Results 21 to 30 of about 326 (78)

A case study of Consistent Vehicle Routing Problem with Time Windows

open access: yes, 2020
We develop a heuristic for the Consistent Vehicle Routing Problem with Time Windows (ConVRPTW), which is motivated by a real-world application at a food company's distribution center.
Lespay, Hernán, Suchan, Karol
core   +1 more source

Accounting for rainfall and the length of growing season in technical efficiency analysis [PDF]

open access: yes, 2020
The physical environment of farming systems is rarely considered when conducting farm level efficiency analysis, which is likely to lead to bias of performance measurements based on benchmarking methods such as Data Envelopment Analysis (DEA).
Areal, Francisco José   +1 more
core   +1 more source

A new distributionally robust reward-risk model for portfolio optimization

open access: yesOpen Mathematics
A new distributionally robust ratio optimization model is proposed under the known first and second moments of the uncertain distributions. In this article, both standard deviation (SD) and conditional value-at-risk (CVaR) are used to measure the risk ...
Zhou Yijia, Xu Lijun
doaj   +1 more source

Multiattribute prediction of terrain stability above underground mining operations [PDF]

open access: yes, 2011
This paper is dedicated to the problem of stability prediction of the terrain above underground mining operations. After the initial introduction to the problem, then the short analysis of the model approaches used to solve it, and giving the ...
Gajić Grozdana   +5 more
core   +1 more source

VaR as the CVaR sensitivity : applications in risk optimization [PDF]

open access: yes, 2016
VaR minimization is a complex problem playing a critical role in many actuarial and financial applications of mathematical programming. The usual methods of convex programming do not apply due to the lack of sub-additivity.
Balbás, Alejandro   +2 more
core   +4 more sources

Higher-order circular intuitionistic fuzzy time series forecasting methodology: Application of stock change index

open access: yesDemonstratio Mathematica
This article presents a higher-order circular intuitionistic fuzzy time series forecasting method for predicting the stock change index, which is shown to be an improvement over traditional time series forecasting methods.
Ashraf Shahzaib   +4 more
doaj   +1 more source

A coordination mechanism with fair cost allocation for divergent multi-echelon inventory systems [PDF]

open access: yes, 2009
This paper is concerned with the coordination of inventory control in divergent multiechelon inventory systems under periodic review and decentralized control. All the installations track echelon inventories. Under decentralized control the installations
Timmer, Judith
core   +2 more sources

A Class of Bandit Problems Yielding Myopic Optimal Strategies [PDF]

open access: yes, 1992
We consider the class of bandit problems in which each of the n ≧ 2 independent arms generates rewards according to one of the same two reward distributions, and discounting is geometric over an infinite horizon. We show that the dynamic allocation index
Banks, Jeffrey S.   +1 more
core   +1 more source

Algorithm selection model based on fuzzy multi-criteria decision in big data information mining

open access: yesDemonstratio Mathematica
In the era of big data, efficient classification of rapidly growing data volumes is a critical challenge. Traditional algorithms often fall short in handling the scale and complexity of big data, leading to inefficiencies in classification accuracy and ...
He Qinling, Zhang Wei
doaj   +1 more source

Circular n,m-rung orthopair fuzzy sets and their applications in multicriteria decision-making

open access: yesDemonstratio Mathematica
The circular Pythagorean fuzzy set is an expansion of the circular intuitionistic fuzzy set (CIFS), in which each component is represented by a circle.
Alshammari Ibtesam, Ibrahim Hariwan Z.
doaj   +1 more source

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