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The author pointed out on Reddit that a large proportion of the photos don't have faces in them.

• aisofteng 9y ago
  It is obvious that a large percentage of photos are not of people. It is obvious that most photos uploaded to a dating website will have faces in them.
  • lobster_johnson 9y ago
    Did you even read the Reddit comment? [1] Largely the issue with this is that a lot of spammers don't have photos with faces [...] [1] https://www.reddit.com/r/programming/comments/6efoqw/evaluating_perceptual_image_hashes_at_okcupid/diainlz/ https://www.reddit.com/r/programming/comments/6efoqw/evaluat...
    • jbg_ 9y ago
      Wouldn't you then just flag as spam any profiles with a high proportion of photos with no faces in them?