Web Dragons

Autor: Ian H. Witten
Publisher: Elsevier
ISBN: 0080469094
File Size: 21,94 MB
Format: PDF
Read: 277
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Web Dragons offers a perspective on the world of Web search and the effects of search engines and information availability on the present and future world. In the blink of an eye since the turn of the millennium, the lives of people who work with information have been utterly transformed. Everything we need to know is on the web. It's where we learn and play, shop and do business, keep up with old friends and meet new ones. Search engines make it possible for us to find the stuff we need to know. Search engines — web dragons — are the portals through which we access society's treasure trove of information. How do they stack up against librarians, the gatekeepers over centuries past? What role will libraries play in a world whose information is ruled by the web? How is the web organized? Who controls its contents, and how do they do it? How do search engines work? How can web visibility be exploited by those who want to sell us their wares? What's coming tomorrow, and can we influence it? As we witness the dawn of a new era, this book shows readers what it will look like and how it will change their world. Whoever you are: if you care about information, this book will open your eyes and make you blink. Presents a critical view of the idea of funneling information access through a small handful of gateways and the notion of a centralized index--and the problems that may cause Provides promising approaches for addressing the problems, such as the personalization of web services Presented by authorities in the field of digital libraries, web history, machine learning, and web and data mining Find more information at the author's site: webdragons.net

Mining Massive Data Sets For Security

Autor: Françoise Fogelman-Soulié
Publisher: IOS Press
ISBN: 1586038982
File Size: 41,34 MB
Format: PDF, Kindle
Read: 7678
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The real power for security applications will come from the synergy of academic and commercial research focusing on the specific issue of security. Special constraints apply to this domain, which are not always taken into consideration by academic research, but are critical for successful security applications: large volumes: techniques must be able to handle huge amounts of data and perform 'on-line' computation; scalability: algorithms must have processing times that scale well with ever growing volumes; automation: the analysis process must be automated so that information extraction can 'run on its own'; ease of use: everyday citizens should be able to extract and assess the necessary information; and robustness: systems must be able to cope with data of poor quality (missing or erroneous data). The NATO Advanced Study Institute (ASI) on Mining Massive Data Sets for Security, held in Italy, September 2007, brought together around ninety participants to discuss these issues. This publication includes the most important contributions, but can of course not entirely reflect the lively interactions which allowed the participants to exchange their views and share their experience. The bridge between academic methods and industrial constraints is systematically discussed throughout. This volume will thus serve as a reference book for anyone interested in understanding the techniques for handling very large data sets and how to apply them in conjunction for solving security issues.

Digital Watermarking And Steganography

Autor: Ingemar Cox
Publisher: Morgan Kaufmann
ISBN: 9780080555805
File Size: 80,15 MB
Format: PDF
Read: 3400
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Digital audio, video, images, and documents are flying through cyberspace to their respective owners. Unfortunately, along the way, individuals may choose to intervene and take this content for themselves. Digital watermarking and steganography technology greatly reduces the instances of this by limiting or eliminating the ability of third parties to decipher the content that he has taken. The many techiniques of digital watermarking (embedding a code) and steganography (hiding information) continue to evolve as applications that necessitate them do the same. The authors of this second edition provide an update on the framework for applying these techniques that they provided researchers and professionals in the first well-received edition. Steganography and steganalysis (the art of detecting hidden information) have been added to a robust treatment of digital watermarking, as many in each field research and deal with the other. New material includes watermarking with side information, QIM, and dirty-paper codes. The revision and inclusion of new material by these influential authors has created a must-own book for anyone in this profession. This new edition now contains essential information on steganalysis and steganography New concepts and new applications including QIM introduced Digital watermark embedding is given a complete update with new processes and applications

How To Build A Digital Library

Autor: Ian H. Witten
Publisher: Morgan Kaufmann
ISBN: 9780080890395
File Size: 32,37 MB
Format: PDF, ePub, Mobi
Read: 1561
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How to Build a Digital Library reviews knowledge and tools to construct and maintain a digital library, regardless of the size or purpose. A resource for individuals, agencies, and institutions wishing to put this powerful tool to work in their burgeoning information treasuries. The Second Edition reflects developments in the field as well as in the Greenstone Digital Library open source software. In Part I, the authors have added an entire new chapter on user groups, user support, collaborative browsing, user contributions, and so on. There is also new material on content-based queries, map-based queries, cross-media queries. There is an increased emphasis placed on multimedia by adding a "digitizing" section to each major media type. A new chapter has also been added on "internationalization," which will address Unicode standards, multi-language interfaces and collections, and issues with non-European languages (Chinese, Hindi, etc.). Part II, the software tools section, has been completely rewritten to reflect the new developments in Greenstone Digital Library Software, an internationally popular open source software tool with a comprehensive graphical facility for creating and maintaining digital libraries. Outlines the history of libraries on both traditional and digital Written for both technical and non-technical audiences and covers the entire spectrum of media, including text, images, audio, video, and related XML standards Web-enhanced with software documentation, color illustrations, full-text index, source code, and more

