The massive volume of data generated in modern applications can overwhelm our ability to conveniently transmit, store, and index it. For many scenarios, building a compact summary of a dataset that is vastly smaller enables flexibility and efficiency in a range of queries over the data, in exchange for some approximation. This comprehensive introduction to data summarization, aimed at practitioners and students, showcases the algorithms, their behavior, and the mathematical underpinnings of their operation. The coverage starts with simple sums and approximate counts, building to more advanced probabilistic structures such as the Bloom Filter, distinct value summaries, sketches, and quantile summaries. Summaries are described for specific types of data, such as geometric data, graphs, and vectors and matrices. The authors offer detailed descriptions of and pseudocode for key algorithms that have been incorporated in systems from companies such as Google, Apple, Microsoft, Netflix and Twitter.
Examines the media industry in an age of disruption, due to advances in digital technology, politically traded organizations and changing media tastes and values.
The way in which products and services are delivered to consumers, through branches and retail outlets, or more generally through a network of distribution channels, remains fundamentally important for maintaining a competitive advantage for a very wide range of businesses. This is true within domestic markets, but especially so for increasingly global corporations, as shareholder pressure for continued growth drives businesses into ever more widespread geographical markets. Arguing that more complex markets demand more sophisticated spatial analysis, this book discusses the application of location planning techniques to generate competitive advantage in a variety of business sectors in a changing retail environment. The series of techniques are analysed, from relatively straightforward branch scorecards to sophisticated applications of geographical information systems (GIS), spatial modelling and mathematical optimisation. Also explored are the changing dynamics of the impact of more restrictive planning environments in many countries on how retailers find new locations for growth and respond to changing consumer needs and wants. The book is essential reading for students and scholars alike working in geography, economics, business management, planning, finance and industry studies.
A COMPANION TO HEALTH AND MEDICAL GEOGRAPHY A Companion to Health and Medical Geography provides an essential starting point for anyone interested in studying the role of geography and of geographers, both past and present, in promoting an understanding of issues relating to health and illness. Whilst thoroughly mapping out the territory covered by the sub-discipline and examining changes in focus and terminology, this book offers a discussion of the major themes from differing methodological and theoretical perspectives. Questions of class, ethnicity, gender, age, and sexuality are covered throughout the text and case studies within chapters draw upon scholarship from around the globe in order to illuminate key points. Organized to promote dialogue and encourage health and medical geographers to rethink sub-disciplinary boundaries, this Companion provides a unique account of the history of the field and its future potential and possibilities.
This volume provides a snapshot of the current state of the art in data mining, presenting it both in terms of technical developments and industrial applications. The collection of chapters is based on works presented at the Australasian Data Mining conferences and industrial forums. Authors include some of Australia's leading researchers and practitioners in data mining. The volume also contains chapters by regional and international authors.
Describes basic principles and recent developments in approximate query processing. It focuses on four key synopses: random samples, histograms, wavelets, and sketches. It considers issues such as accuracy, space and time efficiency, optimality, practicality, range of applicability, error bounds on query answers, and incremental maintenance.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This collection of essays sheds light on one of the finest literary talents of the 20th century. fifty-seven excerpts of interviews, personal impressions, diary entries, articles, essays, and literary pieces reveal the private life of Greene--opinionated, charming, articulate, controversial.
Of the many blackguards who left their bloodstained mark on history, the foulest of them all was the pirate Yellowbeard. His name struck terror into the hearts of gentlefolk in the days when Queen Anne was a monarch rather than a table. Until recently, however, Yellowbeard's exploits were lost in the swirling mists of time. That oversight has now been corrected with this hilarious spoof on the pirate adventure genre. According to the author, Monty Python member Graham Chapman, Yellowbeard tells "the true story of Treasure Island, all the bits that Robert Louis Stevenson didn't want to tell. Yellowbeard is a vile buccaneer so scurrilolus he makes Long John Silver look like a tinhorn. He puts 'rat' back into 'pirate." Yellowbeard contains Chapman's original novel and screenplay, plus interviews with John Daly, the film's producer, and cast members Cheech and Chong, Nigel Planer, Peter Boyle, and others. Its timely release coincides with the Broadway premier of Monty Python's Spamalot.
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