A New Linear Programming Approach to Bond Portfolio Management: A Comment
通过分析Ronn（1987）的对偶问题，提供了一个检验单一边际投资者类别假设的强有力且易解释的方法，并修正了Ronn原文中的一个错误。
An analysis of the dual problem described by Ronn (1987) reveals that it provides a powerful and easily interpretable test for the hypothesis of a single class of marginal investors, including models of equilibrium based on a “representative tax bracket.” When Ronn's empirical tests are interpreted via the dual, they lend additional support to his conclusions in providing a strong rejection of the representative tax bracket hypothesis. A valid dual LP used to test the hypothesis can be obtained with fewer assumptions than Ronn's primal; in addition, a minor error in Ronn's presentation of the dual is corrected.