差分—等级依赖效用模型研究

等级依赖效用模型在决策权重设置上存在理论缺陷;差分-等级依赖效用模型在有限理性假设下,考虑结果差分变化对决策权重的影响,提出基于差分的决策权重与概率权重的组合权重控制机制,可克服等级依赖效用模型的缺陷;针对差分-等级依赖效用模型的检验表明模型可很好解释拆分效应;差分-等级依赖效用模型保持了等级依赖效用模型的理论框架,可对人们的风险决策行为做出更好的解释和预测.

Difference-based Rank-Dependent Expected Utility Model

There is a defect on the ration of decision weighting in RDEU model.DRDEU,under the hypothesis of rounded rationality,considering the effect of difference on decision weight,put forward a kind of difference-based decision weight control mode,which can overcome RDEU's defect;the test of the new model shows that it can explain eventsplitting effect.D-RDEU which keeps the RDEU's fundamental frame can offer people a better explain and predict for risk decision-making behavior.