Querying A Web Of Linked Data

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Querying a Web of Linked Data

Author : O. Hartig
Publisher : IOS Press
ISBN 13 : 1614996318
Total Pages : 262 pages
Book Rating : 4.6/5 (149 download)

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Book Synopsis Querying a Web of Linked Data by : O. Hartig

Download or read book Querying a Web of Linked Data written by O. Hartig and published by IOS Press. This book was released on 2016-04-26 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, an increasing number of organizations and individuals have contributed to the Semantic Web by publishing data according to the Linked Data principles. In addition, a significant body of Semantic Web research exists that studies various aspects of knowledge representation and automated reasoning over collections of such data. However, a challenge that is crucial for achieving the vision of a Semantic Web – but that has not yet been studied to a comparable extent – is to enable automated software agents to operate directly on decentralized Linked Data that is distributed over the WWW. In particular, fundamental questions related to querying this data on the WWW have received very limited research attention. This book contributes towards filling this gap by studying the foundations of declarative queries over Linked Data on the WWW. Our particular focus in this book are approaches to use the SPARQL query language and execute queries by traversing Linked Data live during the query execution process. More specifically, we first provide formal foundations to adapt SPARQL to the given context. Thereafter, we use an abstract machine model to formally show computational feasibility and related properties of the resulting types of SPARQL queries. Additionally, we investigate fundamental properties of applying the traversal-based approach to query execution that is tailored to the use case of querying Linked Data directly on the WWW.

Data Management and Query Processing in Semantic Web Databases

Author : Sven Groppe
Publisher : Springer Science & Business Media
ISBN 13 : 3642193579
Total Pages : 273 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Data Management and Query Processing in Semantic Web Databases by : Sven Groppe

Download or read book Data Management and Query Processing in Semantic Web Databases written by Sven Groppe and published by Springer Science & Business Media. This book was released on 2011-04-29 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Semantic Web, which is intended to establish a machine-understandable Web, is currently changing from being an emerging trend to a technology used in complex real-world applications. A number of standards and techniques have been developed by the World Wide Web Consortium (W3C), e.g., the Resource Description Framework (RDF), which provides a general method for conceptual descriptions for Web resources, and SPARQL, an RDF querying language. Recent examples of large RDF data with billions of facts include the UniProt comprehensive catalog of protein sequence, function and annotation data, the RDF data extracted from Wikipedia, and Princeton University’s WordNet. Clearly, querying performance has become a key issue for Semantic Web applications. In his book, Groppe details various aspects of high-performance Semantic Web data management and query processing. His presentation fills the gap between Semantic Web and database books, which either fail to take into account the performance issues of large-scale data management or fail to exploit the special properties of Semantic Web data models and queries. After a general introduction to the relevant Semantic Web standards, he presents specialized indexing and sorting algorithms, adapted approaches for logical and physical query optimization, optimization possibilities when using the parallel database technologies of today’s multicore processors, and visual and embedded query languages. Groppe primarily targets researchers, students, and developers of large-scale Semantic Web applications. On the complementary book webpage readers will find additional material, such as an online demonstration of a query engine, and exercises, and their solutions, that challenge their comprehension of the topics presented.

Linked Data Management

Author : Andreas Harth
Publisher : CRC Press
ISBN 13 : 1466582413
Total Pages : 566 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Linked Data Management by : Andreas Harth

Download or read book Linked Data Management written by Andreas Harth and published by CRC Press. This book was released on 2016-04-19 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Linked Data Management presents techniques for querying and managing Linked Data that is available on today's Web. The book shows how the abundance of Linked Data can serve as fertile ground for research and commercial applications.The text focuses on aspects of managing large-scale collections of Linked Data. It offers a detailed introduction to L

New Directions in Web Data Management 1

Author : Athena Vakali
Publisher : Springer Science & Business Media
ISBN 13 : 3642175503
Total Pages : 357 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis New Directions in Web Data Management 1 by : Athena Vakali

Download or read book New Directions in Web Data Management 1 written by Athena Vakali and published by Springer Science & Business Media. This book was released on 2011-01-19 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the major issues in the Web data management related to technologies and infrastructures, methodologies and techniques as well as applications and implementations. Emphasis is placed on Web engineering and technologies, Web graph managing, searching and querying and the importance of social Web.

