“…Most studies focusing on functional polycentricity rely on commuting or travel data, but also on employment data and firm locations, however, there's a lot more diversity regarding the methods used to evaluate it, though, an interesting alternative is to infer polycentricity from geotagging data (Zhang et al, 2016). From the perspective of interactions between the local administrative areas, provided that sufficient travel and commuting data is available, various network characteristics can be analysed to identify polycentric urban structures (Taylor et al, 2009;Tissandier, Quang and Archambault, 2013;Dadashpoor, Afaghpoor and Allan, 2017). Yet another alternative is the creation of flow maps based on employee home-work location data, however, this is data that is rarely available in most countries (Nielsen and Hovgesen, 2005).…”