Urban Economic Structures as Multidimensional Networks: A Complex Systems Framework for Analyzing Economic Development Trajectories

Table 1

Summary of curated data and their hierarchical structures.

MSA data type	Hierarchy level	Unique codes
Occupations (O)	Major	22
	Minor	94
	Broad	450
	Detailed	781
Industries (I)	2-digit NAICS	20
	3-digit NAICS	92
	4-digit NAICS	304
College degrees (D)	acs1	6
	acs2	16
	cip2	38
	Detailed	174
Patent technology codes (T)	Section	10
	Class	129
	Subclass	665