Linked Data

Author : Tom Heath
Publisher : Springer Nature
ISBN 13 : 303179432X
Total Pages : 122 pages
Book Rating : 4.0/5 (317 download)

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Book Synopsis Linked Data by : Tom Heath

Download or read book Linked Data written by Tom Heath and published by Springer Nature. This book was released on 2022-05-31 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The World Wide Web has enabled the creation of a global information space comprising linked documents. As the Web becomes ever more enmeshed with our daily lives, there is a growing desire for direct access to raw data not currently available on the Web or bound up in hypertext documents. Linked Data provides a publishing paradigm in which not only documents, but also data, can be a first class citizen of the Web, thereby enabling the extension of the Web with a global data space based on open standards - the Web of Data. In this Synthesis lecture we provide readers with a detailed technical introduction to Linked Data. We begin by outlining the basic principles of Linked Data, including coverage of relevant aspects of Web architecture. The remainder of the text is based around two main themes - the publication and consumption of Linked Data. Drawing on a practical Linked Data scenario, we provide guidance and best practices on: architectural approaches to publishing Linked Data; choosing URIs and vocabularies to identify and describe resources; deciding what data to return in a description of a resource on the Web; methods and frameworks for automated linking of data sets; and testing and debugging approaches for Linked Data deployments. We give an overview of existing Linked Data applications and then examine the architectures that are used to consume Linked Data from the Web, alongside existing tools and frameworks that enable these. Readers can expect to gain a rich technical understanding of Linked Data fundamentals, as the basis for application development, research or further study. Table of Contents: List of Figures / Introduction / Principles of Linked Data / The Web of Data / Linked Data Design Considerations / Recipes for Publishing Linked Data / Consuming Linked Data / Summary and Outlook

Linked Data

Author : Luke Ruth
Publisher : Simon and Schuster
ISBN 13 : 163835216X
Total Pages : 402 pages
Book Rating : 4.6/5 (383 download)

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Book Synopsis Linked Data by : Luke Ruth

Download or read book Linked Data written by Luke Ruth and published by Simon and Schuster. This book was released on 2013-12-30 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary Linked Data presents the Linked Data model in plain, jargon-free language to Web developers. Avoiding the overly academic terminology of the Semantic Web, this new book presents practical techniques, using everyday tools like JavaScript and Python. About this Book The current Web is mostly a collection of linked documents useful for human consumption. The evolving Web includes data collections that may be identified and linked so that they can be consumed by automated processes. The W3C approach to this is Linked Data and it is already used by Google, Facebook, IBM, Oracle, and government agencies worldwide. Linked Data presents practical techniques for using Linked Data on the Web via familiar tools like JavaScript and Python. You'll work step-by-step through examples of increasing complexity as you explore foundational concepts such as HTTP URIs, the Resource Description Framework (RDF), and the SPARQL query language. Then you'll use various Linked Data document formats to create powerful Web applications and mashups. Written to be immediately useful to Web developers, this book requires no previous exposure to Linked Data or Semantic Web technologies. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. What's Inside Finding and consuming Linked Data Using Linked Data in your applications Building Linked Data applications using standard Web techniques About the Authors David Wood is co-chair of the W3C's RDF Working Group. Marsha Zaidman served as CS chair at University of Mary Washington. Luke Ruth is a Linked Data developer on the Callimachus Project. Michael Hausenblas led the Linked Data Research Centre. Table of Contents PART 1 THE LINKED DATA WEB Introducing Linked Data RDF: the data model for Linked Consuming Linked Data PART 2 TAMING LINKED DATA Creating Linked Data with SPARQL—querying the Linked PART 3 LINKED DATA IN THE WILD Enhancing results from search RDF database fundamentals Datasets PART 4 PULLING IT ALL TOGETHER Callimachus: a Linked Data Publishing Linked Data—a recap The evolving Web

