Bo-Wei Chen Kuan-Lin Hou Half Quadratic Dual Learning for Fuzzy Multiconcepts of Partially-Observed Images. 994-1007 2022 6 IEEE Trans. Emerg. Top. Comput. Intell. 4 https://doi.org/10.1109/TETCI.2022.3142622 db/journals/tetci/tetci6.html#ChenH22