Yan Song Gangqiang Zhang Jiali He Shimin Liao Ningxin Xie Uncertainty measurement for heterogeneous data: an application in attribute reduction. 991-1027 2022 55 Artif. Intell. Rev. 2 https://doi.org/10.1007/s10462-021-09978-y db/journals/air/air55.html#SongZHLX22