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Hybrid differential evolutionary strawberry algorithm for real-parameter optimization problems
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Bellwether Publishing, Ltd.
, 2021 , Article)
Evolutionary algorithms (EAs) is a family of population-based nature optimization methods. In contrast to classical optimization techniques, EAs provide a set of approximated solutions for different test suites of optimization ...
Calibration of the double Heston model and an analytical formula in pricing American put option
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Elsevier B.V.
, 2021 , Article)
This paper proposes a novel approach to pricing of American put option under double Heston model. We develop an analytical solution to the double Heston partial differential equation (double Heston PDE) using the equivalent ...
Robust index-tracking and enhanced index-tracking in portfolio optimization
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Ascociacion Internacional de Economia Aplicada
, 2020 , Article)
We study index-tracking and enhanced index-tracking problems in portfolio optimization under interval uncertainty for returns and covariance matrix. The proposed robust counterparts for both models are in the form of second ...
The generalized trust-region sub-problem with additional linear inequality constraints-Two convex quadratic relaxations and strong duality
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MDPI AG
, 2020 , Article)
In this paper, we study the problem of minimizing a general quadratic function subject to a quadratic inequality constraint with a fixed number of additional linear inequality constraints. Under a regularity condition, we ...
An efficient algorithm for large-scale extended trust-region subproblems with non-intersecting linear constraints
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Springer Science and Business Media Deutschland GmbH
, 2021 , Article)
In this paper, we study the extended trust-region subproblem in which the trust-region intersects the ball with m linear inequality constraints (m-eTRS). We assume that the linear constraints do not intersect inside the ...
Quadratic problems with two quadratic constraints: Convex quadratic relaxation and strong lagrangian duality
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EDP Sciences
, 2021 , Article)
In this paper, we study a nonconvex quadratic minimization problem with two quadratic constraints, one of which being convex. We introduce two convex quadratic relaxations (CQRs) and discuss cases, where the problem is ...
Revisited carmichael's reduced totient function
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MDPI AG
, 2021 , Article)
The modified Totient function of Carmichael ?(.) is revisited, where important properties have been highlighted. Particularly, an iterative scheme is given for calculating the ?(.) function. A comparison between the Euler ...
Large-scale global optimization based on hybrid swarm intelligence algorithm
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IOS Press
, 2020 , Article)
There are numerous large-scale global optimization problems encountered in real-world applications including engineering, manufacturing, economics, networking fields. Over the last two decades different varieties of swarm ...
Public Awareness of and Action towards Heart Attack Symptoms: An Exploratory Study
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MDPI
, 2020 , Article)
Background: Cardiovascular disease (CVD) is still the leading cause of mortality worldwide, and Malaysia is not an exception in this regard. The current research is an attempt to explore symptom awareness of and necessary ...
The effect of graphene structural integrity on the power factor of tin selenide nanocomposite
(
Elsevier
, 2021 , Article)
Tin selenide graphene nanocomposites (SnSe/GNPs) were fabricated with high-energy ball milling and hot pressing by varying the milling time of graphene. The effect of ball milling time on the graphene integrity and the ...