| Summary: | 碩士 === 國立成功大學 === 交通管理(科學)學系 === 81 === The disaggregate choice models that took threshold into
consideration can be separated into two groups. One assumed
that thresholds were in the form of acceptable level. The
other assumed they were in the form of indifference level. In
the literature, the acceptable threshold models were able to
deal with multi-choice problems, while the indifference
threshold models were generally dealing with binary choice
problems. This research tried to build threshold of
indifference models that were able to deal with multi-choice
problems. The level of indifference threshold were expressed
as both utility(attribute) ratio and part of utility(
attribute). The effect of travel distance on the level of
indifference threshold were investigated. Using stated
preference data collected in the Taiwan area for the
intercity travel, models with multinomial logit form were
estimated. The mojor findings were: 1.The explanatory
abilities of all indifference threshold models were better
than those of traditional multinomial logit models. 2.The level
of indifference threshold would tend to increase following the
increase of travel distance. 3.The forms (ratio or constant)
of indifference threshold did not have significant effect on
results. 4.The level of indifference threshold were in the
range of 20%-30% of utility.
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