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README.md

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+---
+license: cc-by-4.0
+task_categories:
+  - image-classification
+language:
+  - en
+tags:
+  - finance
+  - cryptocurrency
+  - candlestick-chart
+  - technical-analysis
+size_categories:
+  - 10K<n<100K
+---
+
+# Crypto-Chart-Dataset
+
+Candlestick chart image dataset for cryptocurrency price prediction research.
+
+## Overview
+
+| Item | Value |
+|------|-------|
+| **Tickers** | 15 (BTC, ETH, BNB, XRP, ADA, DOGE, LTC, LINK, XLM, TRX, ETC, XMR, NEO, EOS, IOTA) |
+| **Total Images** | 29,080 |
+| **Period** | 2015 – 2025 |
+| **Image Size** | ~480×480 px (4×4 inch, 120 dpi) |
+| **Labels** | 6-class forward return (±3%/±5%/±7%, adjusted for crypto volatility) |
+
+## Download
+
+Download `crypto_images.zip` from the Files tab and extract:
+
+```bash
+unzip crypto_images.zip
+```
+
+## Chart Specification
+
+Same as [SP500-Chart-Dataset](https://huggingface.co/datasets/sogosonnet/SP500-Chart-Dataset):
+
+- OHLCV candlestick (Charles style) + Volume bars
+- MA5 (blue dotted), MA60 (red dashed), MA120 (green solid)
+- Bollinger Bands (grey shaded area, α=0.15)
+- Percentage-normalized prices (scale-invariant across tickers)
+
+## Label Definition
+
+Thresholds adjusted for higher crypto volatility:
+
+| Label | Return Range |
+|-------|-------------|
+| `down_7plus` | r < −7% |
+| `down_5_7` | −7% ≤ r < −5% |
+| `down_3_5` | −5% ≤ r < −3% |
+| `up_3_5` | 3% < r ≤ 5% |
+| `up_5_7` | 5% < r ≤ 7% |
+| `up_7plus` | r > 7% |
+
+> Returns in [−3%, +3%] are excluded as ambiguous.
+
+## Citation
+
+```bibtex
+@misc{sp500chart2025,
+  title={SP500-Chart-Dataset},
+  author={Ahn, Jaehyun},
+  year={2025},
+  howpublished={\url{https://github.com/JaehyunAhn/SP500-Chart-Dataset}},
+  note={Yonsei University}
+}
+```
+
+## License
+
+CC BY 4.0