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Congestion-aware traffic routing for large-scale mobile agent systems
Published 2013Get full text
Thesis -
445
Asymptotically Optimal Algorithms for One-to-One Pickup and Delivery Problems With Applications to Transportation Systems
Published 2013“…The SCP is NP-Hard and the best known approximation algorithm only provides a 9/5 approximation ratio. …”
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446
Streaming Similarity Search over One Billion Tweets Using Parallel Locality-Sensitive Hashing
Published 2014“…One popular algorithm for similarity search, especially for high dimensional data (where spatial indexes like kd-trees do not perform well) is Locality Sensitive Hashing (LSH), an approximation algorithm for finding similar objects. In this paper, we describe a new variant of LSH, called Parallel LSH (PLSH) designed to be extremely efficient, capable of scaling out on multiple nodes and multiple cores, and which supports high-throughput streaming of new data. …”
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447
Optimal Pricing in Networks with Externalities
Published 2014“…Next, we describe an approximation algorithm for finding the optimal set of agents. …”
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448
AM with Multiple Merlins
Published 2014“…In the other direction, we give a simple quasipolynomial-time approximation algorithm for free games, and use it to prove that, assuming the ETH, our 3SAT protocol is essentially optimal. …”
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449
Room allocation with capacity diversity and budget constraints
Published 2019“…Second, this paper presents a (c* + 2)/2 + ε-factor approximation algorithm (with ε > 0) for the case in which the capacity of each room does not exceed a constant c*. …”
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Journal Article -
450
Cost-aware and distance-constrained Collective Spatial Keyword Query
Published 2023“…We develop a suite of two algorithms including an exact algorithm and an approximation algorithm with provable guarantees for the problem. …”
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Journal Article -
451
Performance evaluation for production systems through queueing models
Published 2018“…For queueing networks, we propose a unified approximation algorithm based on the properties (i.e., affine structure) of mean queue times in queueing systems. …”
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Thesis -
452
Distributed Task Allocation Algorithms for Multi-Agent Systems With Very Low Communication
Published 2022-01-01“…We present two task allocation algorithms that assume communication may not happen, but that benefit whenever communications are successful. (1) The Spatial Division Playbook Algorithm divides task among agents based on an area decomposition. (2) The Traveling Salesman Playbook Algorithm considers mission travel distance by leveraging Christofides’ 3/2 approximation algorithm. These algorithms have task completion runtime complexity of <inline-formula> <tex-math notation="LaTeX">$O(m \log m)$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$O(m^{3})$ </tex-math></inline-formula>, respectively, where <inline-formula> <tex-math notation="LaTeX">$m$ </tex-math></inline-formula> refers to the total number of tasks. …”
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453
SWIPT-Assisted Energy Efficiency Optimization in 5G/B5G Cooperative IoT Network
Published 2021-04-01“…Moreover, a comparison of the outer approximation algorithm (OAA) and mesh adaptive direct search algorithm (MADS) for non-linear optimization with the exhaustive search algorithm is provided. …”
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454
THE GROTHENDIECK CONSTANT IS STRICTLY SMALLER THAN KRIVINE’S BOUND
Published 2013-01-01“…By establishing the usefulness of higher-dimensional rounding schemes, this fact has consequences in approximation algorithms. Specifically, it yields the best known polynomial-time approximation algorithm for the Frieze–Kannan Cut Norm problem, a generic and well-studied optimization problem with many applications.…”
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455
Subfeature Ensemble-Based Hyperspectral Anomaly Detection Algorithm
Published 2022-01-01“…Second, six methods including the prior-based tensor approximation algorithm (PTA), Reed–Xiaoli method, a low-rank and sparse representation method, a low-rank and sparse matrix decomposition-based Mahalanobis distance method, the graph and total variation regularized low-rank representation-based method, and a method based on tensor principal component analysis are applied to detect anomalies on the original HSI, and the method with the best performance is used to obtain an enhanced feature set. …”
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456
A mixed-signal oscillatory neural network for scalable analog computations in phase domain
Published 2023-01-01“…We find that SKONN’s accuracy is as good as the Goemans–Williamson 0.878-approximation algorithm for Max-cut; whereas SKONN’s computation time only grows logarithmically. …”
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From graphs to matrices, and back : new techniques for graph algorithms
Published 2011Get full text
Thesis -
460
Optimization and network sensitivity analysis for process retrofitting
Published 2005Get full text
Thesis