This article examines the career of American economist Robert Dorfman (1916-2002), marked by pioneering work on linear programming in the 1950s, interdisciplinary research on water management in the 1960s, and contributions to environmental economics in the 1970s. It identifies his main...

We develop and implement methods for determining whether relaxing sparsity constraints on portfolios improves the investment opportunity set for risk-averse investors. We formulate a new estimation procedure for sparse second-order stochastic spanning based on a greedy algorithm and Linear...

This article examines the career of American economist Robert Dorfman (1916–2002), marked by pioneering work on linear programming in the 1950s, interdisciplinary research on water management in the 1960s, and contributions to environmental economics in the 1970s. It identifies his main...

We develop and implement methods for determining whether relaxing sparsity constraints on portfolios improves the investment opportunity set for risk-averse investors. We formulate a new estimation procedure for sparse second-order stochastic spanning based on a greedy algorithm and Linear...