Chen WuXiaohua Hu 0001Zhoujun Li 0001Xiaohua ZhouPalakorn AchananuparpAlgorithms for Different Approximations in Incomplete Information Systems with Maximal Compatible Classes as Primitive Granules.169-1742007conf/grc/2007GrChttps://doi.org/10.1109/GrC.2007.58https://doi.ieeecomputersociety.org/10.1109/GrC.2007.58db/conf/grc/grc2007.html#WuHLZA07