Search Results for "search-engines-information-retrieval-in-practice"

Search Engines

Search Engines

Information Retrieval in Practice

  • Author: Bruce Croft,Donald Metzler,Trevor Strohman
  • Publisher: Pearson Higher Ed
  • ISBN: 0133001598
  • Category: Computers
  • Page: 552
  • View: 7925
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This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. Search Engines: Information Retrieval in Practice is ideal for introductory information retrieval courses at the undergraduate and graduate level in computer science, information science and computer engineering departments. It is also a valuable tool for search engine and information retrieval professionals. Written by a leader in the field of information retrieval, Search Engines: Information Retrieval in Practice , is designed to give undergraduate students the understanding and tools they need to evaluate, compare and modify search engines. Coverage of the underlying IR and mathematical models reinforce key concepts. The book’s numerous programming exercises make extensive use of Galago, a Java-based open source search engine.

Suchmaschinen verstehen

Suchmaschinen verstehen

  • Author: Dirk Lewandowski
  • Publisher: Springer-Verlag
  • ISBN: 3662440148
  • Category: Computers
  • Page: 312
  • View: 7970
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Das Buch betrachtet das Thema Suchmaschinen ausgehend von der täglichen Recherche und führt in die technischen Grundlagen, in Recherchetechniken sowie die gesellschaftlichen und wirtschaftlichen Bedingungen der Recherche im Web ein. Suchmaschinen sind heute die wichtigsten Werkzeuge, um an Informationen zu gelangen. Wir verwenden Suchmaschinen täglich, meist ohne weiter darüber nachzudenken. Doch wie funktionieren diese Suchwerkzeuge eigentlich genau? Neben einer ausführlichen Darstellung der in den bekannten Suchmaschinen verwendeten Rankingverfahren wird auch ausführlich auf das Nutzerverhalten eingegangen, das wiederum die Ergebnisdarstellung prägt. Dazu kommen grundlegende Betrachtungen des Suchmaschinenmarkts, der Bedeutung der Suchmaschinenoptimierung und der Rolle der Suchmaschinen als technische Informationsvermittler. Nicht zuletzt wird auch die Seite der Recherche betrachtet und gezeigt, wie man mit den bekannten Suchmaschinen effizient recherchieren kann. Das Buch verhilft allen, die mit Suchmaschinen recherchieren oder sich beruflich mit der Optimierung, Aufbereitung und Sichtbarmachung von Inhalten beschäftigen, zu einem umfassenden Verständnis der Ansätze, Stärken und Schwächen verschiedener Suchmaschinen und der ihnen zugrunde liegenden Technologien.

Multilingual Information Retrieval

Multilingual Information Retrieval

From Research To Practice

  • Author: Carol Peters,Martin Braschler,Paul Clough
  • Publisher: Springer Science & Business Media
  • ISBN: 3642230075
  • Category: Computers
  • Page: 218
  • View: 5799
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We are living in a multilingual world and the diversity in languages which are used to interact with information access systems has generated a wide variety of challenges to be addressed by computer and information scientists. The growing amount of non-English information accessible globally and the increased worldwide exposure of enterprises also necessitates the adaptation of Information Retrieval (IR) methods to new, multilingual settings. Peters, Braschler and Clough present a comprehensive description of the technologies involved in designing and developing systems for Multilingual Information Retrieval (MLIR). They provide readers with broad coverage of the various issues involved in creating systems to make accessible digitally stored materials regardless of the language(s) they are written in. Details on Cross-Language Information Retrieval (CLIR) are also covered that help readers to understand how to develop retrieval systems that cross language boundaries. Their work is divided into six chapters and accompanies the reader step-by-step through the various stages involved in building, using and evaluating MLIR systems. The book concludes with some examples of recent applications that utilise MLIR technologies. Some of the techniques described have recently started to appear in commercial search systems, while others have the potential to be part of future incarnations. The book is intended for graduate students, scholars, and practitioners with a basic understanding of classical text retrieval methods. It offers guidelines and information on all aspects that need to be taken into consideration when building MLIR systems, while avoiding too many ‘hands-on details’ that could rapidly become obsolete. Thus it bridges the gap between the material covered by most of the classical IR textbooks and the novel requirements related to the acquisition and dissemination of information in whatever language it is stored.

