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To discourage the intense fluctuations of stock index futures, CFFEX repeatedly altered futures policy and increased investors' transaction costs in 2015. With nonparametric tests, this paper compares the volume effect, volatility effect and price effect between expiration-day and non-expiration day, and then investigates the changes of expiration-day effect before and after the futures' adjustment...
This paper deals with the stochastic point location (SPL) problem which can be described as: a learning mechanism (LM) determines the optimal point on the line and it only receives the stochastic information from the environment, which guides LM the direction it should move. Scholars have proposed various methods to solve this problem, and the latest method hierarchical stochastic searching on the...
With increasing denial of service attacks on network infrastructure, there is an urgent need to develop technique to assess the threat of attacks on network security online. A novel model of security threat assessment relying on several predefined metrics of network performance is proposed to measure the impact of denial of service attacks on service availability in real time. This model applies the...
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