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.

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

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.

Querying a Web of Linked Data

Author : Olaf Hartig
Publisher :
ISBN 13 : 9783898387132
Total Pages : 248 pages
Book Rating : 4.3/5 (871 download)

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Book Synopsis Querying a Web of Linked Data by : Olaf Hartig

Download or read book Querying a Web of Linked Data written by Olaf Hartig and published by . This book was released on 2016 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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

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.

Materializing the Web of Linked Data

Author : Nikolaos Konstantinou
Publisher : Springer
ISBN 13 : 3319160745
Total Pages : 146 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Materializing the Web of Linked Data by : Nikolaos Konstantinou

Download or read book Materializing the Web of Linked Data written by Nikolaos Konstantinou and published by Springer. This book was released on 2015-04-10 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the Linked Data domain by adopting a bottom-up approach: it introduces the fundamental Semantic Web technologies and building blocks, which are then combined into methodologies and end-to-end examples for publishing datasets as Linked Data, and use cases that harness scholarly information and sensor data. It presents how Linked Data is used for web-scale data integration, information management and search. Special emphasis is given to the publication of Linked Data from relational databases as well as from real-time sensor data streams. The authors also trace the transformation from the document-based World Wide Web into a Web of Data. Materializing the Web of Linked Data is addressed to researchers and professionals studying software technologies, tools and approaches that drive the Linked Data ecosystem, and the Web in general.

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

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.

Querying a Web of Linked Data

Author :
Publisher :
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.:/5 (915 download)

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Book Synopsis Querying a Web of Linked Data by :

Download or read book Querying a Web of Linked Data written by and published by . This book was released on 2014 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Semantic Web -- ISWC 2011

Author : Lora Aroyo
Publisher : Springer Science & Business Media
ISBN 13 : 3642250726
Total Pages : 836 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis The Semantic Web -- ISWC 2011 by : Lora Aroyo

Download or read book The Semantic Web -- ISWC 2011 written by Lora Aroyo and published by Springer Science & Business Media. This book was released on 2011-10-26 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set LNCS 7031 and LNCS 7032 constitutes the proceedings of the 10th International Semantic Web Conference, ISWC 2011, held in Bonn, Germany, in October 2011. Part I, LNCS 7031, contains 50 research papers which were carefully reviewed and selected from 264 submissions. The 17 semantic Web in-use track papers contained in part II, LNCS 7032, were selected from 75 submissions. This volume also contains 15 doctoral consortium papers, selected from 31 submissions. The topics covered are: ontologies and semantics; database, IR, and AI technologies for the semantic Web; management of semantic Web data; reasoning over semantic Web data; search, query, integration, and analysis on the semantic Web; robust and scalable knowledge management and reasoning on the Web; interacting with semantic Web data; ontology modularity, mapping, merging and alignment; languages, tools, and methodologies for representing and managing semantic Web data; ontology, methodology, evaluation, reuse, extraction and evolution; evaluation of semantic Web technologies or data; specific ontologies and ontology pattern for the semantic Web; new formalisms for semantic Web; user interfaces to the semantic Web; cleaning, assurance, and provenance of semantic Web data; services, and processes; social semantic Web, evaluation of semantic Web technology; semantic Web population from the human Web.

Discovering and Querying Linked Data

Author : Arnaud Grall
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Discovering and Querying Linked Data by : Arnaud Grall

Download or read book Discovering and Querying Linked Data written by Arnaud Grall and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following Linked Data principles, data publishers published billions of RDF facts around the world since 2007. However, executing SPARQL queries on the entire Linked Data Web is still an open issue. Similarly to Web search engines such as the Google Web Search engine, Semantic Web crawlers crawl the Linked Data Web by dereferencing URI in search for RDF facts to gather. However, it is also possible to not access relevant data those are not accessible through dereferencing, such as partitions. Federated query engines rewrite regular SPARQL queries into federated SPARQL 1.1 queries based on a catalogue of sources. However, how to build and maintain an accurate catalogue at Web-scale remains an open issue. Peer-to-peer approaches suppose every participant can process SPARQL queries and to participate in flooding and/or routing tasks in peer-topeer networks. However, flooding and routing messages in such context is expensive and is poorly accepted by the community. In this thesis, we answer with four contributions: 1. how to query a decentralized Web without flooding nor routing in a peer-to-peer approach? 2. how to index endpoints automatically at the Web-scale in a federation of SPARQL endpoints?

Semantic Search over the Web

Author : Roberto De Virgilio
Publisher : Springer Science & Business Media
ISBN 13 : 3642250084
Total Pages : 418 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Semantic Search over the Web by : Roberto De Virgilio

Download or read book Semantic Search over the Web written by Roberto De Virgilio and published by Springer Science & Business Media. This book was released on 2012-08-04 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Web has become the world’s largest database, with search being the main tool that allows organizations and individuals to exploit its huge amount of information. Search on the Web has been traditionally based on textual and structural similarities, ignoring to a large degree the semantic dimension, i.e., understanding the meaning of the query and of the document content. Combining search and semantics gives birth to the idea of semantic search. Traditional search engines have already advertised some semantic dimensions. Some of them, for instance, can enhance their generated result sets with documents that are semantically related to the query terms even though they may not include these terms. Nevertheless, the exploitation of the semantic search has not yet reached its full potential. In this book, Roberto De Virgilio, Francesco Guerra and Yannis Velegrakis present an extensive overview of the work done in Semantic Search and other related areas. They explore different technologies and solutions in depth, making their collection a valuable and stimulating reading for both academic and industrial researchers. The book is divided into three parts. The first introduces the readers to the basic notions of the Web of Data. It describes the different kinds of data that exist, their topology, and their storing and indexing techniques. The second part is dedicated to Web Search. It presents different types of search, like the exploratory or the path-oriented, alongside methods for their efficient and effective implementation. Other related topics included in this part are the use of uncertainty in query answering, the exploitation of ontologies, and the use of semantics in mashup design and operation. The focus of the third part is on linked data, and more specifically, on applying ideas originating in recommender systems on linked data management, and on techniques for the efficiently querying answering on linked data.

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.

Using OpenRefine

Author : Ruben Verborgh
Publisher : Packt Publishing Ltd
ISBN 13 : 1783289090
Total Pages : 155 pages
Book Rating : 4.7/5 (832 download)

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Book Synopsis Using OpenRefine by : Ruben Verborgh

Download or read book Using OpenRefine written by Ruben Verborgh and published by Packt Publishing Ltd. This book was released on 2013-09-10 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is styled on a Cookbook, containing recipes - combined with free datasets - which will turn readers into proficient OpenRefine users in the fastest possible way.This book is targeted at anyone who works on or handles a large amount of data. No prior knowledge of OpenRefine is required, as we start from the very beginning and gradually reveal more advanced features. You don't even need your own dataset, as we provide example data to try out the book's recipes.

Data on the Web

Author : Serge Abiteboul
Publisher : Morgan Kaufmann
ISBN 13 : 9781558606227
Total Pages : 280 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Data on the Web by : Serge Abiteboul

Download or read book Data on the Web written by Serge Abiteboul and published by Morgan Kaufmann. This book was released on 2000 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data model. Queries. Types. Sysems. A syntax for data. XML.. Query languages. Query languages for XML. Interpretation and advanced features. Typing semistructured data. Query processing. The lore system. Strudel. Database products supporting XML. Bibliography. Index. About the authors.

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.