Results 1 to 10 of about 163,144 (172)

Sparse Poisson regression via mixed-integer optimization. [PDF]

open access: yesPLoS ONE, 2021
We present a mixed-integer optimization (MIO) approach to sparse Poisson regression. The MIO approach to sparse linear regression was first proposed in the 1970s, but has recently received renewed attention due to advances in optimization algorithms and ...
Hiroki Saishu, Kota Kudo, Yuichi Takano
doaj   +5 more sources

Online Superstructure Optimization for Energy Saving of an Industrial Gas Distribution System [PDF]

open access: yesChemical Engineering Transactions, 2012
Mixed-integer optimization is a common approach to handle decision-making problems. Nevertheless, such an approach still presents certain operational limitations, especially for online superstructures.
M. D‘Isanto   +4 more
doaj   +3 more sources

Optimal Biocompatible Solvent Design by Mixed-integer Hybrid Differential Evolution [PDF]

open access: yesBioautomation, 2008
In this study, a flexible optimization approach is introduced to design an optimal biocompatible solvent for an extractive fermentation process with cell-recycling.
Hou-Chieh Cheng, Feng-Sheng Wang
doaj   +2 more sources

Applications of Stochastic Mixed-Integer Second-Order Cone Optimization

open access: yesIEEE Access, 2022
Second-order cone programming problems are a tractable subclass of convex optimization problems that can be solved using polynomial algorithms. In the last decade, stochastic second-order cone programming problems have been studied, and efficient ...
Baha Alzalg, Hadjer Alioui
doaj   +1 more source

A Survey on Mixed-Integer Programming Techniques in Bilevel Optimization

open access: yesEURO Journal on Computational Optimization, 2021
Bilevel optimization is a field of mathematical programming in which some variables are constrained to be the solution of another optimization problem. As a consequence, bilevel optimization is able to model hierarchical decision processes.
Thomas Kleinert   +3 more
doaj   +1 more source

Exact minimization of the energy losses and the CO2 emissions in isolated DC distribution networks using PV sources

open access: yesDyna, 2021
This paper addresses the optimal location and sizing of photovoltaic (PV) sources in isolated direct current (DC) electrical networks, considering time-varying load and renewable generation curves.
Alexander Molina   +2 more
doaj   +1 more source

A simulation-optimization approach for integrating physical and financial flows in a supply chain under economic uncertainty

open access: yesOperations Research Perspectives, 2023
In the last decade, increasing costs and organizational concerns regarding the funding and allocation of financial resources have led to significant attention being given to financial flow and its effects on planning decisions throughout supply chain ...
Ehsan Badakhshan, Peter Ball
doaj   +1 more source

Prescriptive price optimization using optimal regression trees

open access: yesOperations Research Perspectives, 2023
This paper is concerned with prescriptive price optimization, which integrates machine learning models into price optimization to maximize future revenues or profits of multiple items.
Shunnosuke Ikeda   +3 more
doaj   +1 more source

Online Mixed-Integer Optimization in Milliseconds

open access: yesINFORMS Journal on Computing, 2022
We propose a method to approximate the solution of online mixed-integer optimization (MIO) problems at very high speed using machine learning. By exploiting the repetitive nature of online optimization, we can greatly speed up the solution time. Our approach encodes the optimal solution into a small amount of information denoted as strategy using the ...
Dimitris Bertsimas, Bartolomeo Stellato
openaire   +2 more sources

Information complexity of mixed-integer convex optimization

open access: yesMathematical Programming, 2023
We investigate the information complexity of mixed-integer convex optimization under different types of oracles. We establish new lower bounds for the standard first-order oracle, improving upon the previous best known lower bound. This leaves only a lower order linear term (in the dimension) as the gap between the lower and upper bounds.
Basu, Amitabh   +3 more
openaire   +2 more sources

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