The social ties of immigrant communities in the United States

Leveraging Facebook's Advertising Platform to Monitor Stocks of Migrants

“…In the Adverts Manager's documentation, expats are defined as "people whose original country of residence is different from the current country." Despite the lack of documentation, we can infer, based on the literature produced by researchers who work internally at Facebook (Herdagdelen et al 2016), that two factors play a key role in Facebook's estimation of expats. The first is the self-reported "current city" and "hometown" in the list of "places you have lived" that people fill in for their Facebook profile.…”

“…The second is the network structure of friendships (e.g., having at least two Facebook friends in the home country and two Facebook friends in the destination country). Herdagdelen et al (2016), working internally at Facebook, generated estimates of migrants based on the set of variables that we just described. In their publication they provided the ranking of the top 11 immigrant communities in the US on Facebook, according to their country of origin: Mexico, India, Philippines, Puerto Rico, El Salvador, Dominican Republic, Guatemala, Canada, Honduras, Cuba, and Colombia.…”

Fact-checking strategies to limit urban legends spreading in a segregated society

“…However, many attributes or factors that lead to the formation of segregated communities are somehow 'mutable': for example, nodes that join or leave the network can contribute to create new shortest paths to otherwise distant communities, interests change during time and, as a consequence, attention to given topics. On the other hand, segregation has been largely studied (Oka and Wong 2015;Massey and Denton 1993;1987) and observed (Bajardi et al 2015;Herdagdelen et al 2016;Lamanna et al 2018) in urban environments, involving features of human life as language, religion, ethnicity, education, employment and so on. Many of these attributes are 'immutable' , and the topology of the network can be shaped accordingly.…”

Studying Migrant Assimilation Through Facebook Interests

“…After Zagheni and Weber used geo-located Yahoo! e-mail data to estimate international migration flows [14], several platforms have been used to understand the network structure of migration, including Facebook [5] and Google+ [7]. Geo-located Twitter data has proved useful for studying the relationship between internal and international migration [13], as well as short-term mobility versus long-term migration [3,1].…”