Results 1 to 10 of about 773,474 (304)

Branch and price for submodular bin packing

open access: yesEURO Journal on Computational Optimization, 2023
The Submodular Bin Packing (SMBP) problem asks for packing unsplittable items into a minimal number of bins for which the capacity utilization function is submodular.
Liding Xu   +3 more
doaj   +5 more sources

Branch-and-Price Solving in G12 [PDF]

open access: yes, 2009
The G12 project is developing a software environment for stating and solving combinatorial problems by mapping a high-level model of the problem to an efficient combination of solving methods. Model annotations are used to control this process.
Brand, Sebastian   +3 more
core   +4 more sources

Temporal Trend and Fluctuation Learning via Enhanced Attention Mamba for Carbon Price Interval Forecasting [PDF]

open access: yesEntropy
Accurate carbon price forecasting is essential for transforming complex carbon trading markets into efficiently managed and stably operating systems. Existing long-term time series forecasting methods struggle to capture the nonlinear and non-stationary ...
Lijun Duan   +5 more
doaj   +2 more sources

Research on Cloud Task Scheduling Algorithm with Conflict Constraints Based on Branch-and-Price

open access: yesApplied Sciences, 2023
The low-energy task scheduling of cloud computing systems is a key issue in the field of cloud computing. Nevertheless, existing works on task scheduling lack consideration of the conflict relationship between tasks and focus on heuristic and other ...
Ning Xie   +3 more
doaj   +1 more source

Scheduling sports leagues using branch- and price

open access: yes, 2016
A single round robin tournament can be described as a league of a set T of n teams (n even) to be scheduled such that each team plays exactly once against each other team and such that each team plays exactly once per period resulting in a set P of n — 1
Briskorn, Dirk, Drexl, Andreas
core   +1 more source

Close-Enough Facility Location

open access: yesMathematics, 2021
This paper introduces the concept of close-enough in the context of facility location. It is assumed that customers are willing to move from their homes to close-enough pickup locations.
Alejandro Moya-Martínez   +2 more
doaj   +1 more source

Solving Linear Integer Models with Variable Bounding

open access: yesForecasting, 2023
We present a technique to solve the linear integer model with variable bounding. By using the continuous optimal solution of the linear integer model, the variable bounds for the basic variables are approximated and then used to calculate the optimal ...
Elias Munapo   +2 more
doaj   +1 more source

A political argument for inefficiency under severe political pressure

open access: yesJournal of Government and Economics, 2023
Who watches the watchmen? In order to examine the role of the governance separation of powers principle in economics, we developed a theoretical model of a structurally failed market with and without political pressure.
Doron Nisani
doaj   +1 more source

Assigning lifetime occupation domains for older Mexicans: MHAS-O*NET linkage protocol

open access: yesSalud Pública de México, 2023
Objective. We developed a MHAS (Mexican Health and Aging Study) and O*NET (Occupational Information Network) linkage to allow global researchers using MHAS data to assign lifetime occupation domains for older Mexicans. Materials and methods.
Chih-Ying Li   +6 more
doaj   +1 more source

A Three-Stage Optimization Method for Assembly Line Balancing Problem

open access: yesIEEE Access, 2020
Considering the characteristics of multimodels production pattern on assembly line, the assembly line balancing problem which is non-deterministic polynomial hard becomes more challenging to complete. In this article, we propose a reformulation of simple
Qidong Yin, Xiaochuan Luo
doaj   +1 more source

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