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weegreenblobbie / rank_photos

Matplotlib based photo ranking system using the Elo rating system
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Wrong ELO formula #6

Open RanDumSocks opened 2 years ago

RanDumSocks commented 2 years ago

https://github.com/weegreenblobbie/rank_photos/blob/a7458e3e20dd559f4f5f74421702e64864a1e604/rank_photos.py#L344-L346

This is the wrong formula, it should be:

 E_a = 1.0 / (1.0 + 10.0 ** ((R_b - R_a) / 400.0)) 

 E_b = 1.0 / (1.0 + 10.0 ** ((R_a - R_b) / 400.0))
RanDumSocks commented 2 years ago

My fork fixes this and adds many features. Seems more or less like a dead project, so I might maintain it a little bit on my fork.