Figure 3
From: Big data would not lie: prediction of the 2016 Taiwan election via online heterogeneous information
Kalman gain for different online signals. The Kalman gain of the Facebook “Like” constitutes the highest proportion but gradually decreases while the Google signal continuously increases. Twitter and the campaign homepages are not indicative signals for the election. The Kalman gains of all the signals converge to steady states approximately one month before the election