Zhang, Hong-Ying; Zhang, Wen-Xiu; Wu, Wei-Zhi On characterization of generalized interval-valued fuzzy rough sets on two universes of discourse. (English) Zbl 1209.68552 Int. J. Approx. Reasoning 51, No. 1, 56-70 (2009). MSC: 68T37 68T30 PDFBibTeX XMLCite \textit{H.-Y. Zhang} et al., Int. J. Approx. Reasoning 51, No. 1, 56--70 (2009; Zbl 1209.68552) Full Text: DOI
Zhou, Lei; Wu, Wei-Zhi; Zhang, Wen-Xiu On intuitionistic fuzzy rough sets and their topological structures. (English) Zbl 1187.03044 Int. J. Gen. Syst. 38, No. 6, 589-616 (2009). MSC: 03E72 54A40 68T37 PDFBibTeX XMLCite \textit{L. Zhou} et al., Int. J. Gen. Syst. 38, No. 6, 589--616 (2009; Zbl 1187.03044) Full Text: DOI
Zhou, Lei; Wu, Wei-Zhi; Zhang, Wen-Xiu On characterization of intuitionistic fuzzy rough sets based on intuitionistic fuzzy implicators. (English) Zbl 1162.03317 Inf. Sci. 179, No. 7, 883-898 (2009). MSC: 03E72 PDFBibTeX XMLCite \textit{L. Zhou} et al., Inf. Sci. 179, No. 7, 883--898 (2009; Zbl 1162.03317) Full Text: DOI
Li, Tong-Jun; Leung, Yee; Zhang, Wen-Xiu Generalized fuzzy rough approximation operators based on fuzzy coverings. (English) Zbl 1186.68464 Int. J. Approx. Reasoning 48, No. 3, 836-856 (2008). MSC: 68T37 03B52 54A40 PDFBibTeX XMLCite \textit{T.-J. Li} et al., Int. J. Approx. Reasoning 48, No. 3, 836--856 (2008; Zbl 1186.68464) Full Text: DOI
Li, Tong-Jun; Zhang, Wen-Xiu Rough fuzzy approximations on two universes of discourse. (English) Zbl 1128.68099 Inf. Sci. 178, No. 3, 892-906 (2008). MSC: 68T37 PDFBibTeX XMLCite \textit{T.-J. Li} and \textit{W.-X. Zhang}, Inf. Sci. 178, No. 3, 892--906 (2008; Zbl 1128.68099) Full Text: DOI
Xu, Wei-Hua; Zhang, Wen-Xiu Measuring roughness of generalized rough sets induced by a covering. (English) Zbl 1127.68106 Fuzzy Sets Syst. 158, No. 22, 2443-2455 (2007). MSC: 68T37 03E72 PDFBibTeX XMLCite \textit{W.-H. Xu} and \textit{W.-X. Zhang}, Fuzzy Sets Syst. 158, No. 22, 2443--2455 (2007; Zbl 1127.68106) Full Text: DOI
Wei, Li-Li; Zhang, Wen-Xiu Probabilistic rough sets characterized by fuzzy sets. (English) Zbl 1074.68073 Int. J. Uncertain. Fuzziness Knowl.-Based Syst. 12, No. 1, 47-60 (2004). MSC: 68T37 03E72 94A17 PDFBibTeX XMLCite \textit{L.-L. Wei} and \textit{W.-X. Zhang}, Int. J. Uncertain. Fuzziness Knowl.-Based Syst. 12, No. 1, 47--60 (2004; Zbl 1074.68073) Full Text: DOI
Wu, Wei-Zhi; Zhang, Wen-Xiu Constructive and axiomatic approaches of fuzzy approximation operators. (English) Zbl 1071.68095 Inf. Sci. 159, No. 3-4, 233-254 (2004). MSC: 68T37 03E72 PDFBibTeX XMLCite \textit{W.-Z. Wu} and \textit{W.-X. Zhang}, Inf. Sci. 159, No. 3--4, 233--254 (2004; Zbl 1071.68095) Full Text: DOI
Wu, Wei-Zhi; Mi, Ju-Sheng; Zhang, Wen-Xiu Generalized fuzzy rough sets. (English) Zbl 1019.03037 Inf. Sci. 151, 263-282 (2003). MSC: 03E72 PDFBibTeX XMLCite \textit{W.-Z. Wu} et al., Inf. Sci. 151, 263--282 (2003; Zbl 1019.03037) Full Text: DOI
Wu, Wei-Zhi; Zhang, Wen-Xiu Neighborhood operator systems and approximations. (English) Zbl 1019.68109 Inf. Sci. 144, No. 1-4, 201-217 (2002). MSC: 68T37 PDFBibTeX XMLCite \textit{W.-Z. Wu} and \textit{W.-X. Zhang}, Inf. Sci. 144, No. 1--4, 201--217 (2002; Zbl 1019.68109) Full Text: DOI