Information Retrieval Methods for Multidisciplinary Applications

Information Retrieval Methods for Multidisciplinary Applications

  • Author: Zhongyu Lu
  • Publisher: IGI Global
  • ISBN: 1466638990
  • Category: Computers
  • Page: 325
  • View: 5111
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"This book provides innovative research on information gathering, web data mining, and automation systems, addressing multidisciplinary applications and focusing on theories and methods with an enterprise-wide perspective"--Provided by publisher.

Google-Mitarbeiter

Google-Mitarbeiter

Der erste Insider-Bericht aus dem Weltkonzern

  • Author: Douglas Edwards
  • Publisher: Redline Wirtschaft
  • ISBN: 3864142768
  • Category: Business & Economics
  • Page: 480
  • View: 8118
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1998 erblickte einer der einflussreichsten Internetkonzerne das Licht der Welt. Einer, der nicht nur die IT-Welt eroberte, sondern es obendrein geschafft hat, einen eigenen Begriff zu prägen. Googeln schaffte es sogar in den Duden. Die Suchmaschine ist heute für Millionen Menschen die Anlaufstelle Nummer 1, wenn es um die Beschaffung von Informationen geht. Und von der ersten Stunde an dabei war Google-Mitarbeiter Nr. 59, Douglas Edwards. Mit viel Humor berichtet er von den Anfängen, der ganz eigenen Google-Kultur und seinen ganz persönlichen Erfahrungen in der sehr speziellen Welt eines Internet-Start-ups auf dem Weg zum Global Player. Er beschreibt, wie Larry Page und Sergey Brin mit Eigensinn und einer leichten Arroganz Google dahin brachten, wo Google heute ist und wofür Google steht. Atmen wir quasi die Google-Luft in der Konzernzentrale und begeben uns mit Douglas Edwards auf die Reise durch das Google-Imperium. Dabei erzählt er uns viele persönliche Geschichten darüber, wie es ist, im wohl eigenwilligsten Konzern der Welt zu arbeiten.

Suchmaschinenoptimierung für Dummies

Suchmaschinenoptimierung für Dummies

  • Author: Peter Kent
  • Publisher: Wiley-VCH
  • ISBN: 9783527703173
  • Category: Computers
  • Page: 316
  • View: 9073
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Früher schaute man in die Gelben Seiten oder ins Lexikon, heutzutage ist die Recherche über's Internet für die meisten selbstverständlich geworden. Bei Suchmaschinen wie Google & Co. gut platziert zu sein, sollte daher auch zum Marketing einer jeden Firma gehören. Dieses Buch verrät, was man beachten sollte, was man tun und was man besser lassen sollte, um bei Suchmaschinen gut platziert zu sein.

E-Marketing: Concepts, Methodologies, Tools, and Applications

E-Marketing: Concepts, Methodologies, Tools, and Applications

Concepts, Methodologies, Tools, and Applications

  • Author: Management Association, Information Resources
  • Publisher: IGI Global
  • ISBN: 1466615990
  • Category: Business & Economics
  • Page: 1485
  • View: 5199
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The popularity of e-marketing has helped both small and large businesses to get their products and services message to an unbounded number of potential clients. Keeping in contact with your customers no longer require an extended period of time but rather mere seconds.E-Marketing: Concepts, Methodologies, Tools, and Applications presents a vital compendium of research detailing the latest case studies, architectures, frameworks, methodologies, and research on e-marketing. With contributions from authors around the world, this three-volume collection presents the most sophisticated research and developments from the field, relevant to researchers, academics, and practitioners alike. In order to stay abreast of the latest research, this book affords a vital look into electronic marketing research.

