Update README.md

README.md

@@ -6,29 +6,34 @@ tags:
 - uk
 - supermarket
 - time-series
-- sales
+- parquet
 ---
-# Dataset Card for UK Supermarket Time Series Data
+# Dataset Card for UK Supermarket Time Series Data (Combined)
 
-This dataset combines five separate CSV files of UK supermarket sales into a single dataset. It contains transactional, product, and pricing data collected from multiple supermarket chains in the UK, making it suitable for time series analysis, forecasting, and retail analytics tasks.
+This dataset is a **consolidated version** of the [Time Series UK Supermarket Data](https://www.kaggle.com/datasets/declanmcalinden/time-series-uk-supermarket-data) originally shared by Declan McAlinden under the Apache License 2.0.  
 
-The merged dataset provides a consolidated view of sales performance, prices, and other key metrics across different retailers.
+It merges the **five original CSV files** (one per UK supermarket) into a **single Parquet file**:  
+`base_retail_gb_snappy.parquet`
+
+The data remains unchanged, but combining the files simplifies loading and analysis, especially for large-scale analytics and machine learning workflows.
 
 ---
 
 ## Dataset Details
 
 ### Dataset Description
-The **UK Supermarket Time Series Data** is a public dataset originally published on Kaggle by Declan McAlinden. It consists of sales and price data from several major UK supermarkets over time. The dataset includes multiple CSV files (one per supermarket) that can be merged into a single dataset for analysis.
+The dataset provides sales and price time-series data from several UK supermarkets.  
+It captures product sales, pricing, and other retail metrics over time, making it useful for time series forecasting, retail analysis, and demand prediction.  
 
 - **Curated by:** Declan McAlinden  
+- **Merged into Parquet by:** Rif Kiamil (Riz Inc)  
 - **Funded by [optional]:** Not specified  
-- **Shared by:** Declan McAlinden  
-- **Language(s):** Not applicable (data is numeric and categorical)  
-- **License:** [Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0)
+- **Shared by:** Declan McAlinden via Kaggle  
+- **Language(s) (NLP):** Not applicable (structured data)  
+- **License:** [Apache License 2.0](http://www.apache.org/licenses/)
 
 ### Dataset Sources
-- **Repository:** [Kaggle – Time Series UK Supermarket Data](https://www.kaggle.com/datasets/declanmcalinden/time-series-uk-supermarket-data)  
+- **Original Repository:** [Kaggle – Time Series UK Supermarket Data](https://www.kaggle.com/datasets/declanmcalinden/time-series-uk-supermarket-data)  
 - **Paper [optional]:** Not specified  
 - **Demo [optional]:** Not specified  
 
@@ -37,7 +42,28 @@ The **UK Supermarket Time Series Data** is a public dataset originally published
 ## Uses
 
 ### Direct Use
-- Time series forecasting of retail sales.
-- Price trend analysis across supermarkets.
-- Demand prediction and seasonality analysis.
-- Data engineering practice for merging and transforming datasets.
+- **Exploratory data analysis (EDA)** on retail sales and pricing.  
+- **Time series forecasting** of product sales.  
+- **Price sensitivity analysis** across multiple UK supermarket chains.  
+- **Data engineering practice**, e.g., merging, cleaning, and converting CSV files into optimized formats like Parquet.
+
+### Out-of-Scope Use
+- Using the dataset in ways that violate the Apache 2.0 license.
+
+## Citation
+
+If you use this dataset, please cite as follows:
+
+**APA:**
+McAlinden, D. (2022). *Time Series UK Supermarket Data*. Kaggle. https://www.kaggle.com/datasets/declanmcalinden/time-series-uk-supermarket-data  
+
+**BibTeX:**
+```bibtex
+@misc{mcalinden2022timeseries,
+  author       = {Declan McAlinden},
+  title        = {Time Series UK Supermarket Data},
+  year         = {2022},
+  publisher    = {Kaggle},
+  howpublished = {\url{https://www.kaggle.com/datasets/declanmcalinden/time-series-uk-supermarket-data}},
+  note         = {Apache License 2.0}
+}