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can you explain to me what is the method of (Creating domain expertise features)? I have already read a paper that they mentioned this as as method of feature engineering. this is the link of paper: https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7937700&casa_token=4-z8UtRkp1UAAAAA:nsm1HOViwJA6W0lsQz-vTN05OV308R1VvO0c0sjhoAnsspR0ryqrjwApjG0ayUT7IdY4WU1E&tag=1

mahsa
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    I’m voting to close this question because it is not about programming as defined in the [help] but about ML theory and/or methodology - please see the intro and NOTE in the `machine-learning` [tag info](https://stackoverflow.com/tags/machine-learning/info). – desertnaut Sep 20 '21 at 09:41

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The paper you linked to is not accessible (only the intro), but this seems like some prior knowledge was used to build the features. These are sometimes called expert knowledge features.

For example, say I want to predict apple pie taste score and I know that in the apple pie\desserts domain people that score the taste like sugar - I would use this knowledge to have features about the sugar levels.

LemonPy
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