Download or read book METHODES STATISTIQUES DE SELECTION D ARCHITECTURES NEURONALES written by DOMINIQUE.. URBANI and published by . This book was released on 1995 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES RESEAUX DE NEURONES FORMELS CONNAISSENT DEPUIS QUELQUES ANNEES UN DEVELOPPEMENT IMPORTANT, NOTAMMENT DANS LE DOMAINE DE L'AUTOMATIQUE ET DE LA COMMANDE DE PROCESSUS. CEPENDANT, PEU DE TRAVAUX ABORDENT LE PROBLEME DE LA SELECTION DE MODELES: LA SELECTION CONSISTE A DETERMINER LES ENTREES ET L'ARCHITECTURE DU MODELE AFIN QUE CELUI-CI SOIT TOUT A LA FOIS PERFORMANT (POSSEDANT DE BONNES CAPACITES DE GENERALISATION) ET PARCIMONIEUX (LA COMPLEXITE DE SA STRUCTURE EST MINIMALE, AFIN DE REDUIRE LE NOMBRE DE CALCUL). D'AUTRE PART, L'INTERET CROISSANT POUR LES RESEAUX DE NEURONES A CONDUIT A LA CONCEPTION DE CIRCUITS DEDIES AUX APPLICATIONS NEURONALES. OR, LA REALISATION DE TELS CIRCUITS EST D'AUTANT PLUS FACILE QUE LEUR STRUCTURE EST SIMPLE. DANS CETTE DOUBLE OPTIQUE, NOUS NOUS SOMMES INTERESSES AU PROBLEME DE LA SELECTION DE MODELES NEURONAUX. DES METHODES HEURISTIQUES DE SELECTION ONT ETE PROPOSEES DANS LA LITTERATURE, MAIS NOUS AVONS CHOISI D'UTILISER DES METHODES STATISTIQUES, QUI REPOSENT SUR DES BASES THEORIQUES SOLIDES. LE PROBLEME A ETE ABORDE DANS LE CADRE PARTICULIER DE LA MODELISATION DE PROCESSUS DYNAMIQUES NON LINEAIRES. APRES AVOIR POSE LE PROBLEME DE LA MODELISATION DE PROCESSUS, NOUS PROPOSONS UNE PROCEDURE DE SELECTION DE MODELES NARX QUI SE DECOMPOSE EN TROIS PHASES: DANS LA PREMIERE PHASE, LE PROCESSUS EST ETUDIE DANS PLUSIEURS ZONES LOCALES DE FONCTIONNEMENT, DANS LESQUELLES SON COMPORTEMENT PEUT ETRE APPROCHE A L'AIDE DE MODELES SIMPLES, LINEAIRES PAR RAPPORT AUX PARAMETRES. UN MODELE NEURONAL DU PROCESSUS, VALIDE SUR TOUT LE DOMAINE DE FONCTIONNEMENT DU PROCESSUS, ET DONT LES ENTREES SONT CELLES SELECTIONNEES LORS DE LA PREMIERE PHASE, EST ALORS CONSTRUIT. DE NOUVELLES SELECTIONS SONT EFFECTUEES POUR REDUIRE SI NECESSAIRE SES ENTREES (DEUXIEME PHASE), PUIS LE NOMBRE DE SES NEURONES (TROISIEME PHASE). CETTE PROCEDURE EST APPLIQUEE A PLUSIEURS PROCESSUS NARX SIMULES

