【待完善】
NN model
nn.model <- monmlp.fit(as.matrix(train[,-24]), as.matrix(train[,24]),
hidden1=10, n.ensemble=10, monotone=1, bag=TRUE)
pred <- monmlp.predict(x = as.matrix(vali[,-24]),weights = nn.model)
sum(abs(vali$total_cases - pred)) / dim(vali)[1]