# Extracting geography from trade data

@article{Li2017ExtractingGF, title={Extracting geography from trade data}, author={Yuke Li and Tianhao Wu and Nicholas F. Marshall and S. Steinerberger}, journal={Physica A-statistical Mechanics and Its Applications}, year={2017}, volume={473}, pages={205-212} }

Understanding international trade is a fundamental problem in economics -- one standard approach is via what is commonly called the "gravity equation", which predicts the total amount of trade $F_ij$ between two countries $i$ and $j$ as $$ F_{ij} = G \frac{M_i M_j}{D_{ij}},$$ where $G$ is a constant, $M_i, M_j$ denote the "economic mass" (often simply the gross domestic product) and $D_{ij}$ the "distance" between countries $i$ and $j$, where "distance" is a complex notion that includes… Expand

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