Results 31 to 40 of about 138,670 (265)

Drones Routing with Stochastic Demand

open access: yesDrones, 2023
Motivated by the increasing number of drones used for package delivery, we first study the problem of Multiple drOne collaborative Routing dEsign (MORE) in this article. That is, given a fixed number of drones and customers, determining the delivery trip
Nan Yu   +6 more
doaj   +1 more source

Approximation Algorithms for the Submodular Load Balancing with Submodular Penalties

open access: yesMathematics, 2020
In this paper, we study the submodular load balancing problem with submodular penalties. The objective of this problem is to balance the load among sets, while some elements can be rejected by paying some penalties. Officially, given an element set V, we
Xiaofei Liu, Peiyin Xing, Weidong Li
doaj   +1 more source

Fair-Energy Trajectory Planning for Multi-Target Positioning Based on Cooperative Unmanned Aerial Vehicles

open access: yesIEEE Access, 2020
Owing to the flexibility and low cost, cooperative Unmanned Aerial Vehicles(UAVs) have been attractive in multi-target positioning recently. Although it is popular and easy to accomplish, positioning based on trilateration method still faces challenges ...
Yao Ji, Chao Dong, Xiaojun Zhu, Qihui Wu
doaj   +1 more source

Expanded Douglas–Peucker Polygonal Approximation and Opposite Angle-Based Exact Cell Decomposition for Path Planning with Curvilinear Obstacles

open access: yesApplied Sciences, 2019
The Expanded Douglas⁻Peucker (EDP) polygonal approximation algorithm and its application method for the Opposite Angle-Based Exact Cell Decomposition (OAECD) are proposed for the mobile robot path-planning problem with curvilinear obstacles.
Jin-Woo Jung   +4 more
doaj   +1 more source

Approximation Algorithms for $\ell_0$-Low Rank Approximation

open access: yesCoRR, 2017
We study the $\ell_0$-Low Rank Approximation Problem, where the goal is, given an $m \times n$ matrix $A$, to output a rank-$k$ matrix $A'$ for which $\|A'-A\|_0$ is minimized. Here, for a matrix $B$, $\|B\|_0$ denotes the number of its non-zero entries.
Bringmann, K. ; https://orcid.org/0000-0003-1356-5177   +2 more
openaire   +4 more sources

Approximate Weak Greedy Algorithms [PDF]

open access: yesAdvances in Computational Mathematics, 2001
We present a generalization of V. Temlyakov's weak greedy algorithm, and give a sufficient condition for norm convergence of the algorithm for an arbitrary dictionary in a Hilbert space. We provide two counter-examples to show that the condition cannot be relaxed for general dictionaries.
Rémi Gribonval, Morten Nielsen 0002
openaire   +3 more sources

Approximate Discrete Reconstruction Algorithm [PDF]

open access: yesFundamenta Informaticae, 2013
Discrete tomography deals with tomographic reconstruction of greyscale images for which the set of possible grey levels is discrete and small. Here, we develop a discrete approximate reconstruction algorithm. Our algorithm computes an image that has only grey values belonging to a given finite set.
K.J. Batenburg (Joost)   +2 more
openaire   +4 more sources

Approximation Algorithms for Intersection Graphs [PDF]

open access: yesAlgorithmica, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Frank Kammer, Torsten Tholey
openaire   +3 more sources

Approximation Algorithms for Scheduling with Reservations

open access: yesAlgorithmica, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Diedrich, Florian   +3 more
openaire   +3 more sources

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

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