Statistik-Workshop für Programmierer

Statistik-Workshop für Programmierer

  • Author: Allen B. Downey
  • Publisher: O'Reilly Germany
  • ISBN: 3868993436
  • Category: Computers
  • Page: 160
  • View: 9199
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Wenn Sie programmieren können, beherrschen Sie bereits Techniken, um aus Daten Wissen zu extrahieren. Diese kompakte Einführung in die Statistik zeigt Ihnen, wie Sie rechnergestützt, anstatt auf mathematischem Weg Datenanalysen mit Python durchführen können. Praktischer Programmier-Workshop statt grauer Theorie: Das Buch führt Sie anhand eines durchgängigen Fallbeispiels durch eine vollständige Datenanalyse -- von der Datensammlung über die Berechnung statistischer Kennwerte und Identifikation von Mustern bis hin zum Testen statistischer Hypothesen. Gleichzeitig werden Sie mit statistischen Verteilungen, den Regeln der Wahrscheinlichkeitsrechnung, Visualisierungsmöglichkeiten und vielen anderen Arbeitstechniken und Konzepten vertraut gemacht. Statistik-Konzepte zum Ausprobieren: Entwickeln Sie über das Schreiben und Testen von Code ein Verständnis für die Grundlagen von Wahrscheinlichkeitsrechnung und Statistik: Überprüfen Sie das Verhalten statistischer Merkmale durch Zufallsexperimente, zum Beispiel indem Sie Stichproben aus unterschiedlichen Verteilungen ziehen. Nutzen Sie Simulationen, um Konzepte zu verstehen, die auf mathematischem Weg nur schwer zugänglich sind. Lernen Sie etwas über Themen, die in Einführungen üblicherweise nicht vermittelt werden, beispielsweise über die Bayessche Schätzung. Nutzen Sie Python zur Bereinigung und Aufbereitung von Rohdaten aus nahezu beliebigen Quellen. Beantworten Sie mit den Mitteln der Inferenzstatistik Fragestellungen zu realen Daten.

Wegweiser im Netz

Wegweiser im Netz

Qualität und Nutzung von Suchmaschinen

  • Author: Marcel Machill
  • Publisher: N.A
  • ISBN: 9783892047148
  • Category:
  • Page: 543
  • View: 2499
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Suchmaschinen sind die neuen >Gatekeeper im Internet. Sie kanalisieren unsere Aufmerksamkeit und haben entscheidenden Einfluss darauf, welche Inhalte wie zugänglich sind. Ohne sie sind Informationen im Netz nur schwer auffindbar. Allerdings: Nur wenige Nutzer wissen, wie man Suchmaschinen optimal bedient und wie sie funktionieren. Sie sind anfällig für Manipulationen (Spamming

Core Servlets und Java Server Pages.

Core Servlets und Java Server Pages.

Praktischer Leitfaden zur Entwicklung dynamischer Web-Applikationen. Ausführliche Erklärung unterstützender Technologien.

  • Author: Marty Hall,Larry Brown
  • Publisher: Pearson Deutschland GmbH
  • ISBN: 9783827266453
  • Category:
  • Page: 624
  • View: 8279
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Neuronale Netze selbst programmieren

