Calibrations of detterence functions: hyman's method

4 important questions on Calibrations of detterence functions: hyman's method

What is given in hyman's method?

- observed trip production
- observed trip attraction
- cost matrix
- observed mean trip length (MTL)

What is the assumption function?

F(cij)=exp(-acij), a is unknown

How is hyman's method solved?

Using the doubly constrained gravity model, while updating a to match the MTL
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