A FLEXIBLE GRAVITY-OPPORTUNITIES MODEL FOR TRIP DISTRIBUTION

WILLSMICHAEL J.

REVISTA DE DOCUMENTACION ADMINISTRATIVA, n.º 2/1986, pág. 89

I. INTRODUCTION.- II. DEFINITIONS.- III. SPECIFICATION OF THE OPPORTUNITY FUNCTION.- IV. STRUCTURE OF THE PROPORTIONALITY FACTOR.- V. TRIP DISTRIBUTION MODELS.- VI. THE IIA AXIOM AND THE GO MODEL.- VII. CASES WITH ESTIMATED O AND D.- VIII. TESTING THE GO MODEL.- IX. CONCLUSION.-