Download or read book METHODES STATISTIQUES DE SELECTION DE MODELES NEURONAUX APPLICATIONS FINANCIERES ET BANCAIRES written by HERVE.. STOPPIGLIA and published by . This book was released on 1997 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL PRESENTE DANS CE MEMOIRE TRAITE DE L'EVALUATION, A L'AIDE DE RESEAUX DE NEURONES, DE L'ETAT DE SANTE FINANCIERE DE COLLECTIVITES LOCALES OU D'ENTREPRISES. DANS UN PREMIER TEMPS, NOUS RAPPROCHONS CETTE EVALUATION D'UN PROBLEME DE CLASSIFICATION ; NOUS EXPLIQUONS POURQUOI CE TYPE DE PROBLEME PEUT ETRE AVANTAGEUSEMENT RESOLU AVEC DES METHODES STATISTIQUES DE CLASSIFICATION COMME LES RESEAUX DE NEURONES. LES CHAPITRES SUIVANTS PRESENTENT ET DEFINISSENT PLUS PRECISEMENT LES CONCEPTS DE LA CLASSIFICATION, LES METHODES USUELLES DE CLASSIFICATION, LES RESEAUX DE NEURONES AINSI QUE L'APPRENTISSAGE DE CEUX-CI. DANS LES APPLICATIONS ENVISAGEES, L'INDIVIDU A CLASSER (COLLECTIVITE LOCALE OU ENTREPRISE) PEUT ETRE DECRIT PAR UNE TRES GRANDE QUANTITE DE VARIABLES (DONNEES COMPTABLES, FISCALES, SOCIO-ECONOMIQUES, ETC) ; CE CONSTAT NOUS A CONDUIT A ETUDIER LES METHODES DE SELECTION DE MODELES. NOUS PROPOSONS UNE METHODE STATISTIQUE ORIGINALE DE SELECTION DES VARIABLES DESCRIPTIVES PERTINENTES. CETTE METHODE SERT EGALEMENT A LA SELECTION DU MODELE NEURONAL. LA DERNIERE PARTIE DE CE MEMOIRE CONCERNE LES APPLICATIONS INDUSTRIELLES DE CES TRAVAUX ; LA PREMIERE CONCERNE L'ANALYSE FINANCIERE DES ENTREPRISES, LA SECONDE L'ANALYSE FINANCIERE DES COLLECTIVITES LOCALES. L'APPORT ORIGINAL DE CETTE ETUDE CONCERNE TROIS DOMAINES : - SELECTION DE VARIABLES : NOUS AJOUTONS UNE VARIABLE ALEATOIRE AUX AUTRES VARIABLES DESCRIPTIVES AFIN DE DISTINGUER CELLES QUI SONT REELLEMENT PERTINENTES. - SELECTION DE MODELES : NOUS UTILISONS LA METHODE PRECEDENTE POUR SELECTIONNER LES SEULS NEURONES UTILES DANS UN RESEAU DE NEURONES A UNE COUCHE CACHEE. - CLASSIFICATION : NOUS INVERSONS LA FORMULE DE BAYES POUR ESTIMER LES FONCTIONS DENSITE DE PROBABILITE AVEC DES APPROXIMATEURS TELS QUE LES RESEAUX DE NEURONES. EN CE QUI CONCERNE L'ANALYSE FINANCIERE DES ENTREPRISES, CE TRAVAIL A DEBOUCHE SUR UNE APPLICATION OPERATIONNELLE A LA CAISSE DES DEPOTS ET CONSIGNATIONS DEPUIS 1995.

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 Canadian Journal of Civil Engineering written by and published by . This book was released on 1999 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book PASCAL written by and published by . This book was released on 1994 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Neural Networks in Hydrology written by R.S. Govindaraju and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: R. S. GOVINDARAJU and ARAMACHANDRA RAO School of Civil Engineering Purdue University West Lafayette, IN. , USA Background and Motivation The basic notion of artificial neural networks (ANNs), as we understand them today, was perhaps first formalized by McCulloch and Pitts (1943) in their model of an artificial neuron. Research in this field remained somewhat dormant in the early years, perhaps because of the limited capabilities of this method and because there was no clear indication of its potential uses. However, interest in this area picked up momentum in a dramatic fashion with the works of Hopfield (1982) and Rumelhart et al. (1986). Not only did these studies place artificial neural networks on a firmer mathematical footing, but also opened the dOOf to a host of potential applications for this computational tool. Consequently, neural network computing has progressed rapidly along all fronts: theoretical development of different learning algorithms, computing capabilities, and applications to diverse areas from neurophysiology to the stock market. . Initial studies on artificial neural networks were prompted by adesire to have computers mimic human learning. As a result, the jargon associated with the technical literature on this subject is replete with expressions such as excitation and inhibition of neurons, strength of synaptic connections, learning rates, training, and network experience. ANNs have also been referred to as neurocomputers by people who want to preserve this analogy.

