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781
Efficient Deployment of Base Stations in Wireless Communication Networks
Published 2016“…In this paper, we improve the time complexity of the approximation algorithms and conduct simulations to demonstrate the validness of our improvements.…”
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Journal Article -
782
Quantum computational phase transition in combinatorial problems
Published 2022-07-01“…Then, we show that the high problem density region, which limits QAOA’s performance in hard optimization problems (reachability deficits), is actually a good place to utilize QAOA: its approximation ratio has a much slower decay with the problem density, compared to classical approximate algorithms. Indeed, it is exactly in this region that quantum advantages of QAOA over classical approximate algorithms can be identified.…”
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Article -
783
Time−Bounded Verification of CTMCs Against Real−Time Specifications
Published 2011“…For MTL, we consider both the continuous and the pointwise semantics. The approximation algorithms differ mainly in constraints generation for the two types of specifications.…”
Conference item -
784
An Approximate Cone Beam Reconstruction Algorithm for Gantry-Tilted CT Using Tangential Filtering
Published 2006-01-01“…FDK algorithm is a well-known 3D (three-dimensional) approximate algorithm for CT (computed tomography) image reconstruction and is also known to suffer from considerable artifacts when the scanning cone angle is large. …”
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785
MULTIPLE-PURPOSE SOLUTION TO HOMOGENEOUS ALLOCATION PROBLEMS BASED ON MODIFIED ROMANOVSKY ALGORITHM AND SELECTIVE-PERMUTATION ALGORITHM
Published 2018-07-01“…The comparative analysis with such approximate algorithms as the critical pat h technique (CPT) and the evolutional genetic algorithm (EGA) is carried out. …”
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786
MULTIPLE-PURPOSE SOLUTION TO HOMOGENEOUS ALLOCATION PROBLEMS BASED ON MODIFIED ROMANOVSKY ALGORITHM AND SELECTIVE-PERMUTATION ALGORITHM
Published 2012-09-01“…The comparative analysis with such approximate algorithms as the critical pat h technique (CPT) and the evolutional genetic algorithm (EGA) is carried out. …”
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Article -
787
Performance Comparisons of Greedy Algorithms in Compressed Sensing
Published 2013“…Compressed sensing has motivated the development of numerous sparse approximation algorithms designed to return a solution to an underdetermined system of linear equations where the solution has the fewest number of nonzeros possible, referred to as the sparsest solution. …”
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788
Hierarchical MEC Servers Deployment and User-MEC Server Association in C-RANs over WDM Ring Networks
Published 2020-02-01“…In terms of the MINLP model, we then propose an enumeration algorithm and approximate algorithm based on the improved entropy weight and TOPSIS methods. …”
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Article -
789
Local clustering via approximate heat kernel PageRank with subgraph sampling
Published 2021-08-01“…But computing an exact heat kernel PageRank vector may be expensive, and approximate algorithms are often used instead. Most approximate algorithms compute the heat kernel PageRank vector on the whole graph, and thus are dependent on global structures. …”
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Article -
790
Fast mixing via polymers for random graphs with unbounded degree
Published 2021“…<p>The polymer model framework is a classical tool from statistical mechanics that has recently been used to obtain approximation algorithms for spin systems on classes of bounded-degree graphs; examples include the ferromagnetic Potts model on expanders and on the grid. …”
Conference item -
791
Fast mixing via polymers for random graphs with unbounded degree
Published 2022“…The polymer model framework is a classical tool from statistical mechanics that has recently been used to obtain approximation algorithms for spin systems on classes of bounded-degree graphs; examples include the ferromagnetic Potts model on expanders and on the grid. …”
Journal article -
792
Analytical and numerical approach for a nonlinear Volterra-Fredholm integro-differential equation
Published 2022-12-01“…The approximation of the solution is performed using Nystrom method in conjunction with successive approximations algorithm. Finally, we give a numerical example, in order to verify the effectiveness of the proposed method with respect to the analytical study. …”
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Article -
793
Conjugate Gradient Iterative Hard Thresholding: Observed Noise Stability for Compressed Sensing
Published 2014“…Conjugate Gradient Iterative Hard Thresholding (CGIHT) for compressed sensing combines the low per iteration complexity of fast greedy sparse approximation algorithms with the improved convergence rates of more complicated, projection based algorithms. …”
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794
Contribution to the Chebyshev Approximations of the Normalized Low-Pass Prototype
Published 2004-04-01“…The standard approximation algorithms are well described in theliterature, but some equiripple approximations are described with somedeficiencies. …”
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Article -
795
Blocks for two-machines total weighted tardiness flow shop scheduling problem
Published 2020-02-01“…We propose the introduction of new elimination block properties allowing for accelerating the operation of approximate algorithms of local searches, solving this problem and improving the quality of solutions determined by them.…”
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796
Token Swapping on Trees
Published 2023-01-01“…Furthermore, the two best-known 2-approximation algorithms have approximation factor exactly 2. 3. …”
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Article -
797
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798
Minimizing the Diameter of a Network Using Shortcut Edges
Published 2011“…We develop constant-factor approximation algorithms for different variations of this problem. …”
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Article -
799
A Trade-Off Algorithm for Solving p-Center Problems with a Graph Convolutional Network
Published 2022-04-01“…This study implements two methods to solve this problem: an exact algorithm and an approximate algorithm. Exact algorithms can get the optimal solution to the problem, but they are inefficient and time-consuming. …”
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800
Performance comparisons of greedy algorithms in compressed sensing
Published 2015“…Compressed sensing has motivated the development of numerous sparse approximation algorithms designed to return a solution to an underdetermined system of linear equations where the solution has the fewest number of nonzeros possible, referred to as the sparsest solution. …”
Journal article