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For the deficiency of the incidence model, the incidence model based on the included angle of vectors is presented and is extended to the panel data. In order to describe the incidence between the sequences, which is projected to n-dimensional vector. The included angle of vectors reacts the difference of the sequences in similarity. The incidence model based on the included angle of vectors is defined,...
According to some problems in the existing relational degree models for panel data, combining the space vector projection knowledge, the new relational coefficient formula is put forward. Therefore, the panel data is projected to space vector series firstly. Then, the relational coefficient formula is detailed described, and the properties are also discussed. The projection relational degree model...
Grey relational degree mainly reflects the geometric similarity of data series. The panel data is regarded as the sample matrix series in this paper. The matrix series is plunged into the space rectangular coordinate system. The sample data extend to the discrete curved surface that consists of the triangle plane. This paper constructs the gray relational coefficient using the angle between the planes,...
Curvature reflects the size of bending degree of curve. In this paper, we put forward a new relational degree model based on curvature of the two series. The new model satisfies the parallel property and uniform property. It is consistent with the actual situation by comparison to the existing relational models. At the end, we give a case in order to validate the new model.
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