Of all the fuzzy intervening opportunity models, this one is most explicitly designed to predict home-based shopping trips:
“A fuzzy intervening opportunity model to predict home-based shopping trips.” Shahriar Afandizadeh [pictured here], Seyed Mehdi Yadi Hamedani, Canadian Journal of Civil Engineering, 2012, 39:(2), 203-222, The authors are at the School of Civil Engineering, Iran University of Science and Technology.
(Thanks to investigator Tom Gill for bringing this to our attention.)