A general approach to detecting migration events in digital trace data

Guanghua Chi, Fengyang Lin, Guangqing Chi, Joshua Blumenstock

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Empirical research on migration has historically been fraught with measurement challenges. Recently, the increasing ubiquity of digital trace data—from mobile phones, social media, and related sources of ‘big data’—has created new opportunities for the quantitative analysis of migration. However, most existing work relies on relatively ad hoc methods for inferring migration. Here, we develop and validate a novel and general approach to detecting migration events in trace data. We benchmark this method using two different trace datasets: four years of mobile phone metadata from a single country’s monopoly operator, and three years of geo-tagged Twitter data. The novel measures more accurately reflect human understanding and evaluation of migration events, and further provide more granular insight into migration spells and types than what are captured in standard survey instruments.

Original languageEnglish (US)
Article numbere0239408
JournalPloS one
Issue number10 October
StatePublished - Oct 2020

All Science Journal Classification (ASJC) codes

  • General


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