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Artykuły w czasopismach na temat "Réseaux neuronaux à deux couches"
Collin, Antoine, Dorothée James, Coralie Monpert, Sophie Loyer, Pirta Palola, Lisa Wedding i Eric Feunteun. "Modélisation de la bathymétrie par Pléiades Neo en baie de Saint-Malo: transfert radiatif et réseaux de neurones". Revue Française de Photogrammétrie et de Télédétection 226, nr 1 (16.06.2024): 11–19. http://dx.doi.org/10.52638/rfpt.2024.683.
Pełny tekst źródłaAinslie, Andrew, i Xavier Drèze. "Le data-mining et alternative modèles classiques /réseaux neuronaux". Décisions Marketing N° 7, nr 1 (1.01.1996): 75–83. http://dx.doi.org/10.3917/dm.07.0075.
Pełny tekst źródłaPfister, Ulrich. "Le petit crédit rural en Suisse aux XVIe-XVIIIe siècles". Annales. Histoire, Sciences Sociales 49, nr 6 (grudzień 1994): 1339–57. http://dx.doi.org/10.3406/ahess.1994.279332.
Pełny tekst źródłaLek, S., I. Dimopoulos, M. Derraz i Y. El Ghachtoul. "Modélisation de la relation pluie-débit à l'aide des réseaux de neurones artificiels". Revue des sciences de l'eau 9, nr 3 (12.04.2005): 319–31. http://dx.doi.org/10.7202/705255ar.
Pełny tekst źródłaJean-Robert, Kamenan Satti, Adja Miessan Germain, Marc Youan Ta, Amani Michel Kouassi i Amandine Carine Njeugeut Mbiafeu. "Qualité des données hydrométriques prédites par une approche machine learning dans l’évaluation de la ressource en eau au nord de la Cote d’Ivoire". European Scientific Journal, ESJ 20, nr 36 (31.12.2024): 155. https://doi.org/10.19044/esj.2024.v20n36p155.
Pełny tekst źródłaFahim Fahmy, Cherine. "L'Elagage synaptique". Cortica 3, nr 2 (21.09.2024): 1–20. http://dx.doi.org/10.26034/cortica.2024.6091.
Pełny tekst źródłaHARINAIVO, A., H. HAUDUC i I. TAKACS. "Anticiper l’impact de la météo sur l’influent des stations d’épuration grâce à l’intelligence artificielle". Techniques Sciences Méthodes 3 (20.03.2023): 33–42. http://dx.doi.org/10.36904/202303033.
Pełny tekst źródłaSchaer, Eric, Jean-Marc Commenge, Laurent Perrin i André Laurent. "Education 4.0 : défi de la révolution digitale dans l’actualisation des connaissances et compétences des cursus de génie des procédés". MATEC Web of Conferences 407 (2025): 03001. https://doi.org/10.1051/matecconf/202540703001.
Pełny tekst źródłaHildebrand, Robert S., i Joseph B. Whalen. "Arc and Slab-Failure Magmatism in Cordilleran Batholiths I – The Cretaceous Coastal Batholith of Peru and its Role in South American Orogenesis and Hemispheric Subduction Flip". Geoscience Canada 41, nr 3 (29.08.2014): 255. http://dx.doi.org/10.12789/geocanj.2014.41.047.
Pełny tekst źródłaMoffo, Fabien, Auguste Noumsi Woguia, Joseph Mvogo Ngono i Samuel Bowong. "Analysis of COVID-19 Coughs: From the Mildest to the Most Severe Form, a Realistic Classification Using Deep Learning". Revue Africaine de Recherche en Informatique et Mathématiques Appliquées Volume 42 - Special issue CRI... (17.01.2025). https://doi.org/10.46298/arima.13343.
Pełny tekst źródłaRozprawy doktorskie na temat "Réseaux neuronaux à deux couches"
Dabo, Issa-Mbenard. "Applications de la théorie des matrices aléatoires en grandes dimensions et des probabilités libres en apprentissage statistique par réseaux de neurones". Electronic Thesis or Diss., Bordeaux, 2025. http://www.theses.fr/2025BORD0021.
