Joint use of attribute importance rankings and non-attendance data in choice experiments
利用黎巴嫩食品安全认证偏好数据，研究了在离散选择实验中联合使用属性非关注和重要性排序数据的方法，发现两者结合能更好估计消费者效用。
The joint and alternative uses of attribute non-attendance and importance ranking data within discrete choice experiments are investigated using data from Lebanon examining consumers’ preferences for safety certification in food. We find that both types of information; attribute non-attendance and importance rankings, improve estimates of respondent utility. We introduce a method of integrating both types of information simultaneously and find that this outperforms models where either importance ranking or non-attendance data are used alone. As in previous studies, stated non-attendance of attributes was not found to be consistent with respondents having zero marginal utility for those attributes