Download or read book FinTech in Financial Inclusion Machine Learning Applications in Assessing Credit Risk written by Majid Bazarbash and published by International Monetary Fund. This book was released on 2019-05-17 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in digital technology and big data have allowed FinTech (financial technology) lending to emerge as a potentially promising solution to reduce the cost of credit and increase financial inclusion. However, machine learning (ML) methods that lie at the heart of FinTech credit have remained largely a black box for the nontechnical audience. This paper contributes to the literature by discussing potential strengths and weaknesses of ML-based credit assessment through (1) presenting core ideas and the most common techniques in ML for the nontechnical audience; and (2) discussing the fundamental challenges in credit risk analysis. FinTech credit has the potential to enhance financial inclusion and outperform traditional credit scoring by (1) leveraging nontraditional data sources to improve the assessment of the borrower’s track record; (2) appraising collateral value; (3) forecasting income prospects; and (4) predicting changes in general conditions. However, because of the central role of data in ML-based analysis, data relevance should be ensured, especially in situations when a deep structural change occurs, when borrowers could counterfeit certain indicators, and when agency problems arising from information asymmetry could not be resolved. To avoid digital financial exclusion and redlining, variables that trigger discrimination should not be used to assess credit rating.

Download or read book Health Systems the Challenge of Change written by M. K. Chytil and published by . This book was released on 1992 with total page 1640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Data Analysis written by Wolfgang Gaul and published by Springer. This book was released on 2000-08-09 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Data Analysis" in the broadest sense is the general term for a field of activities of ever-increasing importance in a time called the information age. It covers new areas with such trendy labels as, e.g., data mining or web mining as well as traditional directions emphazising, e.g., classification or knowledge organization. Leading researchers in data analysis have contributed to this volume and delivered papers on aspects ranging from scientific modeling to practical application. They have devoted their latest contributions to a book edited to honor a colleague and friend, Hans-Hermann Bock, who has been active in this field for nearly thirty years.

Download or read book Feature Extraction written by Isabelle Guyon and published by Springer. This book was released on 2008-11-16 with total page 765 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is both a reference for engineers and scientists and a teaching resource, featuring tutorial chapters and research papers on feature extraction. Until now there has been insufficient consideration of feature selection algorithms, no unified presentation of leading methods, and no systematic comparisons.

Download or read book Cognition Language and Aging written by Heather Harris Wright and published by John Benjamins Publishing Company. This book was released on 2016-03-16 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Age-related changes in cognitive and language functions have been extensively researched over the past half-century. The older adult represents a unique population for studying cognition and language because of the many challenges that are presented with investigating this population, including individual differences in education, life experiences, health issues, social identity, as well as gender. The purpose of this book is to provide an advanced text that considers these unique challenges and assembles in one source current information regarding (a) language in the aging population and (b) current theories accounting for age-related changes in language function. A thoughtful and comprehensive review of current research spanning different disciplines that study aging will achieve this purpose. Such disciplines include linguistics, psychology, sociolinguistics, neurosciences, cognitive sciences, and communication sciences. As of January 2019, this e-book is freely available, thanks to the support of libraries working with Knowledge Unlatched.

Download or read book Medical Image Computing and Computer Assisted Intervention MICCAI 2012 written by Nicholas Ayache and published by Springer. This book was released on 2012-08-28 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three-volume set LNCS 7510, 7511, and 7512 constitutes the refereed proceedings of the 15th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2012, held in Nice, France, in October 2012. Based on rigorous peer reviews, the program committee carefully selected 252 revised papers from 781 submissions for presentation in three volumes. The third volume includes 79 papers organized in topical sections on diffusion imaging: from acquisition to tractography; image acquisition, segmentation and recognition; image registration; neuroimage analysis; analysis of microscopic and optical images; image segmentation; diffusion weighted imaging; computer-aided diagnosis and planning; and microscopic image analysis.