Neuronale Netze selbst programmieren

Ein verständlicher Einstieg mit Python

  • Author: Tariq Rashid
  • Publisher: O'Reilly
  • ISBN: 3960101031
  • Category: Computers
  • Page: 232
  • View: 3511
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Neuronale Netze sind Schlüsselelemente des Deep Learning und der Künstlichen Intelligenz, die heute zu Erstaunlichem in der Lage sind. Sie sind Grundlage vieler Anwendungen im Alltag wie beispielsweise Spracherkennung, Gesichtserkennung auf Fotos oder die Umwandlung von Sprache in Text. Dennoch verstehen nur wenige, wie neuronale Netze tatsächlich funktionieren. Dieses Buch nimmt Sie mit auf eine unterhaltsame Reise, die mit ganz einfachen Ideen beginnt und Ihnen Schritt für Schritt zeigt, wie neuronale Netze arbeiten: - Zunächst lernen Sie die mathematischen Konzepte kennen, die den neuronalen Netzen zugrunde liegen. Dafür brauchen Sie keine tieferen Mathematikkenntnisse, denn alle mathematischen Ideen werden behutsam und mit vielen Illustrationen und Beispielen erläutert. Eine Kurzeinführung in die Analysis unterstützt Sie dabei. - Dann geht es in die Praxis: Nach einer Einführung in die populäre und leicht zu lernende Programmiersprache Python bauen Sie allmählich Ihr eigenes neuronales Netz mit Python auf. Sie bringen ihm bei, handgeschriebene Zahlen zu erkennen, bis es eine Performance wie ein professionell entwickeltes Netz erreicht. - Im nächsten Schritt tunen Sie die Leistung Ihres neuronalen Netzes so weit, dass es eine Zahlenerkennung von 98 % erreicht – nur mit einfachen Ideen und simplem Code. Sie testen das Netz mit Ihrer eigenen Handschrift und werfen noch einen Blick in das mysteriöse Innere eines neuronalen Netzes. - Zum Schluss lassen Sie das neuronale Netz auf einem Raspberry Pi Zero laufen. Tariq Rashid erklärt diese schwierige Materie außergewöhnlich klar und verständlich, dadurch werden neuronale Netze für jeden Interessierten zugänglich und praktisch nachvollziehbar.

Human Information Retrieval

Human Information Retrieval

  • Author: Warner
  • Publisher: MIT Press
  • ISBN: 0262258501
  • Category: Computers
  • Page: 200
  • View: 5968
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Information retrieval in the age of Internet search engines has become part of ordinary discourse and everyday practice: "Google" is a verb in common usage. Thus far, more attention has been given to practical understanding of information retrieval than to a full theoretical account. In Human Information Retrieval, Julian Warner offers a comprehensive overview of information retrieval, synthesizing theories from different disciplines (information and computer science, librarianship and indexing, and information society discourse) and incorporating such disparate systems as WorldCat and Google into a single, robust theoretical framework. There is a need for such a theoretical treatment, he argues, one that reveals the structure and underlying patterns of this complex field while remaining congruent with everyday practice. Warner presents a labor theoretic approach to information retrieval, building on his previously formulated distinction between semantic and syntactic mental labor, arguing that the description and search labor of information retrieval can be understood as both semantic and syntactic in character. Warner's information science approach is rooted in the humanities and the social sciences but informed by an understanding of information technology and information theory. The chapters offer a progressive exposition of the topic, with illustrative examples to explain the concepts presented. Neither narrowly practical nor largely speculative, Human Information Retrieval meets the contemporary need for a broader treatment of information and information systems.

Information Retrieval

Information Retrieval

Searching in the 21st Century

  • Author: Ayse Goker,John Davies
  • Publisher: John Wiley & Sons
  • ISBN: 9780470033630
  • Category: Technology & Engineering
  • Page: 320
  • View: 381
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This book is an essential reference to cutting-edge issues and future directions in information retrieval Information retrieval (IR) can be defined as the process of representing, managing, searching, retrieving, and presenting information. Good IR involves understanding information needs and interests, developing an effective search technique, system, presentation, distribution and delivery. The increased use of the Web and wider availability of information in this environment led to the development of Web search engines. This change has brought fresh challenges to a wider variety of users’ needs, tasks, and types of information. Today, search engines are seen in enterprises, on laptops, in individual websites, in library catalogues, and elsewhere. Information Retrieval: Searching in the 21st Century focuses on core concepts, and current trends in the field. This book focuses on: Information Retrieval Models User-centred Evaluation of Information Retrieval Systems Multimedia Resource Discovery Image Users’ Needs and Searching Behaviour Web Information Retrieval Mobile Search Context and Information Retrieval Text Categorisation and Genre in Information Retrieval Semantic Search The Role of Natural Language Processing in Information Retrieval: Search for Meaning and Structure Cross-language Information Retrieval Performance Issues in Parallel Computing for Information Retrieval This book is an invaluable reference for graduate students on IR courses or courses in related disciplines (e.g. computer science, information science, human-computer interaction, and knowledge management), academic and industrial researchers, and industrial personnel tracking information search technology developments to understand the business implications. Intermediate-advanced level undergraduate students on IR or related courses will also find this text insightful. Chapters are supplemented with exercises to stimulate further thinking.

