P.J. Lewi, Spectral map analysis. Analysis of contrasts, especially from log-ratios. Chemom. Intell. Lab. Syst., 5 (1989) 105-116. [Pg.159]

Levi, P.J. Spectral map analysis. Eactorial analysis of contrast, especially from log ratios. Chemometr. InteU. Lah. Syst. 1989, 5, 105-116. [Pg.356]

Hamoir, T. Cuaste Sanchez, F. Bourguignon, B. Massart, D.L. Spectral mapping analysis A method for the characterization of stationary phases. J. Chromatogr. Sci. 1994, 32, 488-498. [Pg.357]

Ivaniuc, O. Ivanciuc, T. Cahrol-Bass, D. Balahan, A.T. Com, D.L. Spectral mapping analysis A method for the comparison of weighting schemes for molecular graph descriptors. Application in quantitative structure-retention relationship models for alkylphenols in gas-hquid chromatography. J. Chem. Inf Comput. Sci. 2000, 40, 732-743. [Pg.357]

The transformation by log double-centering has received various names among which spectral mapping [13], logarithmic analysis [14], saturated RC association model [15], log-bilinear model [16] and spectral map analysis or SMA for short [17]. [Pg.129]

Multivariate methods of data analysis were first applied in chromatography for retention prediction purposes [7. More recently, principal component analysis (PCA), correspondence factor analysis (CFA) and spectral mapping analysis (SMA) have been employed to objectively cla.ssify. stationary phase materials according to the retention [Pg.530]

According to Andersen [12] early applications of LLM are attributed to the Danish sociologist Rasch in 1963 and to Andersen himself. Later on, the approach has been described under many different names, such as spectral map analysis [13,14] in studies of drug specificity, as logarithmic analysis in the French statistical literature [15] and as the saturated RC association model [16]. The term log-bilinear model has been used by Escoufier and Junca [ 17]. In Chapter 31 on the analysis of measurement tables we have described the method under the name of log double-centred principal components analysis. [Pg.201]

Each of the three approaches will be applied in this section to the transformed retention times of the 23 chalcones with eight chromatographic elution methods in Table 31.2. The transformation is defined by the successive operations of logarithms, double-centering and global normalization which is typical for the method of spectral map analysis (SMA) [Pg.142]

© 2019 chempedia.info