Download or read book tude des r seaux de neurones en mode non supervis written by Hao Yin and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Après avoir étudié différents modèles de RNA et les règles d'apprentissage en mode non supervisé, il est proposé une nouvelle règle, l'apprentissage compétitif avec un pas inverse, pour résoudre les problèmes provoqués par les données aberrantes. Il est proposé également une modification du réseau ART1 pour résoudre le problème du mauvais codage d'un prototype sur-ensemble. Après avoir constaté qu'un réseau en deux couches comme ART2 ne peut classifier correctement que les données de structure simple, nous avons développé un réseau NéoART, qui est basé sur une variante du réseau ART2 et combine l'apprentissage non-supervisé et supervisé pour améliorer les performances dans le cas où un ensemble d'apprentissage exhaustif n'est pas disponible, et une méthode de classification non supervisée, l'Arbre de Relation Maximale, pour dépasser la limite intrinsèque des réseaux en deux couches.
Download or read book R seaux de neurones et auto r f rence written by Thomas Voegtlin and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis is to present a class of unsupervised learning algorithms for recurrent networks. In the first part (chapters 1 to 4), I propose a new approach to this question, based on a simple principle: self-reference. A self-referent algorithm is not based on the minimization of an objective criterion, such as an error function, but on a subjective function, that depends on what the network has previously learned. An example of a supervised recurrent network where learning is self-referent is the Simple Recurrent Network (SRN) by Elman (1990). In the SRN, self-reference is applied to the supervised error back-propagation algorithm. In this aspect, the SRN differs from other generalizations of back-propagation to recurrent networks, that use an objective criterion, such as Back-Propagation Through Time, or Real-Time Recurrent Learning. In this thesis, I show that self-reference can be combined with several well-known unsupervised learning methods: the Self-Organizing Map (SOM), Principal Components Analysis (PCA), and Independent Components Analysis (ICA). These techniques are classically used to represent static data. Self-reference allows one to generalize these techniques to time series, and to define unsupervised learning algorithms for recurrent networks.
Download or read book Les r seaux de neurones written by Pierre Borne and published by Editions OPHRYS. This book was released on 2007 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Apprentissage des r seaux de neurones profonds et applications en traitement automatique de la langue naturelle written by Xavier Glorot and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: En apprentissage automatique, domaine qui consiste à utiliser des données pour apprendre une solution aux problèmes que nous voulons confier à la machine, le modèle des Réseaux de Neurones Artificiels (ANN) est un outil précieux. Il a été inventé voilà maintenant près de soixante ans, et pourtant, il est encore de nos jours le sujet d'une recherche active. Récemment, avec l'apprentissage profond, il a en effet permis d'améliorer l'état de l'art dans de nombreux champs d'applications comme la vision par ordinateur, le traitement de la parole et le traitement des langues naturelles. La quantité toujours grandissante de données disponibles et les améliorations du matériel informatique ont permis de faciliter l'apprentissage de modèles à haute capacité comme les ANNs profonds. Cependant, des difficultés inhérentes à l'entraînement de tels modèles, comme les minima locaux, ont encore un impact important. L'apprentissage profond vise donc à trouver des solutions, en régularisant ou en facilitant l'optimisation. Le pré-entraînnement non-supervisé, ou la technique du ``Dropout'', en sont des exemples. Les deux premiers travaux présentés dans cette thèse suivent cette ligne de recherche. Le premier étudie les problèmes de gradients diminuants/explosants dans les architectures profondes. Il montre que des choix simples, comme la fonction d'activation ou l'initialisation des poids du réseaux, ont une grande influence. Nous proposons l'initialisation normalisée pour faciliter l'apprentissage. Le second se focalise sur le choix de la fonction d'activation et présente le rectifieur, ou unité rectificatrice linéaire. Cette étude a été la première à mettre l'accent sur les fonctions d'activations linéaires par morceaux pour les réseaux de neurones profonds en apprentissage supervisé. Aujourd'hui, ce type de fonction d'activation est une composante essentielle des réseaux de neurones profonds. Les deux derniers travaux présentés se concentrent sur les applications des ANNs en traitement des langues naturelles. Le premier aborde le sujet de l'adaptation de domaine pour l'analyse de sentiment, en utilisant des Auto-Encodeurs Débruitants. Celui-ci est encore l'état de l'art de nos jours. Le second traite de l'apprentissage de données multi-relationnelles avec un modèle à base d'énergie, pouvant être utilisé pour la tâche de désambiguation de sens.
Download or read book Neural Networks written by Gérard Dreyfus and published by Springer Science & Business Media. This book was released on 2005-11-25 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural networks represent a powerful data processing technique that has reached maturity and broad application. When clearly understood and appropriately used, they are a mandatory component in the toolbox of any engineer who wants make the best use of the available data, in order to build models, make predictions, mine data, recognize shapes or signals, etc. Ranging from theoretical foundations to real-life applications, this book is intended to provide engineers and researchers with clear methodologies for taking advantage of neural networks in industrial, financial or banking applications, many instances of which are presented in the book. For the benefit of readers wishing to gain deeper knowledge of the topics, the book features appendices that provide theoretical details for greater insight, and algorithmic details for efficient programming and implementation. The chapters have been written by experts and edited to present a coherent and comprehensive, yet not redundant, practically oriented introduction.