Linked Democracy

Author : Marta Poblet
Publisher : Springer
ISBN 13 : 303013363X
Total Pages : 141 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Linked Democracy by : Marta Poblet

Download or read book Linked Democracy written by Marta Poblet and published by Springer. This book was released on 2019-05-28 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book shows the factors linking information flow, social intelligence, rights management and modelling with epistemic democracy, offering licensed linked data along with information about the rights involved. This model of democracy for the web of data brings new challenges for the social organisation of knowledge, collective innovation, and the coordination of actions. Licensed linked data, licensed linguistic linked data, right expression languages, semantic web regulatory models, electronic institutions, artificial socio-cognitive systems are examples of regulatory and institutional design (regulations by design). The web has been massively populated with both data and services, and semantically structured data, the linked data cloud, facilitates and fosters human-machine interaction. Linked data aims to create ecosystems to make it possible to browse, discover, exploit and reuse data sets for applications. Rights Expression Languages semi-automatically regulate the use and reuse of content.

Linked Open Data -- Creating Knowledge Out of Interlinked Data

Author : Sören Auer
Publisher : Springer
ISBN 13 : 3319098462
Total Pages : 218 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Linked Open Data -- Creating Knowledge Out of Interlinked Data by : Sören Auer

Download or read book Linked Open Data -- Creating Knowledge Out of Interlinked Data written by Sören Auer and published by Springer. This book was released on 2014-07-31 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Linked Open Data (LOD) is a pragmatic approach for realizing the Semantic Web vision of making the Web a global, distributed, semantics-based information system. This book presents an overview on the results of the research project “LOD2 -- Creating Knowledge out of Interlinked Data”. LOD2 is a large-scale integrating project co-funded by the European Commission within the FP7 Information and Communication Technologies Work Program. Commencing in September 2010, this 4-year project comprised leading Linked Open Data research groups, companies, and service providers from across 11 European countries and South Korea. The aim of this project was to advance the state-of-the-art in research and development in four key areas relevant for Linked Data, namely 1. RDF data management; 2. the extraction, creation, and enrichment of structured RDF data; 3. the interlinking and fusion of Linked Data from different sources and 4. the authoring, exploration and visualization of Linked Data.

Reasoning Web. Reasoning and the Web in the Big Data Era

Author : Manolis Koubarakis
Publisher : Springer
ISBN 13 : 3319105876
Total Pages : 397 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Reasoning Web. Reasoning and the Web in the Big Data Era by : Manolis Koubarakis

Download or read book Reasoning Web. Reasoning and the Web in the Big Data Era written by Manolis Koubarakis and published by Springer. This book was released on 2014-09-03 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the lecture notes of the 10th Reasoning Web Summer School 2014, held in Athens, Greece, in September 2014. In 2014, the lecture program of the Reasoning Web introduces students to recent advances in big data aspects of semantic web and linked data, and the fundamentals of reasoning techniques that can be used to tackle big data applications.

Learning SPARQL

Author : Bob DuCharme
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 1449313027
Total Pages : 255 pages
Book Rating : 4.4/5 (493 download)

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Book Synopsis Learning SPARQL by : Bob DuCharme

Download or read book Learning SPARQL written by Bob DuCharme and published by "O'Reilly Media, Inc.". This book was released on 2011-07-16 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get hands-on experience with SPARQL, the RDF query language that's become a key component of the semantic web. With this concise book, you will learn how to use the latest version of this W3C standard to retrieve and manipulate the increasing amount of public and private data available via SPARQL endpoints. Several open source and commercial tools already support SPARQL, and this introduction gets you started right away. Begin with how to write and run simple SPARQL 1.1 queries, then dive into the language's powerful features and capabilities for manipulating the data you retrieve. Learn what you need to know to add to, update, and delete data in RDF datasets, and give web applications access to this data. Understand SPARQL’s connection with RDF, the semantic web, and related specifications Query and combine data from local and remote sources Copy, convert, and create new RDF data Learn how datatype metadata, standardized functions, and extension functions contribute to your queries Incorporate SPARQL queries into web-based applications

