Fine-Grained Urban Functional Region Identification via Mobile App Usage Data

Algorithm 1

Hierarchical clustering: AGNES (AGglomerative NESting).

	Input: App fingerprint data belongs to the same type urban functional regions ;
	cluster distance function ;
	distance threshold value
	Output: Clusters
	fordo
	end
	fordo
	fordo
	;
	end
	end
	Set current number of clusters:
	while the distance of any two clustersdo
	Find the nearest two clusters and
	Union and :
	fordo
	Renumber clusters set to
	end
	Delete the row and the column of the distance matrix ;
	fordo
	;
	end
	end