Big Data and Business Analytics

186  •  Big Data and Business Analytics

feature, and the solid line is our method of choice that learns to predict

future alerts from multiple dynamical characteristics of the observed

vibrations. At the 50 percent recall rate, which is when half of all actual

exceedences recorded aer 10 and before 40 ight hours from now are

correctly predicted by the algorithm, almost 50 percent of the early warn-

ings are correct (truly positive). is accuracy is about 2.5 times higher

than that of an alternative that simply leverages the sequential character

of occurrences of the vibration exceedences. e utility of the proposed

machine- learning approach ...