Simultaneous Search
提出并解决了一类新的“向下递归”静态投资组合选择问题，个体同时从排序的随机选项中选择，每个选择都有成本，适用于学生申请多所大学或企业尝试多种技术等场景。
We introduce and solve a new class of "downward-recursive" static portfolio choice problems. An individual simultaneously chooses among ranked stochastic options, and each choice is costly. In the motivational application, just one may be exercised from those that succeed. This often emerges in practice, such as when a student applies to many colleges or when a firm simultaneously tries several technologies. Copyright The Econometric Society 2006.