Research Paper Volume 14, Issue 18 pp 7206—7222

Psychological factors substantially contribute to biological aging: evidence from the aging rate in Chinese older adults


Figure 3. Density map of deep neural network predictions in three sets. The training set (A) was used to tune the neural network in a cross-validated manner, healthy samples from the test set (B) were used for verification, and the discovery set (C) contains only people with health conditions to explore cases of accelerated aging. The color bars mark continuous areas containing the same number of people. MAE stands for mean absolute error, R2 stands for coefficient of determination.