Fig. 12From: Deriving amplification factors from simple site parameters using generalized regression neural networks: implications for relevant site proxiesProgressive reduction in the standard deviation of residuals for all GRNN with the number of explanatory site proxies. As listed in Table 5, a given number of site proxies are associated with many different models, except for the 0 proxy case (initial variability) and “all proxies” case (see text for further details). a RP–RF (top), b NP–RF (middle), and c TP–RF (bottom)Back to article page