While the ability of the sensor method to detect outbreaks early depends on factors such as online context, the type of phenomenon spreading, and the size of the population, overall, local monitoring is a promising way to monitor contagious processes across global networks.
About the Study:
Six months of data from 2009 Twitter data were analyzed. A group of randomly chosen individuals from Twitter were sampled, along with a randomly chosen group of “friends” of members of this group. This created a control group and a sensor group with a higher degree of centrality.