Search results for "meme"
showing 10 items of 101 documents
A Memetic Algorithm for Binary Image Reconstruction
2008
This paper deals with a memetic algorithm for the reconstruction of binary images, by using their projections along four directions. The algorithm generates by network flows a set of initial images according to two of the input projections and lets them evolve toward a solution that can be optimal or close to the optimum. Switch and compactness operators improve the quality of the reconstructed images which belong to a given generation, while the selection of the best image addresses the evolution to an optimal output.
Fitness diversity based adaptation in Multimeme Algorithms:A comparative study
2007
This paper compares three different fitness diversity adaptations in multimeme algorithms (MmAs). These diversity indexes have been integrated within a MmA present in literature, namely fast adaptive memetic algorithm. Numerical results show that it is not possible to establish a superiority of one of these adaptive schemes over the others and choice of a proper adaptation must be made by considering features of the problem under study. More specifically, one of these adaptations outperforms the others in the presence of plateaus or limited range of variability in fitness values, another adaptation is more proper for landscapes having distant and strong basins of attraction, the third one, …
A hybrid genetic algorithm with local search: I. Discrete variables: optimisation of complementary mobile phases
2001
Abstract A hybrid genetic algorithm was developed for a combinatorial optimisation problem. The assayed hybridation modifies the reproduction pattern of the genetic algorithm through the application of a local search method, which enhances each individual in each generation. The method is applied to the optimisation of the mobile phase composition in liquid chromatography, using two or more mobile phases of complementary behaviour. Each of these phases concerns the optimal separation of certain compounds in the analysed mixture, while the others can remain overlapped. This optimisation approach may be useful in situations where full resolution with a single mobile phase is unfeasible. The o…
Estudio exploratorio de las estrategias de encuadre discursivo en memes humorísticos publicados en Twitter durante las elecciones generales de noviem…
2020
La presente investigación se basa en el análisis de un corpus de 115 memes humorísticos difundidos en la red social Twitter, durante las elecciones generales celebradas en España en noviembre de 2019. Para su recopilación se han consultado los tuits publicados haciendo uso de los hashtags que se convirtieron en trending topic, en el transcurso de la campaña electoral que tuvo lugar entre el 1 y el 10 de noviembre de 2019. En ellos hemos podido identificar los principales rasgos que caracterizan al discurso pseudopolítico y determinadas estrategias de encuadre discursivo utilizadas para movilizar el voto y orientar cognitivamente los mensajes. This research is based on the analysis of a corp…
Château de Gien (Loiret) : Instrumentum et statut social
2021
Defining the role of common variation in the genomic and biological architecture of adult human height
2014
Item does not contain fulltext Using genome-wide data from 253,288 individuals, we identified 697 variants at genome-wide significance that together explained one-fifth of the heritability for adult height. By testing different numbers of variants in independent studies, we show that the most strongly associated approximately 2,000, approximately 3,700 and approximately 9,500 SNPs explained approximately 21%, approximately 24% and approximately 29% of phenotypic variance. Furthermore, all common variants together captured 60% of heritability. The 697 variants clustered in 423 loci were enriched for genes, pathways and tissue types known to be involved in growth and together implicated genes…
A precise measurement of the Z resonance parameters through its hadronic decays
1990
A measurement of the cross section for e+e-→ hadrons using 11 000 hadronic decays of the Z boson at ten different center-of-mass energies is presented. A three-parameter fit gives the following values for the Z mass MZ, the total width ΓZ, the product of the electronic and hadronic partial widths ΓeΓh, and the unfolded pole cross section σ0: MZ = 91.171 ± 0.030 (stat.) ± 0.030 (beam) GeV, ΓZ = 2.511 ± 0.065 GeV, ΓeΓh = 0.148 ± 0.006 (stat.) ± 0.004 (syst.) GeV2, σ0 = 41.6 ± 0.7 (stat.) ± 1.1 (syst.) nb, Good agreement with the predictions of the standard model is observed. From a two-parameter fit the number of massless neutrino generations is found to be Nv = 2.91 ± 0.26. Thus the hypothes…
Integrating Cross-Dominance Adaptation in Multi-objective Memetic Algorithms
2008
This chapter proposes a novel adaptive memetic approach for solving multi-objective optimization problems. The proposed approach introduces the novel concept of crossdominance and employs this concept within a novel probabilistic scheme which makes use of the Wigner distribution for performing coordination of the local search. Thus, two local searchers are integrated within an evolutionary framework which resorts to an evolutionary algorithm previously proposed in literature for solving multi-objective problems. These two local searchers are a multi-objective version of simulated annealing and a novel multi-objective implementation of the Rosenbrock algorithm.
An enhanced memetic differential evolution in filter design for defect detection in paper production.
2008
This article proposes an Enhanced Memetic Differential Evolution (EMDE) for designing digital filters which aim at detecting defects of the paper produced during an industrial process. Defect detection is handled by means of two Gabor filters and their design is performed by the EMDE. The EMDE is a novel adaptive evolutionary algorithm which combines the powerful explorative features of Differential Evolution with the exploitative features of three local search algorithms employing different pivot rules and neighborhood generating functions. These local search algorithms are the Hooke Jeeves Algorithm, a Stochastic Local Search, and Simulated Annealing. The local search algorithms are adap…
L'irosa eloquenza delle strumae
2013
The aim of this paper is to demonstrate how Cicero in his in Vatinium employs the iconic power of the body of the accused, Vatinius, and its repulsive strumae as a logical tool to support his persuasion strategy, thereby creating an enthymeme based upon the premises provided by the features of the body. This way of reasoning rests upon a strongly oriented and often distorting reading of the physical characteristics of the body in accordance with the physiognomic and pathognomonic doctrines. As a result, the de-formities of Vatinius's body, instead of being used to commend Vatinius, become important elements in Cicero's strategy of belittling his opponent's authority.