Results 31 to 40 of about 164,719 (284)

A decomposition approach for integrated locomotive scheduling and driver assignment in rail freight transport

open access: yesEURO Journal on Transportation and Logistics
In this work, we consider the integrated problem of locomotive scheduling and driver assignment in rail freight companies. Our aim is to compute an optimal simultaneous assignment of locomotives and drivers to the trains listed in a given order-book ...
Andreas Bärmann   +2 more
doaj   +1 more source

Solving nonlinear optimization problems with bipolar fuzzy relational equation constraints

open access: yesJournal of Inequalities and Applications, 2016
This paper considers the problem of minimizing a nonlinear objective function subject to a system of bipolar fuzzy relational equations with max- T L $T_{L}$ composition, where T L $T_{L}$ is the Łukasiewicz triangular norm.
Jian Zhou   +3 more
doaj   +1 more source

Techno-economic performance analysis in a nanogrid with Hybrid Renewable Energy Sources using classical optimization technique

open access: yesEnergy Reports, 2021
Optimization algorithms are tools used in the planning and operations of renewable energy-based distributed power systems. Mixed integer linear programming as a classical optimization method is considered in the literature for sizing nanogrid systems due
Gourab Das, M. De, K.K. Mandal
doaj   +1 more source

Optimization of multi-energy grid for smart stadiums based on improved mixed integer linear algorithm

open access: yesEnergy Reports, 2022
Due to the relatively large uncertainty and high cost of the power generation of the multi-energy power grid system, the power grid optimization scheduling with these problems as the object of the solution needs to take more targeted optimization ...
Yikai Lin, Xiaojun Tang, Xiaodong Fan
doaj   +1 more source

The Triangle Closure is a Polyhedron [PDF]

open access: yes, 2013
Recently, cutting planes derived from maximal lattice-free convex sets have been studied intensively by the integer programming community. An important question in this research area has been to decide whether the closures associated with certain ...
Basu, Amitabh   +2 more
core   +1 more source

A Heuristic Algorithm Based on Line-up Competition and Generalized Pattern Search for Solving Integer and Mixed Integer Non-linear Optimization Problems

open access: yesLatin American Journal of Solids and Structures
The global optimization of integer and mixed integer non-linear problems has a lot of applications in engineering. In this paper a heuristic algorithm is developed using line-up competition and generalized pattern search to solve integer and mixed ...
Behrooz Shahriari   +3 more
doaj   +1 more source

An Improved DA-PSO Optimization Approach for Unit Commitment Problem

open access: yesEnergies, 2019
Solving the Unit Commitment problem is an important step in optimally dispatching the available generation and involves two stages—deciding which generators to commit, and then deciding their power output (economic dispatch).
Sirote Khunkitti   +4 more
doaj   +1 more source

Research on Hyper-Parameter Optimization of Activity Recognition Algorithm Based on Improved Cuckoo Search

open access: yesEntropy, 2022
Activity recognition methods often include some hyper-parameters based on experience, which greatly affects their effectiveness in activity recognition.
Yu Tong, Bo Yu
doaj   +1 more source

Benchmarks for Current Linear and Mixed Integer Optimization Solvers

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2015
Linear programming (LP) and mixed integer linear programming (MILP) problems belong among very important class of problems that find their applications in various managerial consequences.
Josef Jablonský
doaj   +1 more source

Lifting Linear Extension Complexity Bounds to the Mixed-Integer Setting

open access: yes, 2017
Mixed-integer mathematical programs are among the most commonly used models for a wide set of problems in Operations Research and related fields. However, there is still very little known about what can be expressed by small mixed-integer programs.
Cevallos, Alfonso   +2 more
core   +1 more source

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