Estimating the Query Difficulty for Information Retrieval

Estimating the Query Difficulty for Information Retrieval

  • Author: David Carmel,Elad Yom-Tov
  • Publisher: Morgan & Claypool Publishers
  • ISBN: 160845357X
  • Category: Computers
  • Page: 77
  • View: 3571
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Many information retrieval (IR) systems suffer from a radical variance in performance when responding to users' queries. Even for systems that succeed very well on average, the quality of results returned for some of the queries is poor. Thus, it is desirable that IR systems will be able to identify "difficult" queries so they can be handled properly. Understanding why some queries are inherently more difficult than others is essential for IR, and a good answer to this important question will help search engines to reduce the variance in performance, hence better servicing their customer needs. Estimating the query difficulty is an attempt to quantify the quality of search results retrieved for a query from a given collection of documents. This book discusses the reasons that cause search engines to fail for some of the queries, and then reviews recent approaches for estimating query difficulty in the IR field. It then describes a common methodology for evaluating the prediction quality of those estimators, and experiments with some of the predictors applied by various IR methods over several TREC benchmarks. Finally, it discusses potential applications that can utilize query difficulty estimators by handling each query individually and selectively, based upon its estimated difficulty. Table of Contents: Introduction - The Robustness Problem of Information Retrieval / Basic Concepts / Query Performance Prediction Methods / Pre-Retrieval Prediction Methods / Post-Retrieval Prediction Methods / Combining Predictors / A General Model for Query Difficulty / Applications of Query Difficulty Estimation / Summary and Conclusions

Innovations in Information Retrieval

Innovations in Information Retrieval

Perspectives for Theory and Practice

  • Author: Allen Foster,Pauline Rafferty
  • Publisher: Facet Publishing
  • ISBN: 1856046974
  • Category: Language Arts & Disciplines
  • Page: 156
  • View: 6220
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The advent of new information retrieval (IR) technologies and approaches to storage and retrieval provide communities with previously unheard of opportunities for mass documentation, digitization, and the recording of information in all its forms. This book introduces and contextualizes these developments and looks at supporting research in IR, the debates, theories and issues. Contributed by an international team of experts, each authored chapter provides a snapshot of changes in the field, as well as the importance of developing innovation, creativity and thinking in IR practice and research. Key discussion areas include: browsing in new information environments classification revisited: a web of knowledge approaches to fiction retrieval research music information retrieval research folksonomies, social tagging and information retrieval digital information interaction as semantic navigation assessing web search machines: a webometric approach. Readership: LIS professionals , researchers and students, and for all those interested in the future of IR.

Understanding Information Retrieval Systems

Understanding Information Retrieval Systems

Management, Types, and Standards

  • Author: Marcia J. Bates
  • Publisher: CRC Press
  • ISBN: 1466551356
  • Category: Business & Economics
  • Page: 752
  • View: 3694
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In order to be effective for their users, information retrieval (IR) systems should be adapted to the specific needs of particular environments. The huge and growing array of types of information retrieval systems in use today is on display in Understanding Information Retrieval Systems: Management, Types, and Standards, which addresses over 20 types of IR systems. These various system types, in turn, present both technical and management challenges, which are also addressed in this volume. In order to be interoperable in a networked environment, IR systems must be able to use various types of technical standards, a number of which are described in this book—often by their original developers. The book covers the full context of operational IR systems, addressing not only the systems themselves but also human user search behaviors, user-centered design, and management and policy issues. In addition to theory and practice of IR system design, the book covers Web standards and protocols, the Semantic Web, XML information retrieval, Web social mining, search engine optimization, specialized museum and library online access, records compliance and risk management, information storage technology, geographic information systems, and data transmission protocols. Emphasis is given to information systems that operate on relatively unstructured data, such as text, images, and music. The book is organized into four parts: Part I supplies a broad-level introduction to information systems and information retrieval systems Part II examines key management issues and elaborates on the decision process around likely information system solutions Part III illustrates the range of information retrieval systems in use today discussing the technical, operational, and administrative issues for each type Part IV discusses the most important organizational and technical standards needed for successful information retrieval This volume brings together authoritative articles on the different types of information systems and how to manage real-world demands such as digital asset management, network management, digital content licensing, data quality, and information system failures. It explains how to design systems to address human characteristics and considers key policy and ethical issues such as piracy and preservation. Focusing on web–based systems, the chapters in this book provide an excellent starting point for developing and managing your own IR systems.

