方法对比

	Location Quotient	Shift-Share Analysis
领域	经济学	经济学
方法族	Process / pipeline	Process / pipeline
起源年份	1960	1960
提出者	Developed in regional science; codified by Walter Isard	Edgar S. Dunn (Daniel Creamer credited with early use)
类型	Descriptive index of relative regional concentration	Descriptive decomposition of regional growth
开创性文献	Isard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. Cambridge, MA: MIT Press. ISBN: 9780262090032	Dunn, E. S. (1960). A statistical and analytical technique for regional analysis. Papers of the Regional Science Association, 6(1), 97–112.
别名	LQ, Coefficient of Localization, Regional Specialization Ratio	Shift-Share Decomposition, SSA, Esteban-Marquillas Shift-Share, Regional Shift-Share
相关	3	3
摘要	The location quotient (LQ) is a simple descriptive index that measures how concentrated an industry is in a region relative to a larger reference area, usually the nation. It is the ratio of the industry's share of local employment (or output) to its share of national employment. An LQ above one means the region is more specialized in that industry than the nation as a whole; an LQ below one means it is under-represented.	Shift-share analysis is a descriptive technique that decomposes the change in a regional variable — most often sectoral employment — into three additive components: the part attributable to overall national growth, the part attributable to the region's industry mix, and the part attributable to the region's own competitive performance. Formalized by Edgar Dunn in 1960, it answers whether a region grew because the national economy grew, because it specializes in fast-growing industries, or because its industries outperformed (or underperformed) their national counterparts.