The latest release of the Business Analyst extension for ArcGIS Pro contains a new tool to help calibrate a huff model. This 2-minute video provides a really nice overview of this tool:
As the video illustrates, you can use this tool to automatically adjust and refine your Huff Model settings to produce more accurate, predictive output. Specifically, the Huff Model Calibration tool will calculate the exponent value for the attractiveness variables and the distance variable used in the Huff Model.
As seen from the example below, the calibration tool requires an existing facility or store layer, customer layer, and a layer with potential sales.
The result of the calibration tool is a file that contains the exponent values for attractiveness variable (e.g. sales) and distance (e.g. driving time).
The exponent values of 0.5062 and -0.9506 (which has been rounded to 4 decimal places) can now be used for running the Huff Model. These exponent values are specific for the input stores and sales potential layers. The default of the Huff Model without calibration is 1 and 1.5, but they are arbitrary values and not based on the input data. The calibrated results will provide a more accurate, predictive model.
Additional information about this new tool can be found in the ArcGIS Pro documentation for Calculate Huff Model Calibration. We’re so happy to share this new capability with you. Please reach out and let us know if you have any questions about this new tool or any other capabilities in ArcGIS Business Analyst.
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