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A derivative-free trust-region approach for Low Order-Value Optimization problems
Optimization and Control · Submitted 25 Nov 2025
abstract compiled · 2026-10-28 · no language-model review
The authors' main claim Extensive numerical experiments and comparison with existing alternatives show the properties and the efficiency of the proposed approach when solving LOVO problems.
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The abstract, sentence by sentence
The Low Order-Value Optimization (LOVO) problem involves minimizing the minimum among a finite number of function values within a feasible set. LOVO has several practical applications such as robust parameter estimation, protein alignment, portfolio optimization, among others. In this work, we are interested in the constrained nonlinear optimization LOVO problem of minimizing the minimum between a finite number of function values subject to a nonempty closed convex set where each function is a black-box and continuously differentiable, but the derivatives are not available. We develop the first derivative-free trust-region algorithm for constrained LOVO problems with convergence to weakly critical points. Under suitable conditions, we establish the global convergence of the algorithm and also its worst-case iteration complexity analysis. An initial open-source implementation using only linear interpolation models is developed. Extensive numerical experiments and comparison with existing alternatives show the properties and the efficiency of the proposed approach when solving LOVO problems.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The Low Order-Value Optimization (LOVO) problem involves minimizing the minimum among a finite number of function values within a feasible set. | background 1.00 | 0.05 | 0.03 | asserted 1.00 |
| s1 | LOVO has several practical applications such as robust parameter estimation, protein alignment, portfolio optimization, among others. | background 1.00 | 0.05 | 0.02 | asserted 1.00 |
| s2 | In this work, we are interested in the constrained nonlinear optimization LOVO problem of minimizing the minimum between a finite number of function values subject to a nonempty closed convex set where each function is a black-box and continuously differentiable, but the derivatives are not available. | background 0.89 | 0.13 | 0.05 | asserted 0.96 |
| s3 | We develop the first derivative-free trust-region algorithm for constrained LOVO problems with convergence to weakly critical points. | contribution 0.99 | 0.97 | 0.71 | asserted 1.00 |
| s4 | Under suitable conditions, we establish the global convergence of the algorithm and also its worst-case iteration complexity analysis. | result 0.51 | 0.93 | 0.23 | asserted 0.99 |
| s5 | An initial open-source implementation using only linear interpolation models is developed. | method 0.49 | 0.95 | 0.04 | asserted 1.00 |
| s6 | Extensive numerical experiments and comparison with existing alternatives show the properties and the efficiency of the proposed approach when solving LOVO problems. | result 0.93 | 0.95 | 0.43 | asserted 1.00 |
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The paper
Original abstract
The Low Order-Value Optimization (LOVO) problem involves minimizing the minimum among a finite number of function values within a feasible set. LOVO has several practical applications such as robust parameter estimation, protein alignment, portfolio optimization, among others. In this work, we are interested in the constrained nonlinear optimization LOVO problem of minimizing the minimum between a finite number of function values subject to a nonempty closed convex set where each function is a black-box and continuously differentiable, but the derivatives are not available. We develop the first derivative-free trust-region algorithm for constrained LOVO problems with convergence to weakly critical points. Under suitable conditions, we establish the global convergence of the algorithm and also its worst-case iteration complexity analysis. An initial open-source implementation using only linear interpolation models is developed. Extensive numerical experiments and comparison with existing alternatives show the properties and the efficiency of the proposed approach when solving LOVO problems.
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