An adaptive fractional-order BP neural network based on extremal optimization for handwritten digits recognition. - Min-Rong Chen; Bi-Peng Chen; Guo-Qiang Zeng; Kang-Di Lu; Ping Chu (Neurocomputing, 2020)

Fractional-order convolutional neural networks with population extremal optimization. - Bi-Peng Chen; Yun Chen; Guo-Qiang Zeng; Qingshan She (Neurocomputing, 2022)