2018_Notes.md

2018 Notes

PyData NYC Oct 2018

pandas: Integer NA as a first class citizen
Jeff Reback (Two Sigma)

  https://www.youtube.com/watch?v=gxvTVxlvH9w
  https://github.com/jreback/pydata_nyc-2018

• Extension Arrays - Specification of how external arrays interface with pandas
  • First class data dtypes
  • Decouple memory management and processing from pandas (and numpy)
• 0.24 - First class dtypes
  • Integer NA
    • dtype='Int64' (capitalized!)
    • Uses IntegerArray instead of numpy array
    • has values and a mask

    s.values        # IntegerArray([1, 2, nan], dtype='Int64')
    s.values._data  # array([1, 2, 1])
    s.values._mask  # array([False, False, True])

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Measuring Model Fairness
J. Henry Hinnefeld (Civis Analytics)

  https://www.youtube.com/watch?v=V3tmxMf2UH8

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