Ma, Liwen; Lu, Hui Six-set approximation theorem of neighborhood related rough sets. (English) Zbl 1468.68239 Int. J. Approx. Reasoning 115, 180-193 (2019). MSC: 68T37 PDFBibTeX XMLCite \textit{L. Ma} and \textit{H. Lu}, Int. J. Approx. Reasoning 115, 180--193 (2019; Zbl 1468.68239) Full Text: DOI
Ma, Liwen The investigation of covering rough sets by Boolean matrices. (English) Zbl 1448.68421 Int. J. Approx. Reasoning 100, 69-84 (2018). MSC: 68T37 03E72 15B34 PDFBibTeX XMLCite \textit{L. Ma}, Int. J. Approx. Reasoning 100, 69--84 (2018; Zbl 1448.68421) Full Text: DOI