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1998 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Modeling of Mechanical Systems written by Mohamed Haddar and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 5th International Congress on Design and Modeling of Mechanical Systems (CMSM) was held in Djerba, Tunisia on March 25-27, 2013 and followed four previous successful editions, which brought together international experts in the fields of design and modeling of mechanical systems, thus contributing to the exchange of information and skills and leading to a considerable progress in research among the participating teams. The fifth edition of the congress (CMSM ́2013), organized by the Unit of Mechanics, Modeling and Manufacturing (U2MP) of the National School of Engineers of Sfax, Tunisia, the Mechanical Engineering Laboratory (MBL) of the National School of Engineers of Monastir, Tunisia and the Mechanics Laboratory of Sousse (LMS) of the National School of Engineers of Sousse, Tunisia, saw a significant increase of the international participation. This edition brought together nearly 300 attendees who exposed their work on the following topics: mechatronics and robotics, dynamics of mechanical systems, fluid structure interaction and vibroacoustics, modeling and analysis of materials and structures, design and manufacturing of mechanical systems. This book is the proceedings of CMSM ́2013 and contains a careful selection of high quality contributions, which were exposed during various sessions of the congress. The original articles presented here provide an overview of recent research advancements accomplished in the field mechanical engineering.

Download or read book Anti ageing Medicine written by Astrid Stuckelberger and published by vdf Hochschulverlag AG. This book was released on 2008 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 21st century technological development is revolutionizing medicine and health care, bringing new hopes to human suffering by offering cures and treatments which were unthinkable a few decades ago. This is where anti-ageing medicine finds its niche. Anti-ageing medicine aims at slowing, arresting, and reversing phenomena associated with ageing by merging biotechnological innovation and engineered solutions. Ideally, by means of the newest medical technology, the "body machinery" should be kept fit and at peak performance all life long. Early detection of age-related dysfunction should thus be "fixed" at any age with interventions such as metabolic fine tuning, enhancement, regeneration, restoration or replacement of "body parts" (i.e. organs, skin, bone or muscle). It covers a vast array of domains: from cell therapy to pharmaceutical interventions, from bio-surgery to aesthetic surgery, from human enhancement to fortified food, from smart housing and robots to toxic-free environments. Anti-ageing medicine holds promises but also significant risks and safety issues which are addressesd in this book. It presents the latest scientific evidence on what works or does not work. It also provides public policy recommendations to ensure the protection of consumers and their rights while encouraging research and development. This book is intended for academics, health professionals, business persons, consumers and policy-makers interested in the latest evidence and ethical issues about anti-ageing medicine.

Download or read book Adaptive and Natural Computing Algorithms written by Bartlomiej Beliczynski and published by Springer. This book was released on 2007-04-02 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two volume set LNCS 4431 and LNCS 4432 constitutes the refereed proceedings of the 8th International Conference on Adaptive and Natural Computing Algorithms, ICANNGA 2007, held in Warsaw, Poland, in April 2007. The 178 revised full papers presented were carefully reviewed and selected from a total of 474 submissions.

Download or read book Data Analysis and Decision Support written by Daniel Baier and published by Springer Science & Business Media. This book was released on 2006-05-06 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is a great privilege and pleasure to write a foreword for a book honor ing Wolfgang Gaul on the occasion of his sixtieth birthday. Wolfgang Gaul is currently Professor of Business Administration and Management Science and the Head of the Institute of Decision Theory and Management Science, Faculty of Economics, University of Karlsruhe (TH), Germany. He is, by any measure, one of the most distinguished and eminent scholars in the world today. Wolfgang Gaul has been instrumental in numerous leading research initia tives and has achieved an unprecedented level of success in facilitating com munication among researchers in diverse disciplines from around the world. A particularly remarkable and unique aspect of his work is that he has been a leading scholar in such diverse areas of research as graph theory and net work models, reliability theory, stochastic optimization, operations research, probability theory, sampling theory, cluster analysis, scaling and multivariate data analysis. His activities have been directed not only at these and other theoretical topics, but also at applications of statistical and mathematical tools to a multitude of important problems in computer science (e.g., w- mining), business research (e.g., market segmentation), management science (e.g., decision support systems) and behavioral sciences (e.g., preference mea surement and data mining). All of his endeavors have been accomplished at the highest level of professional excellence.