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CamDavidsonPilon/lifelines: v0.20.0

Cameron Davidson-Pilon; Jonas Kalderstam; Paul Zivich; Ben Kuhn; Andrew Fiore-Gartland; Luis Moneda; Gabriel; Daniel WIlson; Alex Parij; Kyle Stark; Steven Anton; Lilian Besson; Jona; Harsh Gadgil; Dave Golland; Sean Hussey; Javad Noorbakhsh; Andreas Klintberg; Joanne Jordan; Jeff Rose; Isaac Slavitt; Eric Martin; Eduardo Ochoa; Dylan Albrecht; dhuynh; Denis Zgonjanin; Daniel Chen; Chris Fournier; Arturo; André F. Rendeiro

Changelog 0.20.0

  • Starting with 0.20.0, only Python3 will be supported. Over 75% of recent installs where Py3.
  • Updated minimum dependencies, specifically Matplotlib and Pandas.
New features
  • smarter initialization for AFT models which should improve convergence.
API changes
  • inital_beta in Cox model's .fit is now initial_point.
  • initial_point is now available in AFT models and CoxTimeVaryingFitter
  • the DataFrame confidence_intervals_ for univariate models is transposed now (previous parameters where columns, now parameters are rows).
Bug fixes
  • Fixed a bug with plotting and check_assumptions.

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