Immigrant community integration in world cities

Fabio Lamanna1, Maxime Lenormand2, María Henar Salas-Olmedo3, Gustavo Romanillos3, Bruno Gonçalves4 and José J. Ramasco1

1Instituto de Física Interdisciplinar y Sistemas Complejos IFISC (CSIC-UIB), Palma de Mallorca, Spain.
2Irstea, UMR TETIS, 500 rue Francois Breton, FR-34093 Montpellier, France.
3Departamento de Geografía Humana, Facultad de Geografía e Historia, Universidad Complutense de Madrid, 28040, Madrid, Spain.
4Center for Data Science, New York University, New York, 10011 NY, USA.

(March 2018)

As a consequence of the accelerated globalization process, today major cities all over the world are characterized by an increasing multiculturalism. The integration of immigrant communities may be affected by social polarization and spatial segregation. How are these dynamics evolving over time? To what extent the different policies launched to tackle these problems are working? These are critical questions traditionally addressed by studies based on surveys and census data. Such sources are safe to avoid spurious biases, but the data collection becomes an intensive and rather expensive work. Here, we conduct a comprehensive study on immigrant integration in 53 world cities by introducing an innovative approach: an analysis of the spatio-temporal communication patterns of immigrant and local communities based on language detection in Twitter and on novel metrics of spatial integration. We quantify the "Power of Integration" of cities -their capacity to spatially integrate diverse cultures- and characterize the relations between different cultures when acting as hosts or immigrants.