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Scalability Challenges In Web Search Engines

Author : B. Barla Cambazoglu
ISBN : 9781627058131
Genre : Computers
File Size : 63.14 MB
Format : PDF, ePub
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In this book, we aim to provide a fairly comprehensive overview of the scalability and efficiency challenges in large-scale web search engines. More specifically, we cover the issues involved in the design of three separate systems that are commonly available in every web-scale search engine: web crawling, indexing, and query processing systems. We present the performance challenges encountered in these systems and review a wide range of design alternatives employed as solution to these challenges, specifically focusing on algorithmic and architectural optimizations. We discuss the available optimizations at different computational granularities, ranging from a single computer node to a collection of data centers. We provide some hints to both the practitioners and theoreticians involved in the field about the way large-scale web search engines operate and the adopted design choices. Moreover, we survey the efficiency literature, providing pointers to a large number of relatively important research papers. Finally, we discuss some open research problems in the context of search engine efficiency.
Category: Computers

Advanced Topics In Information Retrieval

Author : Massimo Melucci
ISBN : 3642209467
Genre : Computers
File Size : 86.33 MB
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Information retrieval is the science concerned with the effective and efficient retrieval of documents starting from their semantic content. It is employed to fulfill some information need from a large number of digital documents. Given the ever-growing amount of documents available and the heterogeneous data structures used for storage, information retrieval has recently faced and tackled novel applications. In this book, Melucci and Baeza-Yates present a wide-spectrum illustration of recent research results in advanced areas related to information retrieval. Readers will find chapters on e.g. aggregated search, digital advertising, digital libraries, discovery of spam and opinions, information retrieval in context, multimedia resource discovery, quantum mechanics applied to information retrieval, scalability challenges in web search engines, and interactive information retrieval evaluation. All chapters are written by well-known researchers, are completely self-contained and comprehensive, and are complemented by an integrated bibliography and subject index. With this selection, the editors provide the most up-to-date survey of topics usually not addressed in depth in traditional (text)books on information retrieval. The presentation is intended for a wide audience of people interested in information retrieval: undergraduate and graduate students, post-doctoral researchers, lecturers, and industrial researchers.
Category: Computers

Business Information Systems

Author : Witold Abramowicz
ISBN : 9783642303593
Genre : Business & Economics
File Size : 55.11 MB
Format : PDF, Kindle
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This book contains the refereed proceedings of the 15th International Conference on Business Information Systems, BIS 2012, held in Vilnius, Lithuania, in May 2012. The 26 revised full papers were carefully reviewed and selected from 70 submissions. They are grouped into nine sessions on business process discovery, business process verification, service architectures, collaborative BIS, data management, Web search applications, BIS in finance, decision support, and specific BIS issues. The volume is completed by an invited paper on "Information Systems and Business and Information Systems Engineering."
Category: Business & Economics

Digital Libraries

Author : S. C. Jindal
ISBN : 8182051126
Genre : Digital libraries
File Size : 75.7 MB
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Category: Digital libraries


Author : National Research Council
ISBN : 0309171687
Genre : Law
File Size : 44.78 MB
Format : PDF, Docs
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Digital information and networks challenge the core practices of libraries, archives, and all organizations with intensive information management needs in many respectsâ€"not only in terms of accommodating digital information and technology, but also through the need to develop new economic and organizational models for managing information. LC21: A Digital Strategy for the Library of Congress discusses these challenges and provides recommendations for moving forward at the Library of Congress, the world’s largest library. Topics covered in LC21 include digital collections, digital preservation, digital cataloging (metadata), strategic planning, human resources, and general management and budgetary issues. The book identifies and elaborates upon a clear theme for the Library of Congress that is applicable more generally: the digital age calls for much more collaboration and cooperation than in the past. LC21 demonstrates that information-intensive organizations will have to change in fundamental ways to survive and prosper in the digital age.
Category: Law

