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Author: Jean Martinet (enseignant-chercheur en Informatique).)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
La démocratisation des systèmes d'acquisition d'images numériques, combinée à l'essor du Web, nécessite la définition de modèles et d systèmes de Recherche d'Information (RI) capables d'accéder rapidement aux images recherchées par des utilisateurs dans de grands volumes de données. L'objectif de ce travail est de définir un modèle de RI adapté aux images, en intégrant une sémantique riche pour 1 représentation de ces données visuelles et des requêtes des utilisateurs, tout en permettant l'application à de grands corpus. Notre proposition fusionne le modèle vectoriel de RI - modèle éprouvé en RI textuelle - avec le formalisme des Graphes Conceptuels (GC), en se fondant sur l'utilisation de graphes étoiles (GC élémentaires constitués d'une relation connectée à des concepts représentant les objets de l'image) comme descripteurs d'images. Une pondération originale de ces graphes étoiles (fondée sur la taille et la position des objets, ainsi que sur l'hétérogénéité des images) est définie et validée expérimentalement avec soin. Nous montrons que l'intégration de relations dans le modèle vectoriel par le biais des graphes étoiles augmente la précision du système, et la rend comparable à celle des systèmes basés sur la projection de graphes, tout en diminuant le temps de traitement des requêtes des utilisateurs.
Author: Jean Martinet (enseignant-chercheur en Informatique).)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
La démocratisation des systèmes d'acquisition d'images numériques, combinée à l'essor du Web, nécessite la définition de modèles et d systèmes de Recherche d'Information (RI) capables d'accéder rapidement aux images recherchées par des utilisateurs dans de grands volumes de données. L'objectif de ce travail est de définir un modèle de RI adapté aux images, en intégrant une sémantique riche pour 1 représentation de ces données visuelles et des requêtes des utilisateurs, tout en permettant l'application à de grands corpus. Notre proposition fusionne le modèle vectoriel de RI - modèle éprouvé en RI textuelle - avec le formalisme des Graphes Conceptuels (GC), en se fondant sur l'utilisation de graphes étoiles (GC élémentaires constitués d'une relation connectée à des concepts représentant les objets de l'image) comme descripteurs d'images. Une pondération originale de ces graphes étoiles (fondée sur la taille et la position des objets, ainsi que sur l'hétérogénéité des images) est définie et validée expérimentalement avec soin. Nous montrons que l'intégration de relations dans le modèle vectoriel par le biais des graphes étoiles augmente la précision du système, et la rend comparable à celle des systèmes basés sur la projection de graphes, tout en diminuant le temps de traitement des requêtes des utilisateurs.
Author: Jean Martinet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 166
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Book Description
La démocratisation des systèmes d'acquisition d'images numériques, combinée à l'essor du Web, nécessite la définition de modèles et d systèmes de Recherche d'Information (RI) capables d'accéder rapidement aux images recherchées par des utilisateurs dans de grands volumes de données. L'objectif de ce travail est de définir un modèle de RI adapté aux images, en intégrant une sémantique riche pour 1 représentation de ces données visuelles et des requêtes des utilisateurs, tout en permettant l'application à de grands corpus. Notre proposition fusionne le modèle vectoriel de RI - modèle éprouvé en RI textuelle - avec le formalisme des Graphes Conceptuels (GC), en se fondant sur l'utilisation de graphes étoiles (GC élémentaires constitués d'une relation connectée à des concepts représentant les objets de l'image) comme descripteurs d'images. Une pondération originale de ces graphes étoiles (fondée sur la taille et la position des objets, ainsi que sur l'hétérogénéité des images) est définie et validée expérimentalement avec soin. Nous montrons que l'intégration de relations dans le modèle vectoriel par le biais des graphes étoiles augmente la précision du système, et la rend comparable à celle des systèmes basés sur la projection de graphes, tout en diminuant le temps de traitement des requêtes des utilisateurs.
Author: David E. Losada
Publisher: Springer Science & Business Media
ISBN: 3540252959
Category : Computers
Languages : en
Pages : 588
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Book Description
This book constitutes the refereed proceedings of the 27th European Conference on Information Retrieval Research, ECIR 2005, held in Santiago de Compostela, Spain in March 2005. The 34 revised full papers presented together with 2 invited keynote papers and 17 selected poster papers were carefully reviewed and selected from 124 papers submitted. The papers are organized in topical sections on peer-to-peer, information retrieval models, text summarization, information retrieval methods, text classification and fusion, user studies and evaluation, multimedia retrieval, and Web information retrieval.
Author: Kei Hoshi
Publisher: Springer Nature
ISBN: 3030429547
Category : Computers
Languages : en
Pages : 133
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Book Description
Interaction design is acknowledged as an important area of study, and more especially of design practice. Hugely popular and profitable consumer devices, such as mobile phones and tablets, are seen as owing much of their success to the way they have been designed, not least their interface characteristics and the styles of interaction that they support. Interaction design studies point to the importance of a user-centred approach, whereby products are in principle designed around their future users’ needs and capacities. However, it is the market, and marketing, that determine which products are available for people to interact with and to a great extent what their designed characteristics are. Primitive Interaction Design is based on the realisation that designers need to be freed from the marketplace and industry pressure, and that the usual user-centred arguments are not enough to make a practical difference. Interaction designers are invited to cast themselves as “savages”, as if wielding primitive tools in concrete physical environments. A theoretical perspective is presented that opens up new possibilities for designers to explore fresh ideas and practices, including the importance of conscious and unconscious being, emptiness and trickery. Building on this, a set of design tools for primitive design work is presented and illustrated with practical examples. This book will be of particular interest to undergraduate and graduate students and researchers in interaction design and HCI, as well as practicing interaction designers and computer professions. It will also appeal to those with an interest in psychology, anthropology, cultural studies, design and the future of technology in society.
Author: Kamran Parsaye
Publisher: John Wiley & Sons
ISBN:
Category : Computers
Languages : en
Pages : 506
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Book Description
Database systems; Object orientation; Expert systems; Hypermedia; Text management and retrieval; Intelligent databases.
Author: Claude Cohen-Tannoudji
Publisher: John Wiley & Sons
ISBN: 3527345558
Category : Science
Languages : en
Pages : 790
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Book Description
This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Author: Martin Lindstrom
Publisher: Currency
ISBN: 0385523890
Category : Business & Economics
Languages : en
Pages : 274
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Book Description
NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.
Author: Richard Escadafal
Publisher: IRD Orstom
ISBN:
Category : Geographic information systems
Languages : fr
Pages : 674
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Book Description
ISSS congress remote sensing
Author: H. A. Thurston
Publisher: Courier Corporation
ISBN: 0486154947
Category : Mathematics
Languages : en
Pages : 146
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Book Description
This book explores arithmetic's underlying concepts and their logical development, in addition to a detailed, systematic construction of the number systems of rational, real, and complex numbers. 1956 edition.
Author: Alexander V. Sergienko
Publisher: CRC Press
ISBN: 1420026607
Category : Science
Languages : en
Pages : 248
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Book Description
All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.
