“…In this section, to evaluate the influence of differences in datasets from different months on the robustness of the model in a dynamic environment, we use each month's datasets as a validation of the VITL algorithmand compare it with the conventional machine learning approach and the deep learning approach. We used five conventional machine learning algorithms, SVM [22], KNN [23], RF [24], DT [25], and GNB [26], for comparison, after which they showed the best performance with those in [44] and [45] a baseline neural network comprising two fully connected hidden layers, with 128 and 68 nodes, and five deep learning algorithms CNN [27], C-FNN1, HADNN1 [46] and rrifloc [47] were compared. In figure 5, the DT algorithm shows poor robustness with other conventional machine learning algorithms, such as the GNB algorithm, after the ninth month, although the other conventional machine learning algorithms are slightly better but still start to float more in the ninth month.…”