Non-linear methods for multivariate statistical calibration and their use in palaeoecology : a comparison of inverse ( k-Nearest Neighbours , PLS and WA-PLS ) and classical approaches

@inproceedings{Braak1995NonlinearMF,
  title={Non-linear methods for multivariate statistical calibration and their use in palaeoecology : a comparison of inverse ( k-Nearest Neighbours , PLS and WA-PLS ) and classical approaches},
  author={Cajo J. F. ter Braak},
  year={1995}
}
Current environmental problems, such as acid rain and global warming, have greatly increased interest in fossil species assemblages as indicators of the palaeo-environment and thus in quantitative methods for reconstructing environmental variables from species assemblage data. The ensuing multivariate calibration problem appears to be even harder than that of spectroscopic calibration, primarily because the basic model is unimodal (Shelford's law of tolerance) instead of being linear (Beer's… CONTINUE READING
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