Data Lakes

Author : Anne Laurent
Publisher : John Wiley & Sons
ISBN 13 : 1786305852
Total Pages : 244 pages
Book Rating : 4.7/5 (863 download)

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Book Synopsis Data Lakes by : Anne Laurent

Download or read book Data Lakes written by Anne Laurent and published by John Wiley & Sons. This book was released on 2020-06-03 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of a data lake is less than 10 years old, but they are already hugely implemented within large companies. Their goal is to efficiently deal with ever-growing volumes of heterogeneous data, while also facing various sophisticated user needs. However, defining and building a data lake is still a challenge, as no consensus has been reached so far. Data Lakes presents recent outcomes and trends in the field of data repositories. The main topics discussed are the data-driven architecture of a data lake; the management of metadata supplying key information about the stored data, master data and reference data; the roles of linked data and fog computing in a data lake ecosystem; and how gravity principles apply in the context of data lakes. A variety of case studies are also presented, thus providing the reader with practical examples of data lake management.

Semantic Applications

Author : Thomas Hoppe
Publisher : Springer
ISBN 13 : 366255433X
Total Pages : 284 pages
Book Rating : 4.6/5 (625 download)

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Book Synopsis Semantic Applications by : Thomas Hoppe

Download or read book Semantic Applications written by Thomas Hoppe and published by Springer. This book was released on 2018-04-13 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes methodologies for developing semantic applications. Semantic applications are software applications which explicitly or implicitly use the semantics, i.e. the meaning of a domain terminology, in order to improve usability, correctness, and completeness. An example is semantic search, where synonyms and related terms are used for enriching the results of a simple text-based search. Ontologies, thesauri or controlled vocabularies are the centerpiece of semantic applications. The book includes technological and architectural best practices for corporate use. The authors are experts from industry and academia with experience in developing semantic applications.

Learning SPARQL

Author : Bob DuCharme
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 1449371477
Total Pages : 472 pages
Book Rating : 4.4/5 (493 download)

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Book Synopsis Learning SPARQL by : Bob DuCharme

Download or read book Learning SPARQL written by Bob DuCharme and published by "O'Reilly Media, Inc.". This book was released on 2013-07-03 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gain hands-on experience with SPARQL, the RDF query language that’s bringing new possibilities to semantic web, linked data, and big data projects. This updated and expanded edition shows you how to use SPARQL 1.1 with a variety of tools to retrieve, manipulate, and federate data from the public web as well as from private sources. Author Bob DuCharme has you writing simple queries right away before providing background on how SPARQL fits into RDF technologies. Using short examples that you can run yourself with open source software, you’ll learn how to update, add to, and delete data in RDF datasets. Get the big picture on RDF, linked data, and the semantic web Use SPARQL to find bad data and create new data from existing data Use datatype metadata and functions in your queries Learn techniques and tools to help your queries run more efficiently Use RDF Schemas and OWL ontologies to extend the power of your queries Discover the roles that SPARQL can play in your applications

Linked Data

Author : Sherif Sakr
Publisher : Springer
ISBN 13 : 3319735152
Total Pages : 236 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Linked Data by : Sherif Sakr

