Results 11 to 20 of about 4,775,611 (190)

Zero-one IP problems: Polyhedral descriptions & cutting plane procedures [PDF]

open access: yes, 1994
A systematic way for tightening an IP formulation is by employing classes of linear inequalities that define facets of the convex hull of the feasible integer points of the respective problems.
Mitra, G, Yarrow, L, Abdul-Hamid, F
core   +6 more sources

Separation algorithms for 0-1 knapsack polytopes [PDF]

open access: yes, 2010
Valid inequalities for 0-1 knapsack polytopes often prove useful when tackling hard 0-1 Linear Programming problems. To generate such inequalities, one needs separation algorithms for them, i.e., routines for detecting when they are violated.
Letchford, Adam, Kaparis, Konstantinos
core   +4 more sources

Local and global lifted cover inequalities for the multidimensional knapsack problem [PDF]

open access: yes, 2008
The 0-1 Multidimensional Knapsack Problem (0-1 MKP) is a well-known (and strongly NP-hard) combinatorial optimization problem with many applications. Up to now, the majority of upper bounding techniques for the 0-1 MKP have been based on Lagrangian or ...
Kaparis, Konstantinos, Letchford, A N
core   +5 more sources

Empowering and conquering infirmity of visually impaired using AI‐technology equipped with object detection and real‐time voice feedback system in healthcare application

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract The Internet of Things is emerging as a crucial technology in aiding humans and making their lives easier. Among the human population, a large percentage of people suffer from disabilities resulting in challenges in everyday life particularly people with visual disabilities.
Hania Tarik   +8 more
wiley   +1 more source

A Thermodynamical Selection-Based Discrete Differential Evolution for the 0-1 Knapsack Problem

open access: yesEntropy, 2014
Many problems in business and engineering can be modeled as 0-1 knapsack problems. However, the 0-1 knapsack problem is one of the classical NP-hard problems.
Zhaolu Guo   +4 more
doaj   +1 more source

Performance Optimization and Comprehensive Analysis of Binary Nutcracker Optimization Algorithm: A Case Study of Feature Selection and Merkle–Hellman Knapsack Cryptosystem

open access: yesComplexity, 2023
In this paper, a binary variant of a novel nature-inspired metaheuristic algorithm called the nutcracker optimization algorithm (NOA) is presented for binary optimization problems.
Mohamed Abdel-Basset   +3 more
doaj   +1 more source

A two-phase method for solving continuous rank-one quadratic knapsack problems [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2022
We propose a two-phase algorithm for solving continuous rank-one quadratic knapsack problems (R1QKPs). In particular, we study the solution structure of the problem without the knapsack constraint.
S.E. Monabbati
doaj   +1 more source

PKCHD: Towards a Probabilistic Knapsack Public-Key Cryptosystem with High Density

open access: yesInformation, 2019
By introducing an easy knapsack-type problem, a probabilistic knapsack-type public key cryptosystem (PKCHD) is proposed. It uses a Chinese remainder theorem to disguise the easy knapsack sequence. Thence, to recover the trapdoor information, the implicit
Yuan Ping   +4 more
doaj   +1 more source

Binary light spectrum optimizer for knapsack problems: An improved model

open access: yesAlexandria Engineering Journal, 2023
This paper presents a binary variant of a novel physics-based meta-heuristic optimization algorithm, namely Light spectrum optimizer (LSO), for tackling both the 0–1 knapsack (KP01) and multidimensional knapsack problems (MKP).
Mohamed Abdel-Basset   +5 more
doaj   +1 more source

An iterative variable-based fixation heuristic for the 0-1 multidimensional knapsack problem [PDF]

open access: yes, 2008
An iterative scheme which is based on a dynamic fixation of the variables is developed to solve the 0-1 multidimensional knapsack problem. Such a scheme has the advantage of generating memory information, which is used on the one hand to choose the ...
Salhi, Said   +2 more
core   +1 more source

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