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IEEE/ICACT20210175 Question.3 Questioner: baniyab@gram.edu 2021-02-09 오후 5:14:16	IEEE/ICACT20210175 Answer.3 Answer by Auhor quandh@vnu.edu.vn 2021-02-09 오후 5:14:16
Have you tried the implement the feature selection technique for facial expression classification?	Thanks for your question. A feature selection technique can be applied after the feature extraction phase, probably in order to reduce irrelevant or redundant features while it also decreases the training time of classifier. However, in our survey, we did not study algorithms for feature selection. I highly recommend this paper: Ghosh, M. et al., 2019: Feature selection for facial emotion recognition using late hill-climbing based memetic algorithm. The author introduced a good relevant review of facial feature selection techniques.

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