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Population Analytics

Mapping Global Human Mobility

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Led at Boston Children's Hospital. Co-authored a globally comprehensive human-movement typology using anonymized smartphone location data with differential-privacy protections.

300M+ users65% of Earth's populated surface

How it works

01

Aggregation

Billions of GPS location records from mobile apps are consolidated into a unified system.

02

Privacy Processing

Differential-privacy algorithms add calibrated noise to outputs to prevent re-identification.

03

Geospatial Analysis

Movement flows are computed by region using spatial indexing and clustering techniques.

04

Statistical Modeling

Patterns are quantified through models, e.g. power-law decay curves for travel-distance relationships.

05

Data Delivery

Processed metrics are released via public repositories and interactive dashboards for researcher access.

Outcome

Published in Nature Human Behaviour (2020, 146 citations); showed movement declines 40% faster in low-income regions, informing global epidemic modeling.

Citations

Nature paper

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