Time series prediction has been studied for decades due to its potential in a wide range of applications. As one the most popular technical indicators, moving average summarizes overall changing patterns over past period and is frequently used predict future trend time series. However, traditional indicators are calculated by averaging data with equal or predefined weights, ignore subtle differ...

in this article, the effectiveness of eight different technical indexes including simple moving average, weighted moving average, exponential moving average, relative strength, commodity channel, stochastic, money flow and demand are examined by comparison between indexes returns with buy and hold returns. the results shows the return of buy and hold strategy is more than technical indexes in t...

To enlarge the capacity of the hidden secret information and to provide an imperceptible stego-image for human vision, a novel steganographic approach using tri-way pixel-value differencing (TPVD) is proposed in this paper. To upgrade the hiding capacity of original PVD method referring to only one direction, three different directional edges are considered and effectively adopted to design the...

An exact form of the local Whittle likelihood is studied with the intent of developing a general-purpose estimation procedure for the memory parameter (d) that does not rely on tapering or differencing prefilters. The resulting exact local Whittle estimator is shown to be consistent and to have the same N(0, 1 4 ) limit distribution for all values of d if the optimization covers an interval of ...

1Department of Communicable Disease Control and Prevention, Jämtland County Council, Östersund, Sweden; 2Department of Clinical Microbiology, Unit of Clinical Research CenterÖstersund, Umeå University, Umeå, Sweden; 3Centre of Registers in Northern Sweden, Umeå University, Umeå, Sweden; 4Swedish Health Care Direct 1177, Jämtland County Council, Östersund, Sweden; 5Department of Clinical Microbi...

This position paper provides an interim summary on the goals and current state of our ongoing research project on semantic model differencing for software evolution. We describe the basics of semantic model differencing, give two examples from our recent work, and discuss future challenges in taking full advantage of the potential of semantic differencing techniques in the context of models’ ev...