A Theory of Input-Output Architecture

作者：Oberfield Ezra^*

来源：Econometrica, 2018, 86(2): 559-589.

DOI：10.3982/ECTA10731

• Networks
• productivity
• supply chains
• size distribution
• input-output structure
• economic growth
• ideas

Individual producers exhibit enormous heterogeneity in many dimensions. This paper develops a theory in which the network structure of productionwho buys inputs from whomforms endogenously. Entrepreneurs produce using labor and exactly one intermediate input; the key decision is which other entrepreneur's good to use as an input. Their choices collectively determine the economy's equilibrium input-output structure, generating large differences in size and shaping both individual and aggregate productivity. When the elasticity of output to intermediate inputs in production is high, star suppliers emerge endogenously. This raises aggregate productivity as, in equilibrium, more supply chains are routed through higher-productivity techniques.

• 出版日期2018-3