Results 21 to 30 of about 98,123 (253)

Improved sine cosine algorithm for large-scale optimization problems

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
Aiming at the shortcomings of the sine cosine algorithm (SCA) in solving the large-scale optimization problems, such as low accuracy, slow convergence speed, and being easy to fall into the dimension disaster, we propose an sine cosine algorithm with ...
ZHANG Chao, YANG Yi
doaj   +1 more source

Multivariate time series analysis for short-term forecasting of ground level ozone (O3) in Malaysia [PDF]

open access: yes, 2021
The declining of air quality mostly affects the elderly, children, people with asthma, as well as a restriction on outdoor activities. Therefore, there is an importance to provide a statistical modelling to forecast the future values of surface layer
Raffee, Ahmad Fauzi
core   +1 more source

An Improved Flow Direction Algorithm for Engineering Optimization Problems

open access: yesMathematics, 2023
Flow Direction Algorithm (FDA) has better searching performance than some traditional optimization algorithms. To give the basic Flow Direction Algorithm more effective searching ability and avoid multiple local minima under the searching space, and ...
Yuqi Fan   +4 more
doaj   +1 more source

Cuckoo Search Algorithm: Review and its Application

open access: yesTikrit Journal of Pure Science, 2022
Optimization techniques play a major role in real-world problems, As many cases in which decisions are made are based on random research. But choosing the optimization technology is a big challenge for the user. The cuckoo search algorithm is one of the
Manar Abdulkareem Al-Abaji
doaj   +1 more source

Reaction, Levy Flights, and Quenched Disorder [PDF]

open access: yes, 2002
We consider the A + A --> emptyset reaction, where the transport of the particles is given by Levy flights in a quenched random potential. With a common literature model of the disorder, the random potential can only increase the rate of reaction. With a
A. Ott   +15 more
core   +1 more source

Lévy flights and Lévy-Schrödinger semigroups [PDF]

open access: yesOpen Physics, 2010
Abstract We analyze two different confining mechanisms for Lévy flights in the presence of external potentials. One of them is due to a conservative force in the corresponding Langevin equation. Another is implemented by Lévy-Schrödinger semigroups which induce so-called topological Lévy processes (Lévy flights with locally modified jump
openaire   +3 more sources

Interactive Levy Flight in Interest Space

open access: yesCoRR, 2017
Compared to the well-studied topic of human mobility in real geographic space, very few studies focus on human mobility in virtual space, such as interests, knowledge, ideas, and so forth. However, it relates to the issues of management of public opinions, knowledge diffusion, and innovation.
Fanqi Zeng   +5 more
openaire   +2 more sources

Levy Foraging in a Dynamic Environment – Extending the Levy Search

open access: yesInternational Journal of Advanced Robotic Systems, 2015
A common task for robots is the patrolling of an unknown area with inadequate information about target locations. Under these circumstances it has been suggested that animal foraging could provide an optimal or at least sub-optimal search methodology ...
Vincenzo Fioriti   +3 more
doaj   +1 more source

Lévy flights in a box [PDF]

open access: yesChaos, Solitons & Fractals, 2015
It is shown that a quantum Lévy process in a box leads to a problem involving topological constraints in space, and its treatment in the framework of the path integral formalism with the Lévy measure is suggested. The eigenvalue problem for the infinite potential well is properly defined and solved.
openaire   +2 more sources

On Optimal Tempered Lévy Flight Foraging

open access: yesFrontiers in Physics, 2018
Optimal random foraging strategy has gained increasing concentrations. It is shown that Lévy flight is more efficient compared with the Brownian motion when the targets are sparse.
Yuquan Chen   +3 more
doaj   +1 more source

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