Results 31 to 40 of about 149,618 (314)

On Coverage and Capacity for Disaster Area Wireless Networks Using Mobile Relays

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
Public safety organizations increasingly rely on wireless technology to provide effective communications during emergency and disaster response operations.
Wenxuan Guo, Xinming Huang
doaj   +2 more sources

A Fast Neural Network Learning Algorithm with Approximate Singular Value Decomposition

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2019
The learning of neural networks is becoming more and more important. Researchers have constructed dozens of learning algorithms, but it is still necessary to develop faster, more flexible, or more accurate learning algorithms.
Jankowski Norbert, Linowiecki Rafał
doaj   +1 more source

Direct Aperture Optimization for Intensity Modulated Radiation Therapy: Two Calibrated Metaheuristics and Liver Cancer Case Study [PDF]

open access: yesInternational Journal of Industrial Engineering and Production Research, 2022
Integrated treatment planning for cancer patients has high importance in intensity modulated radiation therapy (IMRT). Direct aperture optimization (DAO) is one of the prominent approaches used in recent years to attain this goal.
Ali Fallahi   +2 more
doaj  

Calculating Kolmogorov complexity from the output frequency distributions of small Turing machines. [PDF]

open access: yesPLoS ONE, 2014
Drawing on various notions from theoretical computer science, we present a novel numerical approach, motivated by the notion of algorithmic probability, to the problem of approximating the Kolmogorov-Chaitin complexity of short strings.
Fernando Soler-Toscano   +3 more
doaj   +1 more source

The U-curve optimization problem: improvements on the original algorithm and time complexity analysis

open access: yesCoRR, 2014
The U-curve optimization problem is characterized by a decomposable in U-shaped curves cost function over the chains of a Boolean lattice. This problem can be applied to model the classical feature selection problem in Machine Learning. Recently, the U-Curve algorithm was proposed to give optimal solutions to the U-curve problem.
Marcelo da Silva Reis   +2 more
openaire   +2 more sources

Domination Analysis of Greedy Heuristics For The Frequency Assignment Problem [PDF]

open access: yes, 2003
We introduce the greedy expectation algorithm for the fixed spectrum version of the frequency assignment problem. This algorithm was previously studied for the travelling salesman problem.
Noble, SD   +6 more
core   +1 more source

Towards Bio-Inspired Anomaly Detection Using the Cursory Dendritic Cell Algorithm [PDF]

open access: yes, 2021
The autonomous and adaptable identification of anomalies in industrial contexts, particularly in the physical processes of Cyber-Physical Production Systems (CPPS), requires using critical technologies to identify failures correctly. Most of the existing
Carlos Pinto, Rui Pinto, Gil Gonçalves
core   +1 more source

Selected Multicriteria Shortest Path Problems: An Analysis of Complexity, Models and Adaptation of Standard Algorithms [PDF]

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2007
Selected Multicriteria Shortest Path Problems: An Analysis of Complexity, Models and Adaptation of Standard AlgorithmsThe paper presents selected multicriteria (multiobjective) approaches to shortest path problems. A classification of multi-objective shortest path (MOSP) problems is given.
openaire   +1 more source

Clustering Affine Subspaces: Algorithms and Hardness [PDF]

open access: yes, 2012
We study a generalization of the famous k-center problem where each object is an affine subspace of dimension Δ, and give either the first or significantly improved algorithms and hardness results for many combinations of parameters.
Lee, Euiwoong
core   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

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