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Research on social networks has exploded over the last decade. To a large extent, this has been fueled by the spectacular growth of social media and online social networking sites, which continue growing at a very fast pace, as well as by the increasing availability of very large social network datasets for purposes of research. A rich body of this research has been devoted to the analysis of the propagation of information, influence, innovations, infections, practices and customs through networks. Can we build models to explain the way these propagations occur? How can we validate our models against any available real datasets consisting of a social network and propagation traces that occurred in the past? These are just some questions studied by researchers in this area. Information propagation models find applications in viral marketing, outbreak detection, finding key blog posts to read in order to catch important stories, finding leaders or trendsetters, information feed ranking, etc. A number of algorithmic problems arising in these applications have been abstracted and studied extensively by researchers under the garb of influence maximization. This book starts with a detailed description of well-established diffusion models, including the independent cascade model and the linear threshold model, that have been successful at explaining propagation phenomena. We describe their properties as well as numerous extensions to them, introducing aspects such as competition, budget, and time-criticality, among many others. We delve deep into the key problem of influence maximization, which selects key individuals to activate in order to influence a large fraction of a network. Influence maximization in classic diffusion models including both the independent cascade and the linear threshold models is computationally intractable, more precisely #P-hard, and we describe several approximation algorithms and scalable heuristics that have been proposed in the literature. Finally, we also deal with key issues that need to be tackled in order to turn this research into practice, such as learning the strength with which individuals in a network influence each other, as well as the practical aspects of this research including the availability of datasets and software tools for facilitating research. We conclude with a discussion of various research problems that remain open, both from a technical perspective and from the viewpoint of transferring the results of research into industry strength applications.

Computer networks. --- Data structures (Computer science). --- Information theory. --- Computer Communication Networks. --- Data Structures and Information Theory.

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Der Begriff Information wird heute fast inflationär benutzt. Es seien nur die Informationstechnik, unser Informationszeitalter, die Informatik, die Macht der Information, die Informationsflut, Information und Dokumentation sowie Medien und Archive genannt. Doch leider wird dabei „Information“ zuweilen intuitiv und oft sogar recht individuell benutzt. Horst Völz stellt vier typische Informationsklassen gegenüber und erklärt die leblose Natur, das Leben, die menschliche Kommunikation und die Shannonsche Nachrichtentechnik.  Der Inhalt Information und Wirkung im Sinne eines verallgemeinerten Verstärkerprinzips (Kybernetik) Information im Sinne der sprachlichen Kommunikation (Zeichen-, Abbild-Prinzip) Information im Kontext der Information (Rechnersimulation) Shannon- und quantentheoretische Information (Berechnungsgrundlagen, Codierung, Fehlerkorrektur Die Zielgruppen Dozierende und Studierende der Medien-, Kommunikations-, Verhaltens- und Sprachwissenschaft, Informatik, Philosophie und Wissenschaftstheorie Allgemein am Thema Interessierte, Nachrichtentechniker Der Autor Prof. Dr. Horst Völz hat wichtige Arbeiten zur Technik der Speicherung und zu Grundlagen der Information geleistet, die u.a. in vielen Büchern und rund 300 Fachartikeln erschienen sind. Derzeit ist er im Bereich Medienwissenschaften der Humboldt-Universität tätig.

Computers. --- Computer science. --- Data structures (Computer science). --- Information Systems and Communication Service. --- Computer Science, general. --- Data Structures and Information Theory.

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Near Field Communication is a radio frequency technology that allows objects, such as mobile phones, computers, tags, or posters, to exchange information wirelessly across a small distance. This report on the progress of Near Field Communication reviews the features and functionality of the technology and summarizes the broad spectrum of its current and anticipated applications. We explore the development of NFC technology in recent years, introduce the major stakeholders in the NFC ecosystem, and project its movement toward mainstream adoption. Several examples of early implementation of NFC in libraries are highlighted, primarily involving the use of NFC to enhance discovery by linking books or other physical objects with digital information about library resources, but also including applications of NFC to collection management and self-checkout. Future uses of NFC in libraries, such as smart posters or other enhanced outreach, are envisioned as well as the potential for the "touch paradigm" and "Internet of things" to transform the ways in which library users interact with the information environment. Conscious of the privacy and security of our patrons, we also address continuing concerns related to NFC technology and its expected applications, recommending caution, awareness, and education as immediate next steps for librarians.

Mathematics. --- Data structures (Computer science). --- Information theory. --- Library science. --- Education. --- Data Structures and Information Theory. --- Library Science.

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Pro Exchange Server 2013 Administration is your best-in-class companion for gaining a deep, thorough understanding of Microsoft’s powerful enterprise collaboration and communications server. Author Jaap Wesselius is at your side as you administer every facet of Exchange Server 2013, revealing tips, tricks, and little known facts that will make your administration life simpler and more effective. Along with revealing what’s new in Exchange Server 2013, this well-paced, deeply engaging tutorial provides detailed deployment guidance, for upgraders and migrators as well as for organizations entirely new to the Exchange platform. The book details how all of the major Exchange components fit together, from SMTP messages to all kinds of clients. It also provides in-depth configuration examples with an eye toward creating scalable, reliable, and secure installations. Additionally, this guide covers the tools and techniques for monitoring an Exchange environment and troubleshooting when things go wrong. With Pro Exchange Server 2013 Administration, you will: • Learn how to install Exchange Server fresh or upgrade from a previous version • Get a comprehensive understanding of Exchange, with thorough coverage of Mailbox server and Client Access server • Understand the tools and techniques for configuring and managing your Exchange deployment to ensure scalability, reliability, efficiency and security • Learn how to monitor your deployment and prepare for any problems and how to troubleshoot any problems that do arise.

Computer science --- Computer. Automation --- computers --- informatica --- computerkunde --- Microsoft software. --- Microsoft .NET Framework. --- Data structures (Computer science). --- Microsoft and .NET. --- Data Structures and Information Theory. --- Microsoft Exchange server.

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Expert Oracle RAC Performance Diagnostics and Tuning provides comprehensive coverage of the features, technology and principles for testing and tuning RAC databases. The book takes a deep look at optimizing RAC databases by following a methodical approach based on scientific analysis rather than using a speculative approach, twisting and turning knobs and gambling on the system. The book starts with the basic concepts of tuning methodology, capacity planning, and architecture. Author Murali Vallath then dissects the various tiers of the testing implementation, including the operating system, the network, the application, the storage, the instance, the database, and the grid infrastructure. He also introduces tools for performance optimization and thoroughly covers each aspect of the tuning process, using many real-world examples, analyses, and solutions from the field that provide you with a solid, practical, and replicable approach to tuning a RAC environment. The book concludes with troubleshooting guidance and quick reference of all the scripts used in the book. Expert Oracle RAC Performance Diagnostics and Tuning covers scenarios and details never discussed before in any other performance tuning books. If you have a RAC database, this book is a requirement. Get your copy today. Takes you through optimizing the various tiers of the RAC environment. Provides real life case studies, analysis and solutions from the field. Maps a methodical approach to testing, tuning and diagnosing the cluster.

Computer science --- Computer. Automation --- computers --- informatica --- computerkunde --- Database management. --- Data structures (Computer science). --- Database Management. --- Data Structures and Information Theory. --- Oracle (Computer file)