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

CodePudding user response：

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.