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| Input-Output Analysis× | Location Quotient× | |
|---|---|---|
| Field | Economics | Economics |
| Family | Process / pipeline | Process / pipeline |
| Year of origin≠ | 1936 | 1960 |
| Originator≠ | Wassily Leontief | Developed in regional science; codified by Walter Isard |
| Type≠ | Linear inter-industry accounting and impact model | Descriptive index of relative regional concentration |
| Seminal source≠ | Leontief, W. W. (1936). Quantitative input and output relations in the economic system of the United States. The Review of Economics and Statistics, 18(3), 105–125. DOI ↗ | Isard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. Cambridge, MA: MIT Press. ISBN: 9780262090032 |
| Aliases≠ | Leontief Model, Inter-Industry Analysis, I-O Analysis, Input-Output Model | LQ, Coefficient of Localization, Regional Specialization Ratio |
| Related≠ | 4 | 3 |
| Summary≠ | Input-output analysis is a quantitative framework for representing the interdependence between the industries of an economy, introduced by Wassily Leontief in 1936. It records the flows of goods and services between sectors in a transactions table, derives fixed technical coefficients describing how much each industry buys from every other industry per unit of output, and inverts the resulting linear system to trace how an exogenous change in final demand ripples through the entire production structure. | 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. |
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