Pełny tekst źródłaThe functioning of machine learning algorithms relies heavily on the structure of the data they are given to study. Most research work in machine learning focuses on the study of homogeneous data, often modeled by independent and identically distributed random variables. However, data encountered in practice are often heterogeneous. In this thesis, we propose to consider heterogeneous data by endowing them with a variance profile. This notion, derived from random matrix theory, allows us in particular to study data arising from mixture models. We are particularly interested in the problem of ridge regression through two models: the linear ridge model and the random feature ridge model. In this thesis, we study the performance of these two models in the high-dimensional regime, i.e., when the size of the training sample and the dimension of the data tend to infinity at comparable rates. To this end, we propose asymptotic equivalents for the training error and the test error associated with the models of interest. The derivation of these equivalents relies heavily on spectral analysis from random matrix theory, free probability theory, and traffic theory. Indeed, the performance measurement of many learning models depends on the distribution of the eigenvalues of random matrices. Moreover, these results enabled us to observe phenomena specific to the high-dimensional regime, such as the double descent phenomenon. Our theoretical study is accompanied by numerical experiments illustrating the accuracy of the asymptotic equivalents we provide
Lorquet, Vincent. "Etude d'un codage semi-distribué adaptatif pour les réseaux multi-couches. Application au diagnostic, à la modélisation et à la commande". Paris, ENST, 1992. http://www.theses.fr/1992ENST0025.
Pełny tekst źródłaCosta, Pascale. "Contribution à l'utilisation des réseaux de neurones à couches en traitement du signal". Cachan, Ecole normale supérieure, 1996. http://www.theses.fr/1996DENS0030.
Pełny tekst źródłaClemens, Stephan. "Expression, modulation dynamique et interactions de deux réseaux neuronaux stomatogastriques des crustacés : études électrophysiologiques in vivo". Bordeaux 1, 1998. http://www.theses.fr/1998BOR10516.
Pełny tekst źródłaHugues, Emmanuel. "Modélisation des performances des avions par réseaux de neurones multi-couches : application à la maximisation de la masse au décollage". Toulouse, ENSAE, 1999. http://www.theses.fr/1999ESAE0003.
Pełny tekst źródłaAmontieva, Ianina. "Plasticité de la modulation serotoninergique de rythmes moteurs chez deux vertebrés inférieurs : la lamproie et l'urodele". Bordeaux 2, 2003. http://www.theses.fr/2003BOR21082.
Pełny tekst źródłaIt is now well established that the rythmic activities underlying motor behaviors in Vertebrates are generated by neural networks, which are under the control of several neuromodulators, among which serotonin (5-HT) plays a critical role because it is involved in the modulation and functional recovery after lesion of several motor networks. In the present study we have studied the serotonergic 5-HT modulation of the respiratory network in lamprey and that of the locomotor network after spinal cord injury in an adult salamander (Pleurodeles waltlii). Extracellular recordings from the ventral roots in lamprey showed that 5-HT modulates the activity of the respiratory rythm generator in different directions, depending on its concentration. The respiratory rythm was decreased at high concentration (>50 mu M) while it was increased at low (< mu M) concentration. We have investigated the effects of a local application (1-2 spinal segments) of 5-HT on the sublesional spinal cord in recovered (3-8 months post op. ) spinalized salamanders. The induced effects were compared to those induced by a similar drug application in intact animals. The locomotor pattern was documented using electromyographical recordings. Our results showed that an exogenous application of 5-HT (0. 5-205 mu M) induced a decrease of the swimming rythm in intact animal whereas it induced an increase in the swimming rythm in recovered spinal-transected animals. All these effects were mimicked by a local application of a specific 5-HT uptake blocker. This suggested that endogenously released 5-HT could also induce these changes. Pharmacological analyses using different specific 5-HT receptor agonists evidenced that reversal of 5-HT effects on the swimming frequency involved 5-HT3 like-receptors. . . .
Gereige, Issam. "Contribution des réseaux de neurones dans le domaine de l'ellipsométrie : application à la scatterométrie". Phd thesis, Université Jean Monnet - Saint-Etienne, 2008. http://tel.archives-ouvertes.fr/tel-00365631.
Pełny tekst źródłaPerez, Schuster Veronica. "the neural basis of motion after effect in zebrafish larvae". Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066030.
