Consensual Collaborative Training And Knowledge Distillation Based Facial Expression Recognition Under Noisy Annotations
How to Cite?
Darshan Gera, S. Balasubramanian, "Consensual Collaborative Training And Knowledge Distillation Based Facial Expression Recognition Under Noisy Annotations," International Journal of Engineering Trends and Technology, vol. 69, no. 7, pp. 244-254, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I7P231
Presence of noise in the labels of large scale facial expression datasets has been a key challenge towards Facial Expression Recognition (FER) in the wild. During early learning stage, deep networks fit on clean data. Then, eventually, they start overfitting on noisy labels due to their memorization ability, which limits FER performance. This work proposes an effective training strategy in the presence of noisy labels, called as Consensual Collaborative Training (CCT) framework. CCT co-trains three networks jointly using a convex combination of supervision loss and consistency loss, without making any assumption about the noise distribution. A dynamic transition mechanism is used to move from supervision loss in early learning to consistency loss for consensus of predictions among networks in the later stage. Inference is done using a single network based on a simple knowledge distillation scheme. Effectiveness of the proposed framework is demonstrated on synthetic as well as real noisy FER datasets. In addition, a large test subset of around 5K images is annotated from the FEC dataset using crowd wisdom of 16 different annotators and reliable labels are inferred. CCT is also validated on it. State-of-the-art performance is reported on the benchmark FER datasets RAFDB (90.84%) FERPlus (89.99%) and AffectNet (66%).
Collaborative training, Crowd-sourcing, Knowledge distillation, Facial expression recognition, Noisy annotation.
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