Download or read book Linked Data written by Sherif Sakr and published by Springer. This book was released on 2018-03-01 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes efficient and effective techniques for harnessing the power of Linked Data by tackling the various aspects of managing its growing volume: storing, querying, reasoning, provenance management and benchmarking. To this end, Chapter 1 introduces the main concepts of the Semantic Web and Linked Data and provides a roadmap for the book. Next, Chapter 2 briefly presents the basic concepts underpinning Linked Data technologies that are discussed in the book. Chapter 3 then offers an overview of various techniques and systems for centrally querying RDF datasets, and Chapter 4 outlines various techniques and systems for efficiently querying large RDF datasets in distributed environments. Subsequently, Chapter 5 explores how streaming requirements are addressed in current, state-of-the-art RDF stream data processing. Chapter 6 covers performance and scaling issues of distributed RDF reasoning systems, while Chapter 7 details benchmarks for RDF query engines and instance matching systems. Chapter 8 addresses the provenance management for Linked Data and presents the different provenance models developed. Lastly, Chapter 9 offers a brief summary, highlighting and providing insights into some of the open challenges and research directions. Providing an updated overview of methods, technologies and systems related to Linked Data this book is mainly intended for students and researchers who are interested in the Linked Data domain. It enables students to gain an understanding of the foundations and underpinning technologies and standards for Linked Data, while researchers benefit from the in-depth coverage of the emerging and ongoing advances in Linked Data storing, querying, reasoning, and provenance management systems. Further, it serves as a starting point to tackle the next research challenges in the domain of Linked Data management.

Efficient Optimization and Processing of Queries Over Text-rich Graph-structured Data

Author : Günter Ladwig
Publisher : KIT Scientific Publishing
ISBN 13 : 3731500159
Total Pages : 254 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Efficient Optimization and Processing of Queries Over Text-rich Graph-structured Data by : Günter Ladwig

Download or read book Efficient Optimization and Processing of Queries Over Text-rich Graph-structured Data written by Günter Ladwig and published by KIT Scientific Publishing. This book was released on 2014-05-13 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many databases today capture both, structured and unstructured data. Making use of such hybrid data has become an important topic in research and industry. The efficient evaluation of hybrid data queries is the main topic of this thesis. Novel techniques are proposed that improve the whole processing pipeline, from indexes and query optimization to run-time processing. The contributions are evaluated in extensive experiments showing that the proposed techniques improve upon the state of the art.

Research and Advanced Technology for Digital Libraries

Author : Norbert Fuhr
Publisher : Springer
ISBN 13 : 3319439979
Total Pages : 483 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis Research and Advanced Technology for Digital Libraries by : Norbert Fuhr

Download or read book Research and Advanced Technology for Digital Libraries written by Norbert Fuhr and published by Springer. This book was released on 2016-08-12 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the 20th International Conference on Theory and Practice of Digital Libraries, TPDL 2016, held in Hannover, Germany, in September 2016. The 28 full papers, 5 posters and 8 short papers presented in this volume were carefully reviewed and selected from 93 submissions. They were organized in topical sections named: Digital Library Design; User Aspects; Search; Web Archives; Semantics; Multimedia and Time Aspects; Digital Library Evaluation; Digital Humanities; e-Infrastructures.

The Semantic Web – ISWC 2016

Author : Paul Groth
Publisher : Springer
ISBN 13 : 3319465236
Total Pages : 698 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis The Semantic Web – ISWC 2016 by : Paul Groth

Download or read book The Semantic Web – ISWC 2016 written by Paul Groth and published by Springer. This book was released on 2016-10-05 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set LNCS 9981 and 9982 constitutes the refereed proceedings of the 15th International Semantic Web Conference, ISWC 2016, which was held in Kobe, Japan, in October 2016. The 75 full papers presented in these proceedings were carefully reviewed and selected from 326 submissions. The International Semantic Web Conference is the premier forum for Semantic Web research, where cutting edge scientific results and technological innovations are presented, where problems and solutions are discussed, and where the future of this vision is being developed. It brings together specialists in fields such as artificial intelligence, databases, social networks, distributed computing, Web engineering, information systems, human-computer interaction, natural language processing, and the social sciences. The Research Track solicited novel and significant research contributions addressing theoretical, analytical, empirical, and practical aspects of the Semantic Web. The Applications Track solicited submissions exploring the benefits and challenges of applying semantic technologies in concrete, practical applications, in contexts ranging from industry to government and science. The newly introduced Resources Track sought submissions providing a concise and clear description of a resource and its (expected) usage. Traditional resources include ontologies, vocabularies, datasets, benchmarks and replication studies, services and software. Besides more established types of resources, the track solicited submissions of new types of resources such as ontology design patterns, crowdsourcing task designs, workflows, methodologies, and protocols and measures.