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Update README.md (#1839)

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Update data example to 20240809
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2024-08-30 17:01:55 +08:00
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README.md
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@@ -177,11 +177,11 @@ Also, users can install the latest dev version ``Qlib`` by the source code accor
## Data Preparation
❗ Due to more restrict data security policy. The offical dataset is disabled temporarily. You can try [this data source](https://github.com/chenditc/investment_data/releases) contributed by the community.
Here is an example to download the data updated on 20220720.
Here is an example to download the data updated on 20240809.
```bash
wget https://github.com/chenditc/investment_data/releases/download/20220720/qlib_bin.tar.gz
wget https://github.com/chenditc/investment_data/releases/download/2024-08-09/qlib_bin.tar.gz
mkdir -p ~/.qlib/qlib_data/cn_data
tar -zxvf qlib_bin.tar.gz -C ~/.qlib/qlib_data/cn_data --strip-components=2
tar -zxvf qlib_bin.tar.gz -C ~/.qlib/qlib_data/cn_data --strip-components=1
rm -f qlib_bin.tar.gz
```