On the statistical and biological behaviors of nonlinear mixed forest models

  title={On the statistical and biological behaviors of nonlinear mixed forest models},
  author={Yuqing Yang and Shongming Huang},
  journal={European Journal of Forest Research},
This study examined both statistical and biological behaviors of two nonlinear mixed models fitted by the first-order (FO) and first-order conditional expectation (FOCE) methods. The simpler FO method was found to alter the mathematical forms of the base models and produce biologically unreasonable predictions for some subjects. This was not the case for the more complex FOCE method. Since the computations for predicting random parameters and for making subject-specific (SS) predictions were… CONTINUE READING


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