String Processing and Information Retrieval

String Processing and Information Retrieval

19th International Symposium, SPIRE 2012, Cartagena de Indias, Colombia, October 21-25, 2012, Proceedings

  • Author: Liliana Calderon-Benavides,Cristina Gonzalez-Caro,Edgar Chavez,Nivio Ziviani
  • Publisher: Springer
  • ISBN: 3642341098
  • Category: Computers
  • Page: 412
  • View: 9477
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This book constitutes the refereed proceedings of the 19th International Symposium on String Processing and Information Retrieval, SPIRE 2012, held in Cartagena de Indias, Colombia, in October 2012. The 26 full papers, 13 short papers, and 3 keynote speeches were carefully reviewed and selected from 81 submissions. The following topics are covered: fundamentals algorithms in string processing and information retrieval; SP and IR techniques as applied to areas such as computational biology, DNA sequencing, and Web mining.

Information Retrieval

Information Retrieval

Implementing and Evaluating Search Engines

  • Author: Stefan Büttcher,Charles L. A. Clarke,Gordon V. Cormack
  • Publisher: MIT Press
  • ISBN: 0262026511
  • Category: Computers
  • Page: 606
  • View: 9987
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An introduction to information retrieval, the foundation for modern search engines, that emphasizes implementation and experimentation.

Next Generation Search Engines: Advanced Models for Information Retrieval

Next Generation Search Engines: Advanced Models for Information Retrieval

Advanced Models for Information Retrieval

  • Author: Jouis, Christophe
  • Publisher: IGI Global
  • ISBN: 1466603313
  • Category: Computers
  • Page: 560
  • View: 6606
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Recent technological progress in computer science, Web technologies, and the constantly evolving information available on the Internet has drastically changed the landscape of search and access to information. Current search engines employ advanced techniques involving machine learning, social networks, and semantic analysis. Next Generation Search Engines: Advanced Models for Information Retrieval is intended for scientists and decision-makers who wish to gain working knowledge about search in order to evaluate available solutions and to dialogue with software and data providers. The book aims to provide readers with a better idea of the new trends in applied research.

Advances in Focused Retrieval

Advances in Focused Retrieval

7th International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2008, Dagstuhl Castle, Germany, December 15-18, 2009. Revised and Selected Papers

  • Author: Shlomo Geva,Jaap Kamps,Andrew Trotman
  • Publisher: Springer Science & Business Media
  • ISBN: 3642037607
  • Category: Computers
  • Page: 484
  • View: 6650
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This book constitutes the thoroughly refereed proceedings of the 7th International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2008, held at Dagstuhl Castle, Germany, in December 2008. The aim of the INEX 2008 workshop was to bring together researchers who participated in the INEX 2008 campaign. Over the year leading up to the event, participating organizations contributed to the building of a large-scale XML test collection by creating topics, performing retrieval runs, and providing relevance assessments. The workshop concluded the results of this large-scale effort, summarized and addressed the issues encountered, and devised a work plan for the future evaluation of XML retrieval systems. The 49 papers included in this volume report the final results of INEX 2008. They have been divided into sections according to the seven tracks of the workshop, investigating various aspects of XML retrieval, from book search to entity ranking, including interaction aspects.