Featurization issues

[djsutherland]

• MIGPUMA has joint meaning with MIGSP; same for POWPUMA/POWSP.
• Why does RELP come up so much in the ridge models? What does it mean in practice?

[djsutherland]

• CITWP, YOEP, JWMNP: mean-coding blanks might not be the right thing, since blank means the person was born in the US / doesn't work
• MLP* (when served in military) could probably be simplified; VPS does that
• NWAB, NWAV, NWLA, NWLK, NWRE are recoded into ESR
• RELP (relationship to reference person) is kind of a weird feature
• hierarchical featurization for ANC_P / FOD_P / INDP / NAICSP / OCCP / SOCP?
  • for NAICS/SOC see https://www.census.gov/people/io/methodology/indexes.html
• merge ANC1P/ANC2P, RAC1P/RAC2P/...?
• re-featurize JWAP/JWDP to be circular?
• Things that refer to specific in-US places: MIGPUMA, MIGSP, POBP, POWPUMA, POWSP
• POVPIP: pretty sharp featurization difference between 500 and 501