP/ERP, statistics and time series: explanations, examples, practical tips, sources and applicability limits.
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Validate a time-series forecast without leaking the future
Use chronological splits and fit preprocessing only on past data.
Python / Time series / Validation
Validating Forecasts with TimeSeriesSplit and Per-Horizon Error Analysis
Use TimeSeriesSplit to evaluate time-ordered forecasts without leakage, compute per-horizon errors, and choose a strictly consistent metric that matches the decision cost.
time-series / cross-validation / forecast-evaluation / scoring-functions / decision-cost / scikit-learn