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Dynamic Relationships Among U.S. Wheat-Related Markets: Applying Directed Acyclic Graphs to a Time Series Model

Published online by Cambridge University Press:  28 April 2015

Ronald A. Babula
Affiliation:
Agriculture and Forest Products Division, United States International Trade Commission, Washington, DC
David A. Bessler
Affiliation:
Department of Agricultural Economics, Texas A&M University, College Station, TX
Warren S. Payne
Affiliation:
Agriculture and Forest Products Division, United States International Trade Commission, Washington, DC

Abstract

Using advanced methods of directed acyclic graphs with Bernanke structural vector autoregression models, this article extends recent econometric research on quarterly U.S. markets for wheat and wheat-based value-added products downstream. Analyses of impulse response simulations and forecast error variance decompositions provide updated estimates of market elasticity parameters that drive these markets, and updated policy-relevant information on how these quarterly markets run and dynamically interact. Results suggest that movements in wheat and downstream wheat-based markets strongly influence each other, although most of these effects occur at the longer-run horizons beyond a single crop cycle.

Type
Articles
Copyright
Copyright © Southern Agricultural Economics Association 2004

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