Advanced Web Technologies And Applications

Author : Jeffrey Xu Yu
ISBN : 9783540213710
Genre : Computers
File Size : 27.99 MB
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The Asia-Paci?c region has emerged in recent years as one of the fastest g- wing regions in the world in the use of Web technologies as well as in making signi?cant contributions to WWW research and development. Since the ?rst Asia-Paci?c Web conference in 1998, APWeb has continued to provide a forum for researchers, professionals, and industrial practitioners from around the world to share their rapidly evolving knowledge and to report new advances in WWW technologies and applications. APWeb 2004 received an overwhelming 386 full-paper submissions, including 375 research papers and 11 industrial papers from 20 countries and regions: A- tralia,Canada,China,France,Germany,Greece,HongKong,India,Iran,Japan, Korea, Norway, Singapore, Spain, Switzerland, Taiwan, Turkey, UK, USA, and Vietnam. Each submission was carefully reviewed by three members of the p- gram committee. Among the 386 submitted papers, 60 regular papers, 24 short papers, 15 poster papers, and 3 industrial papers were selected to be included in the proceedings. The selected papers cover a wide range of topics including Web services, Web intelligence, Web personalization, Web query processing, Web - ching, Web mining, text mining, data mining and knowledge discovery, XML database and query processing, work?ow management, E-commerce, data - rehousing, P2P systems and applications, Grid computing, and networking. The paper entitled “Towards Adaptive Probabilistic Search in Unstructured P2P - stems”, co-authored by Linhao Xu, Chenyun Dai, Wenyuan Cai, Shuigeng Zhou, and Aoying Zhou, was awarded the best APWeb 2004 student paper.
Category: Computers

Middleware 2005

Author : Gustavo Alonso
ISBN : 3540303235
Genre : Computers
File Size : 67.17 MB
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Today, middleware is a key part of almost any application. Gone are the days when middleware was only used in the IT industry for high-end applications. Rather than middleware being part of the IT world, today IT applications r- resent only one aspect of middleware. With the increase in distribution, network capacity, and widespread deployment of computing devices (in homes, auto- biles, mobile phones, etc.), middleware has surpassed the importance of oper- ing systemsastheplatformwhereapplicationdevelopmentanddeploymenttake place. This makes middleware very exciting as a research area but also a very challenging one since it encompasses many di?erent concepts and techniques from a wide varietyof ?elds: networking,distributed systems, softwareengine- ing, performance analysis, computer architecture, and data management. Middleware 2005 in Grenoble, France, was the 6th edition of an increasingly successfulconference.Thescopeofthe conferencehasbeenslowlywideningwith every edition to accommodate new ?elds and applications. This year we made a considerable e?ort to reach out to other communities who are also active in the general area of middleware — sensor networks, networks in general, databases, software engineering— a fact that is re?ected in the variety of submissions.
Category: Computers

Scalable And Secure Internet Services And Architecture

Author : Cheng-Zhong Xu
ISBN : 9781420035209
Genre : Computers
File Size : 39.63 MB
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Scalable and Secure Internet Services and Architecture provides an in-depth analysis of many key scaling technologies. Topics include: server clusters and load balancing; QoS-aware resource management; server capacity planning; Web caching and prefetching; P2P overlay network; mobile code and security; and mobility support for adaptive grid computing. The author discusses each topic by first defining a problem, then reviewing current representative approaches for solving it. He then describes in detail the underlying principles of the technologies and the application of these principles, along with balanced coverage of concepts and engineering trade-offs. The book demonstrates the effectiveness of the technologies via rigorous mathematical modeling and analysis, simulation, and practical implementations. It blends technologies in a unified framework for scalable and secure Internet services, delivering a systematic treatment based upon the author's cutting-edge research experience. This volume describes in breadth and depth advanced scaling technologies that support media streaming, e-commerce, grid computing, personalized content delivery, distributed file sharing, network management, and other Internet applications.
Category: Computers

Global Information Technologies

Author : Felix B. Tan
ISBN : 1599049392
Genre : Computers
File Size : 59.79 MB
Format : PDF
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"This collection compiles research in all areas of the global information domain. It examines culture in information systems, IT in developing countries, global e-business, and the worldwide information society, providing critical knowledge to fuel the future work of researchers, academicians and practitioners in fields such as information science, political science, international relations, sociology, and many more"--Provided by publisher.
Category: Computers

Database And Xml Technologies

Author : Denilson Barbosa
ISBN : 9783540752875
Genre : Business & Economics
File Size : 56.35 MB
Format : PDF, Mobi
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This book constitutes the refereed proceedings of the 5th International XML Database Symposium, XSym 2007, held in Vienna, Austria, in September 2007 in conjunction with the International Conference on Very Large Data Bases, VLDB 2007.The 8 revised full papers together with 2 invited talks and the extended abstract of 1 panel session were carefully reviewed and selected from 25 submissions. Covering all current aspects of core database technology for XML data management, XML and data integration, and development and deployment of XML applications, the papers are organized in topical sections on XPath query answering, XQuery evaluation and performance, as well as XML updates, temporal XML data and concurrency.
Category: Business & Economics