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Qingzhi Zhang
Information about the author Qingzhi Zhang will soon be added to the site.
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2 papers
in total
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Solving non-linear portfolio optimization problems with interval analysis
2015
Estimation errors or uncertainities in expected return and risk measures create...
Energy efficiency and productivity change of China’s iron and steel industry: Accounting for undesirable outputs
2013
This paper used data from 50 enterprises in China’s iron and steel industry to...
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