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Twitter's algorithm prefers younger, slimmer and light-skinned faces


  • Twitter's image-cropping algorithm prefers to show faces that are younger, slimmer and with light skin tone, a researcher has found.

  • Bogdan Kulynyc won $3,500 in a contest organised by Twitter to find biases in its cropping algorithm.

  • Earlier Twitter's own research found that the algorithm had a bias towards cropping out black faces.

  • When two faces were in the same image users discovered, that the preview crop appeared to favour white faces, hiding the black faces until users clicked through.

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