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Update Data Updating Docs (#1203)

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* Update README.md

* Update README.md

* Update README.md
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you-n-g
2022-07-15 14:19:02 +08:00
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scripts/data_collector/yahoo/README.md
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@@ -157,6 +157,9 @@ pip install -r requirements.txt
### Automatic update of daily frequency data(from yahoo finance)
> It is recommended that users update the data manually once (--trading_date 2021-05-25) and then set it to update automatically.
>
> **NOTE**: Users can't incrementally update data based on the offline data provided by Qlib(some fields are removed to reduce the data size). Users should use [yahoo collector](https://github.com/microsoft/qlib/tree/main/scripts/data_collector/yahoo#automatic-update-of-daily-frequency-datafrom-yahoo-finance) to download Yahoo data from scratch and then incrementally update it.
>
* Automatic update of data to the "qlib" directory each trading day(Linux)
* use *crontab*: `crontab -e`