The default setting of alpha158 does not have infer process

[fire-lit-band]

🐛 Bug Description

To Reproduce

To reproduce the bugs, you can run the workflow_by_code.py, with the model "linear" and you will find the error "the dataset is empty."And I finally find that the defulat setting of alpha158 does not have infer process.

Expected Behavior

Screenshot

Environment

Note: User could run cd scripts && python collect_info.py all under project directory to get system information and paste them here directly.

• Qlib version:
• Python version:
• OS (Windows, Linux, MacOS):
• Commit number (optional, please provide it if you are using the dev version):

Additional Notes

[SunsetWolf]

Hi, @fire-lit-band Thanks for your interest in qlib. Regarding your question:

• I tried to run the script workflow_by_code.py on the latest main branch, and I didn't find the dataset is empty. error, how can I reproduce this issue?
• It is normal for infer_processors to be empty and can be customized to suit your needs.