Validate a time-series forecast without leaking the future
Use chronological splits and fit preprocessing only on past data.
Python / Time series / Validation
TECHNOLOGY / KNOWLEDGE / PRACTICE
AI, programming, SQL, Web and SAP: guides and tips
Materials on AI, Python, Git, SQL, Web/API, SAP/ERP, statistics and time series: explanations, examples, practical tips, sources and applicability limits.
Latest guides
49-50 / 50 materialscurl works, fetch fails: diagnosing CORS and preflight
Distinguish response access from request sending, inspect an OPTIONS preflight and configure explicit origins for credentialed browser requests.
HTTP / CORS / fetch / API / Troubleshooting