For this problem,an improved algorithm, called relative principal component analysis(RPCA),is proposed by introducing some new concepts,such as relative transform(RT),relative principal components(RPCs),"rotundity"scatter and so on.

Fault diagnosis in industry process based on relative transformation principal component analysis

Moreover,a geometric model of the relative cognitive law is established via relative transformation and is then used to improve SVM.

To solve the problem,the relative transformation on the original data space is proposed by modeling the cognitive relati.

A relativistic transformation of generalized coordinates is discussed and it is found that the first law of thermodynamics and the equation of state of an ideal gas are invariant with respect to the relativistic transformation of generalized coordinates, so that the existence of relativistic transformation of generalized coordinates is reasonable.

The phase velocity and group velocity of electromagnetic waves in moving media are derived by relativistic transformation of electromagnetic waves propagation vectors between two inertial frames and their relation and difference are discussed.

Meanwhile,another way is given to deduce the relation of relativistic transformation of media polarizationmagnetization field vector quantity P and M.

Applying the radar technology to estimate relative change of soil moisture in vegetated area;

Warhead charge pore model was built by the ANSYS software,and transformation characteristic of spherical pore was numerical simulated with solid-liquid coupling method of LS-DYNA,and the effect of relative change of pore size on launching safety,he effects of pore size,pore position and mechanical character of charge on the relative change of pore size were studied.

The calculation of relative variation of the negative feedback amplifier by differential method results in some errors under certain condition,so there was certain limitation in this method.