Relevance of Context for the Temporal Completion of Call Detail Record

Abstract : Call Detail Records (CDRs) are an important source of information in the study of different aspects of human mobility. However, their utility is often limited by spatio-temporal sparsity. In this paper, we first evaluate the effectiveness of CDRs in measuring relevant mobility features. We then investigate whether the information of user's instantaneous whereabouts provided by CDRs enables us to estimate positions over longer time spans. Our results confirm that CDRs ensure a good estimation of radii of gyration and important locations, yet they lose some location information. Most importantly, we show that temporal completion of CDRs is straightforward and efficient: thanks to the fact that they remain fairly static before and after mobile communication activities, the majority of users' locations over time can be accurately inferred from CDRs. Finally, we observe the importance of user's context, i.e., of the size of the current network cell, on the quality of the CDR temporal completion.
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https://hal.inria.fr/hal-01393364
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Submitted on : Monday, November 7, 2016 - 12:43:22 PM
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Guangshuo Chen, Sahar Hoteit, Aline Carneiro Viana, Marco Fiore, Carlos Sarraute. Relevance of Context for the Temporal Completion of Call Detail Record. [Research Report] RT-0482, INRIA Saclay. 2016, pp.14. ⟨hal-01393364⟩

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