Target customer positioning is the first step for enterprises to develop market strategy. After completion of user positioning, through analysis specific groups, we can accurately know consumption habits and thinking process users, which will bring great help precision marketing businesses reduce operating costs. This paper focuses on using RFM model Chinese mobile phone dealer find their targe...

Target selection in direct marketing is an important data mining problem for which several modeling techniques can be used. Several data mining techniques have been applied in the last years to target selection. Logistic regression, neural networks, decision trees and fuzzy modeling methods are the most utilized techniques. However, they have never been explicitly compared up to know. This pape...

Spatial discretization of the domain and/or boundary conditions prevents application of many numerical techniques to physical problems with time-varying geometry and boundary conditions. By contrast, the R-functions method (RFM) for solving boundary and initial value problems discretizes not the domain but the underlying functional space, while the prescribed boundary conditions are satisfied e...

A pattern descriptor invariant to rotation, scaling, translation (RST), and robust to additive noise is proposed by using the Radon, Fourier, and Mellin transforms. The Radon transform converts the RST transformations applied on a pattern into transformations in the radial and angular slices of the Radon transform data. These beneficial properties of the Radon transform make it an useful interm...

This paper presents and compares different modifications made to the ComplexRF optimization algorithm with the aim of improving its performance for computationally expensive models with few variables. The modifications reduce the required number of objective function evaluations by creating and using surrogate models of the objective function iteratively during the optimization process. The cho...

Retained fetal membranes (RFM) is a frequent postpartum disorder in cattle causing considerable economic losses, and common indication for antibiotic (AB) administration. There controversy with regard to the treatment of RFM, scientific recommendations are often conflict current legislation on AB use practical routines field. The aim this study was assess therapeutic approaches RFM by Belgian r...

Methyltransferases (MTases) form a major class of tRNA-modifying enzymes needed for the proper functioning of tRNA. Recently, RNA MTases from the TrmN/Trm14 family that are present in Archaea, Bacteria and Eukaryota have been shown to specifically modify tRNA(Phe) at guanosine 6 in the tRNA acceptor stem. Here, we report the first X-ray crystal structures of the tRNA m(2)G6 (N(2)-methylguanosin...