>Be female. Women are consistently ranked higher than men. In particular, notice that there is not a single guy in the top 100.<p>This sounds true, but it can't be the real reason—selfies are ranked relative to the other images by the <i>same user</i>. So unless users are taking a lot of #selfies of people of different genders, we can assume the dataset is already controlled for the gender of the person in the image, no? Unless there's some confounding factor at play, such as some demographic segment being more likely to optimize for good selfies occasionally but have boring feeds the rest of the time.<p>would be super interesting, if the data is available, to normalize this by exposure. Of the people that saw an image, how many clicked "like"?