This paper studies an insurer's optimal investment portfolio under the mean-variance criterion. The financial market consists of a riskless bond and risky asset, latter's volatility is random. We are extending Cox–Ingersoll–Ross (CIR) model to case with jumps, where it modeled by jump-diffusion stochastic differential equation (SDE). use Lévy SDE describe risk process we have, in which extend c...

Big Data and artificial intelligence are used to transform businesses. Social networking sites have given a new dimension online data. media platforms help gather massive amounts of data reach wide variety customers using influence maximization technique for innovative ideas, products services. This paper aims develop deep learning method that can identify the influential users in network. comb...

background: myocardial infarction (mi) is a main cause of death and disability worldwide, whichinvolves a number of genetic, physiopathologic and socio-economic determinants. the aim of thisstudy was to assess the patterns of association between education, wealth and some other risk factorswith non-fatal mi in tehran population.methods: data derived from a second round of large cross-sectional ...