Download or read book R seaux de neurones pour la classification non supervis e written by Denis Hamad and published by . This book was released on 1997 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Actes written by and published by . This book was released on 1992 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CARI 96 written by Pierre Moukeli and published by Orstom Editions. This book was released on 1996 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FPGA Implementations of Neural Networks written by Amos R. Omondi and published by Springer Science & Business Media. This book was released on 2006-10-04 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 1980s and early 1990s there was signi?cant work in the design and implementation of hardware neurocomputers. Nevertheless, most of these efforts may be judged to have been unsuccessful: at no time have have ha- ware neurocomputers been in wide use. This lack of success may be largely attributed to the fact that earlier work was almost entirely aimed at developing custom neurocomputers, based on ASIC technology, but for such niche - eas this technology was never suf?ciently developed or competitive enough to justify large-scale adoption. On the other hand, gate-arrays of the period m- tioned were never large enough nor fast enough for serious arti?cial-neur- network (ANN) applications. But technology has now improved: the capacity and performance of current FPGAs are such that they present a much more realistic alternative. Consequently neurocomputers based on FPGAs are now a much more practical proposition than they have been in the past. This book summarizes some work towards this goal and consists of 12 papers that were selected, after review, from a number of submissions. The book is nominally divided into three parts: Chapters 1 through 4 deal with foundational issues; Chapters 5 through 11 deal with a variety of implementations; and Chapter 12 looks at the lessons learned from a large-scale project and also reconsiders design issues in light of current and future technology.
Download or read book Random Measures Theory and Applications written by Olav Kallenberg and published by Springer. This book was released on 2017-04-12 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering the first comprehensive treatment of the theory of random measures, this book has a very broad scope, ranging from basic properties of Poisson and related processes to the modern theories of convergence, stationarity, Palm measures, conditioning, and compensation. The three large final chapters focus on applications within the areas of stochastic geometry, excursion theory, and branching processes. Although this theory plays a fundamental role in most areas of modern probability, much of it, including the most basic material, has previously been available only in scores of journal articles. The book is primarily directed towards researchers and advanced graduate students in stochastic processes and related areas.
Download or read book The Constitution of Algorithms written by Florian Jaton and published by MIT Press. This book was released on 2021-04-27 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: A laboratory study that investigates how algorithms come into existence. Algorithms--often associated with the terms big data, machine learning, or artificial intelligence--underlie the technologies we use every day, and disputes over the consequences, actual or potential, of new algorithms arise regularly. In this book, Florian Jaton offers a new way to study computerized methods, providing an account of where algorithms come from and how they are constituted, investigating the practical activities by which algorithms are progressively assembled rather than what they may suggest or require once they are assembled.
Download or read book Fault Detection and Diagnosis in Industrial Systems written by L.H. Chiang and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Early and accurate fault detection and diagnosis for modern chemical plants can minimize downtime, increase the safety of plant operations, and reduce manufacturing costs. This book presents the theoretical background and practical techniques for data-driven process monitoring. It demonstrates the application of all the data-driven process monitoring techniques to the Tennessee Eastman plant simulator, and looks at the strengths and weaknesses of each approach in detail. A plant simulator and problems allow readers to apply process monitoring techniques.
Download or read book Proceedings of the 8th International Conference on Sciences of Electronics Technologies of Information and Telecommunications SETIT 18 Vol 1 written by Med Salim Bouhlel and published by Springer. This book was released on 2019-07-10 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume book presents an unusually diverse selection of research papers, covering all major topics in the fields of information and communication technologies and related sciences. It provides a wide-angle snapshot of current themes in information and power engineering, pursuing a cross-disciplinary approach to do so. The book gathers revised contributions that were presented at the 2018 International Conference: Sciences of Electronics, Technologies of Information and Telecommunication (SETIT'18), held on 20–22 December 2018 in Hammamet, Tunisia. This eighth installment of the event attracted a wealth of submissions, and the papers presented here were selected by a committee of experts and underwent additional, painstaking revision. Topics covered include: · Information Processing · Human-Machine Interaction · Computer Science · Telecommunications and Networks · Signal Processing · Electronics · Image and Video This broad-scoped approach is becoming increasingly popular in scientific publishing. Its aim is to encourage scholars and professionals to overcome disciplinary barriers, as demanded by current trends in the industry and in the consumer market, which are rapidly leading toward a convergence of data-driven applications, computation, telecommunication, and energy awareness. Given its coverage, the book will benefit graduate students, researchers and practitioners who need to keep up with the latest technological advances.
