Benjamin Trent 05fb7be571
[7.x] [ML][Inference] Feature pre-processing objects and functions (#46777) (#47040)
* [ML][Inference] Feature pre-processing objects and functions (#46777)

To support inference on pre-trained machine learning models, some basic feature encoding will be necessary. I am using a named object serialization approach so new encodings/pre-processing steps could be added in the future. 

This PR lays down the ground work for 3 basic encodings:

* HotOne
* Target Mean
* Frequency

More feature encodings or pre-processings could be added in the future:

* Handling missing columns
* Standardization
* Label encoding
* etc....

* fixing compilation for namedxcontent tests
2019-09-25 08:16:24 -04:00
..
2018-04-20 15:33:59 -07:00

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