Results 21 to 30 of about 1,948,122 (285)

OPTIMAL WEIGHING PROBLEMS

open access: yesJournal of the Operations Research Society of Japan, 1989
The false coin problem is stated as: You are given a balance and N coins (N\(\geq 3)\). N-1 coins are equal in weight, but the N-th is defective, and weighs somewhat more or less than each of the other N-1 coins. Devise a procedure to determine, in the minimum number of weighings, which is the false coin, and whether it is lighter or heavier than the ...
Hirokawa, Sumio, Wakuta, Kazuyoshi
openaire   +3 more sources

Convex Combinatorial Optimization [PDF]

open access: yes, 2003
We introduce the convex combinatorial optimization problem, a far reaching generalization of the standard linear combinatorial optimization problem. We show that it is strongly polynomial time solvable over any edge-guaranteed family, and discuss several
Onn, Shmuel, Rothblum, Uriel G.
core   +4 more sources

Generalized Kruithof approach for traffic matrix estimation [PDF]

open access: yes, 2006
[Abstract]: In this paper, the traffic matrix estimation problem is formulated as an nonlinear optimization problem based on the generalized Kruithof approach which uses the Kullback distance to measure the probabilistic distance between two traffic ...
Eum, Suyong   +2 more
core   +1 more source

Energy efficiency optimization in MIMO interference channels: A successive pseudoconvex approximation approach [PDF]

open access: yes, 2018
In this paper, we consider the (global and sum) energy efficiency optimization problem in downlink multi-input multi-output multi-cell systems, where all users suffer from multi-user interference.
Chatzinotas, Symeon   +3 more
core   +2 more sources

Alternating Direction Methods for Latent Variable Gaussian Graphical Model Selection [PDF]

open access: yes, 2012
Chandrasekaran, Parrilo and Willsky (2010) proposed a convex optimization problem to characterize graphical model selection in the presence of unobserved variables.
Ma, Shiqian, Xue, Lingzhou, Zou, Hui
core   +2 more sources

A Study on Wireless Charging for Prolonging the Lifetime of Wireless Sensor Networks

open access: yesSensors, 2017
Wireless charging is an important issue in wireless sensor networks, since it can provide an emerging and effective solution in the absence of other power supplies.
Weijian Tu   +3 more
doaj   +1 more source

Using Functional Programming to recognize Named Structure in an Optimization Problem: Application to Pooling [PDF]

open access: yes, 2016
Branch-and-cut optimization solvers typically apply generic algorithms, e.g., cutting planes or primal heuristics, to expedite performance for many mathematical optimization problems.
Ceccon, F, Kouyialis, G, Misener, R
core   +1 more source

Optimizing the Capacity of Cognitive Radio Networks with Power Control and Variable Spectrum Allocation

open access: yesTransport and Telecommunication, 2018
Cognitive Radio Networks (CRN) were introduced as a means to more efficiently reuse the licensed radio frequency spectrum. One of their salient features is the ability of unlicensed nodes to dynamically adapt their radio parameters according to their ...
Benghabrit Nawel, Kaddour Mejdi
doaj   +1 more source

Solution of the inverse problem of tracer tests interpretation results for oil reservoirs in the presence of low resistance channels

open access: yesВестник Самарского университета: Естественнонаучная серия
Tracer tests of oil reservoirs have become widely used to assess the parameters of low resistance channels, leading to premature increasing of production water cut.
Konstantin M. Fedorov   +4 more
doaj   +1 more source

A Fast Feature Selection Algorithm Based on Swarm Intelligence in Acoustic Defect Detection

open access: yesIEEE Access, 2018
Feature selection plays an important role in data mining and pattern recognition. However, most existing feature selection methods suffer from stagnation in local optimal and/or high computational cost.
Tao Zhang   +3 more
doaj   +1 more source

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