Download or read book Arterial Chemoreception written by Colin A. Nurse and published by Springer Science & Business Media. This book was released on 2012-10-19 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arterial chemoreceptors are unique structures which continuously monitor changes in arterial blood oxygen, carbon dioxide, glucose, and acid. Alterations in these gases are almost instantaneously sensed by arterial chemoreceptors and relayed into a physiological response which restores blood homeostasis. Arterial Chemoreception contains updated material regarding the physiology of the primary arterial chemoreceptor; the carotid body. Moreover, this book also explores tantalizing evidence regarding the contribution of the aortic bodies, chromaffin cells, lung neuroepithelial bodies, and brainstem areas involved in monitoring changes in blood gases. Furthermore this collection includes data showing the critical importance of these chemoreceptors in the pathophysiology of human disease and possible therapeutic treatments. This book is a required text for any researcher in the field of arterial chemoreception for years to come. It is also a critical text for physicians searching for bench-to-bedside treatments for heart failure, sleep apnea, and pulmonary hypertension.
Download or read book Cultural Consultation written by Laurence J. Kirmayer and published by Springer Science & Business Media. This book was released on 2013-08-15 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a recently completed project of cultural consultation in Montreal, Cultural Consultation presents a model of multicultural and applicable health care. This model used clinicians and consultants to provide in-depth assessment, treatment planning, and limited interventions in consultation with frontline primary care and mental health practitioners working with immigrants, refugees, and members of indigenous and ethnocultural communities. Evaluation of the service has demonstrated that focused interventions by consultants familiar with patients’ cultural backgrounds could improve the relationship between the patient and the primary clinician. This volume presents models for intercultural work in psychiatry and psychology in primary care, general hospital and specialty mental health settings. The editors highlight crucial topics such as: - Discussing the social context of intercultural mental health care, conceptual models of the role of culture in psychopathology and healing, and the development of a cultural consultation service and a specialized cultural psychiatric service - Examining the process of intercultural work more closely with particular emphasis oto strategies of consultation, the identity of the clinician, the ways in which gender and culture position the clinician, and interaction of the consultant with family systems and larger institutions - Highlighting special situations that may place specific demands on the clinician: working with refugees and survivors of torture or political violence, with separated families, and with patients with psychotic episodes This book is of valuable use to mental health practitioners who are working in multidisciplinary settings who seek to understand cultural difference in complex cases. Psychiatrists, psychologists, social workers, nurse practitioners, primary care providers and trainees in these disciplines will make thorough use of the material covered in this text.
Download or read book Wadi Flash Floods written by Tetsuya Sumi and published by Springer Nature. This book was released on 2021-10-11 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book brings together research studies, developments, and application-related flash flood topics on wadi systems in arid regions. The major merit of this comprehensive book is its focus on research and technical papers as well as case study applications in different regions worldwide that cover many topics and answer several scientific questions. The book chapters comprehensively and significantly highlight different scientific research disciplines related to wadi flash floods, including climatology, hydrological models, new monitoring techniques, remote sensing techniques, field investigations, international collaboration projects, risk assessment and mitigation, sedimentation and sediment transport, and groundwater quality and quantity assessment and management. In this book, the contributing authors (engineers, researchers, and professionals) introduce their recent scientific findings to develop suitable, applicable, and innovative tools for forecasting, mitigation, and water management as well as society development under seven main research themes as follows: Part 1. Wadi Flash Flood Challenges and Strategies Part 2. Hydrometeorology and Climate Changes Part 3. Rainfall–Runoff Modeling and Approaches Part 4. Disaster Risk Reduction and Mitigation Part 5. Reservoir Sedimentation and Sediment Yield Part 6. Groundwater Management Part 7. Application and Case Studies The book includes selected high-quality papers from five series of the International Symposium on Flash Floods in Wadi Systems (ISFF) that were held in 2015, 2016, 2017, 2018, and 2020 in Japan, Egypt, Oman, Morocco, and Japan, respectively. These collections of chapters could provide valuable guidance and scientific content not only for academics, researchers, and students but also for decision-makers in the MENA region and worldwide.
Download or read book Me Before You written by Jojo Moyes and published by Penguin. This book was released on 2012-12-31 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the #1 New York Times bestselling author of The Giver of Stars and the forthcoming Someone Else's Shoes, discover the love story that captured over 20 million hearts in Me Before You, After You, and Still Me. They had nothing in common until love gave them everything to lose . . . Louisa Clark is an ordinary girl living an exceedingly ordinary life—steady boyfriend, close family—who has barely been farther afield than their tiny village. She takes a badly needed job working for ex–Master of the Universe Will Traynor, who is wheelchair bound after an accident. Will has always lived a huge life—big deals, extreme sports, worldwide travel—and now he’s pretty sure he cannot live the way he is. Will is acerbic, moody, bossy—but Lou refuses to treat him with kid gloves, and soon his happiness means more to her than she expected. When she learns that Will has shocking plans of his own, she sets out to show him that life is still worth living. A Love Story for this generation and perfect for fans of John Green’s The Fault in Our Stars, Me Before You brings to life two people who couldn’t have less in common—a heartbreakingly romantic novel that asks, What do you do when making the person you love happy also means breaking your own heart?
