  Humans make complex inferences on faces, ranging from objective properties
(gender, ethnicity, expression, age, identity, etc) to subjective judgments
(facial attractiveness, trustworthiness, sociability, friendliness, etc). While
the objective aspects of face perception have been extensively studied,
relatively fewer computational models have been developed for the social
impressions of faces. Bridging this gap, we develop a method to predict human
impressions of faces in 40 subjective social dimensions, using deep
representations from state-of-the-art neural networks. We find that model
performance grows as the human consensus on a face trait increases, and that
model predictions outperform human groups in correlation with human averages.
This illustrates the learnability of subjective social perception of faces,
especially when there is high human consensus. Our system can be used to decide
which photographs from a personal collection will make the best impression. The
results are significant for the field of social robotics, demonstrating that
robots can learn the subjective judgments defining the underlying fabric of
human interaction.
