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Learning Periodic Human Behaviour Models from Sparse Data for Crowdsourcing Aid Delivery in Developing Countries
Proceedings of the 29th Conference on Uncertainty in Artificial Intelligence, PMLR R11:165-174, 2013.
Abstract
In many developing countries, half the popula- tion lives in rural locations, where access to es- sentials such as school materials, mosquito nets, and medical supplies is restricted. We propose an alternative method of distribution (to stan- dard road delivery) in which the existing mo- bility habits of a local population are leveraged to deliver aid, which raises two technical chal- lenges in the areas optimisation and learning. For optimisation, a standard Markov decision pro- cess applied to this problem is intractable, so we provide an exact formulation that takes advan- tage of the periodicities in human location be- haviour. To learn such behaviour models from sparse data (i.e., cell tower observations), we de- velop a Bayesian model of human mobility. Us- ing real cell tower data of the mobility behaviour of 50,000 individuals in Ivory Coast, we find that our model outperforms the state of the art ap- proaches in mobility prediction by at least 25% (in held-out data likelihood). Furthermore, when incorporating mobility prediction with our MDP approach, we find a 81.3% reduction in total delivery time versus routine planning that min- imises just the number of participants in the so- lution path.