Fifty years of portfolio optimization
这篇综述回顾了投资组合优化五十年的发展，涵盖金融资产和研发项目等不同领域的资源分配问题，并指出未来研究方向，适合运筹学和金融领域的研究者快速了解该领域全貌。
The allocation of resources to alternative investment opportunities is one of the most important decisions organisations and individuals face. These decisions can be guided by building and solving portfolio optimization models that capture the salient aspects of the investment problem, including decision-makers’ preferences, multiple objectives, and decision opportunities over the planning horizon. In this paper, we give a historically grounded overview of portfolio optimization which, as a field within operational research with roots in finance, is vast thanks to many decades of research and the huge diversity of problems that have been tackled. In particular, we provide a unified and therefore unique treatment that covers the full breadth of portfolio optimization problems, including, for instance, the allocation of resources to financial assets and the selection of indivisible assets such as R&D projects. We also identify opportunities for future methodological and applied research, hoping to inspire researchers to contribute to the growing field of portfolio optimization.