Research Article
Fuzzy Investment Portfolio Selection Models Based on Interval Analysis Approach
Table 1
The stock return intervals.
| Stock name | Interval lower limit | Interval upper limit |
| Vanke | 0.005224 | 0.031831 | Konka | −0.00596 | 0.021606 | Victor onward Textile | 0.002509 | 0.031017 | Universe | −0.00717 | 0.026362 | Tellus | −0.03185 | 0.012672 | Shenxin | −0.03593 | 0.02052 | Nonfemet | −0.03978 | 0.010745 | Xinmao S&T | −0.00754 | 0.022664 | INT’L Group | −0.0213 | 0.01444 | Jinlu | −0.0273 | 0.00901 | ZY Environment | −0.01111 | 0.020413 | DaTong Gas | −0.00474 | 0.021312 | Advanced Technology | −0.00708 | 0.024332 | Fujian Electric | −0.00968 | 0.018596 | Sinosteel | −0.01617 | 0.044893 | Huayi Brothers | −0.0378 | 0.022356 | China Merchants Bank | −0.00997 | 0.013047 | Xi’An Aero Engine | −0.0003 | 0.031385 | Ping An | −0.0124 | 0.01055 | Petro China | −0.0207 | −0.0007 |
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