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Telecommunications systems have recently undergone significant innovations. These call for suitable statistical models that can properly describe the behaviour of the input traffic in a network. Here we use fractional Brownian motion (FBM) to model cumulative traffic network, thus taking into...
Time series methods and directed acyclic graphs are used to uncover the centre of price discovery in 10 weight/gender classes of feeder and fed cattle from cash markets in Texas, U.S.A. Heavy feeder heifers, animals sitting on a margin of feeding for meat or breeding for new stocks, are weakly...
In industry, most of the process observations are assumed to come from a normal population, but usually we merely want to control the process mean value. It is thus sensible to find control statistics, which are ‘robust’ to monitor the process mean, giving the expected rate of false alarms...
The normal inverse Gaussian (NIG) distribution is a promising alternative for modelling financial data since it is a continuous distribution that allows for skewness and fat tails. There is an increasing number of applications of the NIG distribution to financial problems. Due to the complicated...
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