Marginal risk represents the risk contribution of an individual asset to the risk of the entire portfolio. In this paper,we investigate the portfolio selection
It was planned to build 36 million units of social welfare housing during the twelve-five2011-2015 in China.This paper introduces the estimation of owner occupi
We consider a newsvendor problem with price-dependent demand,in either additive or multiplicative format.The newsvendor has two modes of purchasing:regular orde