##  [Gravity Model](/gravity-model) 

  ##  [Gravity Model](https://health.quantumdictionary.io/gravity-model-0) 

  

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**Health & Life Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A spatial-interaction model that predicts aggregate movement or flow between two locations as a function that increases with the locations' sizes (e.g., population, herd size, economic mass) and decreases with distance or movement cost; typically parameterized by attraction coefficients and a distance-decay function to estimate relative rates of movement, contact probability, or trade between site