We study a multilocation newsvendor network when the only information available on joint distribution of demands are values its mean vector and covariance matrix. adopt distributionally robust model to find inventory levels that minimize worst-case expected cost among distributions consistent with this information. This problem is NP-hard. closed-form tight bound there two locations. under fami...

This paper considers the effect of bans on insurance risk classification utilitarian social welfare. We consider two regimes: full classification, where insurers charge actuarially fair premium for each risk, and pooling, is banned institutional or regulatory reasons, do not attempt to separate classes, but a common all risks. For iso-elastic demand, we derive sufficient conditions higher lower...

With empirical evidence from marine mutual insurance (MMI), an impulse feedback model is constructed to address how information sharing can help increase both the social welfare and the efficiency of operation of the MMI system. Focusing on information sharing, this paper considers the premium policy optimization of a pure (i.e., non-stock consideration) mutual insurance system with a homogeneo...

In practical applications of image classification, methods based on convolutional neural networks are used as standard nowadays. However, the success these is not explained sufficiently from a theoretical point view. For this, statistical model for namely hierarchical max-pooling with additional local pooling, introduced. Here pooling enables to combine parts which have variable relative distan...

In this era of stock speculation, knowledge stocks has become very important. Risk management can help achieve more excellent benefits at the lowest possible cost, while improper use approaches lead to a counterproductive result. pooling and risk sharing are present in many domains, with entirely different definitions. Many people apply purposes these two means from other fields financial area,...

Association tests that pool minor alleles into a measure of burden at a locus have been proposed for case-control studies using sequence data containing rare variants. However, such pooling tests are not robust to the inclusion of neutral and protective variants, which can mask the association signal from risk variants. Early studies proposing pooling tests dismissed methods for locus-wide infe...

A survey of cotton producers was conducted in Mississippi and Texas. The econometric model consists of a multinomial logit model of cotton producers’ choice of marketing techniques. The results indicate that cotton acres positively influence pooling and negatively influence cash sales. Producers willing to incur higher transaction costs in market information systems and training tend to choose ...