Patterns of Regional Travel Behavior: An Analysis of Japanese Hotel   Reservation Data
  This study considers the availability of room opportunities collected from a Japanese hotel booking site. We empirically analyze the daily number of room opportunities for four areas. To determine the migration trends of travelers, we discuss a finite mixture of Poisson distributions and the EM-algorithm as its parameter estimation method. We further propose a method to infer the probability of opportunities existing for each observation. We characterize demand-supply situations by means of relationship between the averaged room prices and the probability of opportunity existing. 
Aki-Hiro Sato
physics.data-an physics.soc-ph