Face recognition algorithms and the other-race effect: computational mechanisms for a developmental contact hypothesis
✍ Scribed by Nicholas Furl; P.Jonathon Phillips; Alice J O’Toole
- Book ID
- 104332576
- Publisher
- Wiley (Blackwell Publishing)
- Year
- 2002
- Tongue
- English
- Weight
- 184 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0364-0213
No coin nor oath required. For personal study only.
✦ Synopsis
People recognize faces of their own race more accurately than faces of other races. The "contact" hypothesis suggests that this "other-race effect" occurs as a result of the greater experience we have with own-versus other-race faces. The computational mechanisms that may underlie different versions of the contact hypothesis were explored in this study. We replicated the other-race effect with human participants and evaluated four classes of computational face recognition algorithms for the presence of an other-race effect. Consistent with the predictions of a developmental contact hypothesis, "experience-based models" demonstrated an other-race effect only when the representational system was developed through experience that warped the perceptual space in a way that was sensitive to the overall structure of the model's experience with faces of different races. When the model's representation relied on a feature set optimized to encode the information in the learned faces, experience-based algorithms recognized minority-race faces more accurately than majority-race faces. The results suggest a developmental learning process that warps the perceptual space to enhance the encoding of distinctions relevant for own-race faces. This feature space limits the quality of face representations for other-race faces.
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