Pełny tekst źródłaOne of the main goals in neuroscience is to understand how cognitive functions are encoded by the dynamics of large neuronal networks. The main stream to study sensory perception has mainly focused on sensory stimulation and neuronal recordings of the induced neural responses. An alternative approach is the use of sensory illusions, in which sensory perception take place in the absence of physical external stimulation. For this purpose, we have used a multidisciplinary approach combining the zebrafish larva as the experimental model, two-photon calcium imaging, motor behavior and optogenetics. We showed that the zebrafish larva is capable of perceiving motion after-effect (MAE). Using optogenetics (halorhodopsin) to prevent eye movements during the presentation of the conditioning stimulus (CS), we showed that pursuit eye movements during CS are not imperative for the induction of MAE, suggesting that neither muscular fatigue nor eye-muscle proprioception feedback play a role in the generation of MAE. Furthermore, we used two-photon microscopy in combination with transgenic fish expressing GcaMP3 . We first observed that during MAE, neurons in the optic tectum (the largest and highest visual brain center of the larva) were strongly habituated. This habituation later decayed with a temporal scale that matched that of the optomotor MAE-like behavior. In contrast, no significant habituation was observed in the retina, Thus, we suggested that the optic tectum but not the retina plays a role in generation of MAE. Our approach contributed to a more comprehensive view of the neuronal mechanisms underlying MAE, and shed light on the neuronal correlate of motion perception
Lefevre, Fabien. "Caractérisation de structures du type plaque par ondes guidées générées et détectées par laser". Valenciennes, 2010. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/24980ba6-f06c-4c75-988a-16e1228d2e42.
Pełny tekst źródłaThe deposition of thin layers on substrates is more and more required in many applications. For example, to reach high technical performance, bumpers or other parts are nickeled to improve their impermeability and resistance. Another example in microelectronics is the realization of transistors found in LCDs where they are associated with each pixel. The use of these layer/substrate structures is growing, so the importance of having non-destructive techniques to monitor and characterize them is well understood. The point in using ultrasonic waves for non-destructive testing and evaluation of various materials and structures is well known. In this work, the aim was to use guided waves to monitor and to characterize plaque-like structures. The main advantage of using these modes lies in their ability to test very large areas and inaccessible structures. For the generation and detection of guided waves, the laser ultrasonics technique was preferred. It is a broadband and non contact method which doesn't imply the use of coupling medium and which can be adapted to complex geometries. To take full advantage of this technique, it has been combined with neural networks in order to solve the inverse problem posed by the propagation of guided waves. As a result, an original, e cient and polyvalent characterization method has been obtained, which allowed us to determine the geometric properties and / or the elastic parameters of di erent plate-like structures. Structures made of silicon have been studied with this method. Finite element simulations and studies concerning the in uence of defects, including adhesion, on the waves propagation are also presented
El, Achkar Roger. "Contribution à l'étude et à la validation expérimentale de commandes neuronales d'un palier magnétique actif". Compiègne, 2008. http://www.theses.fr/2008COMP1747.
Pełny tekst źródłaThe active magnetic bearing (AMB) presents a solution for technical proble since it ensures the total levitation of a body in space eliminating any mechanical contact between the rotor and the stator. The goal of o work is to show that the control of the AMB by Multilayer perceptions (MLP) involves an improvement of the responses compared to the non linear control of the AMB by classical controllers. Two methods with MLP were developed to control the AMB. The first consists in adding the MLP in order to stabilize the system around the desired answers. This method is also used to reduce the value of the unbalance. In the second method, the MLP controls the parameters of the PID in order to minimize the oscillations of the answers obtained with the previous method. This tuning, by neural network, of the parameters of the PID controller reduces the consumption of the energy used by the AMB. The last section is devoted to the simulation of these two methods and the implementation of the MLP in real time application on an active magnetic bearing at the Heudiasyc laboratory of the UTC
Części książek na temat "Réseaux neuronaux à deux couches"
BELMONTE, Romain, Pierre TIRILLY, Ioan Marius BILASCO, Nacim IHADDADENE i Chaabane DJERABA. "Détection de points de repères faciaux par modélisation spatio-temporelle". W Analyse faciale en conditions non contrôlées, 105–49. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9111.ch3.
Pełny tekst źródłaRaporty organizacyjne na temat "Réseaux neuronaux à deux couches"
Djamai, N., R. A. Fernandes, L. Sun, F. Canisius i G. Hong. Python version of Simplified Level 2 Prototype Processor for retrieving canopy biophysical variables from Sentinel-2 multispectral data. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/p8stuehwyc.
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