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README.md

@@ -1,7 +1,6 @@
 ---
 license: other
 language:
-- de
 - en
 tags:
 - destatis
@@ -13,10 +12,62 @@ tags:
 
 # destatis-ml-static-de-opendata-data-gastgewerbeumsatz-nominal-x13
 
-## Inoffizieller Hinweis / Unofficial note
-Dieses Repository ist ein **privates Open-Source-Projekt** und **nicht offiziell** vom Statistischen Bundesamt (Destatis) betrieben.
-
+## Unofficial Notice
 This repository is a **private open-source project** and is **not an official** repository of the Federal Statistical Office of Germany (Destatis).
 
-## Quelle / Source
-- https://www.destatis.de/static/de_/opendata/data/gastgewerbeumsatz_nominal_x13.csv
+## Data Explanation
+- Official dataset label: X13 JDemetra+
+- Source CSV: https://www.destatis.de/static/de_/opendata/data/gastgewerbeumsatz_nominal_x13.csv
+- Source page: https://www.destatis.de/EN/Service/OpenData/short-term-indicators.html
+- Snapshot timestamp (UTC): 2026-05-11T12:20:36.056321+00:00
+
+## Overview
+This dataset contains a machine-learning-ready tabular version of a Destatis open-data series.
+The original CSV is transformed with deterministic preprocessing rules to support reproducible ML workflows.
+
+## Dataset Structure
+Files:
+- `data.csv`: normalized table
+- `README.md`: dataset card with provenance and processing notes
+
+Columns (sample):
+- `datum`
+- `originalwert_messzahlen_2015100`
+- `originalwert_vernderung_gegenber_vorjahresmonat_in_`
+- `saison_und_kalenderbereinigte_werte_nach_x_13_jdemetra_messzahlen_2015100`
+- `saison_und_kalenderbereinigte_werte_nach_x_13_jdemetra_vernderung_gegenber_vorsmonat_in_`
+
+## Processing Pipeline
+The source CSV is processed without AI generation:
+- delimiter normalization
+- header normalization (`snake_case`)
+- missing-value token normalization
+- German numeric normalization (e.g. `1.234,56` -> `1234.56`)
+- row consistency checks
+
+## Data Quality Notes
+- Rows: 348
+- Columns: 5
+- Numeric columns ratio: 0.80
+- Missing ratio: 0.01
+- Quality note: ok
+
+## Official Context Snippet
+rtschaftszweigen, in jeweiligen Preisen, Originalwerte">Turnover at current prices Turnover at constant prices Calendar and seasonally adjusted Turnover at current prices X13 JDemetra+ | BV 4.1 Turnover at constant prices <a class="RichTextExtLink ExternalLink" href="https://www.destatis.de/static/d...
+
+## Intended Use
+This dataset is suitable for:
+- time-series baseline modeling
+- tabular feature engineering
+- analytics and reproducible benchmarking
+
+## Limitations
+- Official revisions can update historical values.
+- Indicator semantics follow Destatis conventions and may require domain context.
+
+## License
+Source data rights follow the official Destatis open-data terms.
+Repository metadata uses `license: other` for Hugging Face compatibility.
+
+## Maintainer
+Maintained by the `destatis` Hugging Face organization (community-run, unofficial).