Figure 4
From: Using Baidu Search Index to Predict Dengue Outbreak in China
The regression tree modeling the hierarchical relationship between weekly autochthonous DF incidence and Baidu search query data in Guangzhou and Zhongshan, China between 1 January 2010 and 31 December 2016.
(a) The regression tree in Guangzhou; (b) The regression tree in Zhongshan. The regression tree showed the threshold values, mean weekly autochthonous DF incidence rate, N is the total week count of occurrence of DF outbreaks.