Keeping Found Things Found The Study And Practice Of Personal Information Management

Autor: William Jones
Publisher: Morgan Kaufmann
ISBN: 9780080554150
File Size: 42,52 MB
Format: PDF, ePub, Mobi
Read: 4160
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Keeping Found Things Found: The Study and Practice of Personal Information Management is the first comprehensive book on new 'favorite child' of R&D at Microsoft and elsewhere, personal information management (PIM). It provides a comprehensive overview of PIM as both a study and a practice of the activities people do, and need to be doing, so that information can work for them in their daily lives. It explores what good and better PIM looks like, and how to measure improvements. It presents key questions to consider when evaluating any new PIM informational tools or systems. This book is designed for R&D professionals in HCI, data mining and data management, information retrieval, and related areas, plus developers of tools and software that include PIM solutions. Focuses exclusively on one of the most interesting and challenging problems in today's world Explores what good and better PIM looks like, and how to measure improvements Presents key questions to consider when evaluating any new PIM informational tools or systems

Managing Gigabytes

Autor: Ian H. Witten
Publisher: Morgan Kaufmann
ISBN: 9781558605701
File Size: 14,40 MB
Format: PDF, Kindle
Read: 229
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In this fully updated second edition of the highly acclaimed Managing Gigabytes, authors Witten, Moffat, and Bell continue to provide unparalleled coverage of state-of-the-art techniques for compressing and indexing data. Whatever your field, if you work with large quantities of information, this book is essential reading--an authoritative theoretical resource and a practical guide to meeting the toughest storage and access challenges. It covers the latest developments in compression and indexing and their application on the Web and in digital libraries. It also details dozens of powerful techniques supported by mg, the authors' own system for compressing, storing, and retrieving text, images, and textual images. mg's source code is freely available on the Web. * Up-to-date coverage of new text compression algorithms such as block sorting, approximate arithmetic coding, and fat Huffman coding * New sections on content-based index compression and distributed querying, with 2 new data structures for fast indexing * New coverage of image coding, including descriptions of de facto standards in use on the Web (GIF and PNG), information on CALIC, the new proposed JPEG Lossless standard, and JBIG2 * New information on the Internet and WWW, digital libraries, web search engines, and agent-based retrieval * Accompanied by a public domain system called MG which is a fully worked-out operational example of the advanced techniques developed and explained in the book * New appendix on an existing digital library system that uses the MG software

Bibliotheken Gestalten Zukunft

Autor: Evelinde Hutzler
Publisher: Universitätsverlag Göttingen
ISBN: 3940344435
File Size: 34,43 MB
Format: PDF, Docs
Read: 2316
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Libraries are not passive to the rapid and profound digital change. They have recognized and accepted the task and opportunity to actively participate in shaping a sustainable information infrastructure for a modern knowledge society. They use the opportunities of new information technologies to build digital libraries and to expand its service range by offering innovative services. Acknowledged experts from libraries and science in this book give an in-depth insight into current developments in this very important sector for libraries. The topics of the contributions in this volume range of approaches and strategies to improve the information structure of academic libraries on concrete examples of the establishment and development of digital libraries in practice to prospects for future development opportunities and areas of action.

Google S Pagerank And Beyond

Autor: Amy N. Langville
Publisher: Princeton University Press
ISBN: 140083032X
File Size: 76,67 MB
Format: PDF
Read: 144
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Why doesn't your home page appear on the first page of search results, even when you query your own name? How do other web pages always appear at the top? What creates these powerful rankings? And how? The first book ever about the science of web page rankings, Google's PageRank and Beyond supplies the answers to these and other questions and more. The book serves two very different audiences: the curious science reader and the technical computational reader. The chapters build in mathematical sophistication, so that the first five are accessible to the general academic reader. While other chapters are much more mathematical in nature, each one contains something for both audiences. For example, the authors include entertaining asides such as how search engines make money and how the Great Firewall of China influences research. The book includes an extensive background chapter designed to help readers learn more about the mathematics of search engines, and it contains several MATLAB codes and links to sample web data sets. The philosophy throughout is to encourage readers to experiment with the ideas and algorithms in the text. Any business seriously interested in improving its rankings in the major search engines can benefit from the clear examples, sample code, and list of resources provided. Many illustrative examples and entertaining asides MATLAB code Accessible and informal style Complete and self-contained section for mathematics review