I used these slides in the context of a cultural heritage presentation so the examples are relevant to that community. For example the choice of CIDOC CRM is obvious in that community.
Introduction to linked open data, RDF: the Resource Description Framework, Tools to convert data to RDF, Tools for linking/reconciliation/resolution, Storing and maintaining the data, BBC and Linked Data
Inferring Web Citations using Social Data and SPARQL RulesMatthew Rowe
The document discusses using SPARQL rules to infer web citations from social data about individuals. It describes generating seed data by extracting profiles from social networks and linking them. Rules are built from the seed data by adding triples and creating new rules for inverse functional properties. The rules are applied to web resources to infer citations with high precision but low recall, outperforming humans for individuals with low web presence. Future work aims to overcome limitations of the seed data and enable learning from identifications.
Presentation created for the CILIP Cataloguing Interest Group event on Linked Data, 25th November 2013 (http://www.cilip.org.uk/cataloguing-and-indexing-group/events/linked-data-what-cataloguers-need-know-cig-event)
This document summarizes research into discovering lost web pages using techniques from digital preservation and information retrieval. Key points include:
- Web pages are frequently lost due to broken links or content being moved/removed, but copies may still exist in search engine caches or archives.
- Techniques like lexical signatures (representing a page's content in a few keywords) and analyzing page titles, tags and link neighborhoods can help characterize lost pages and find similar replacement content.
- Experiments showed that lexical signatures degrade over time but page titles are more stable, and combining techniques improves performance in locating replacement content. The goal is to develop a browser extension to help users find lost web pages.
This document discusses Linked Data and the best practices for publishing and interlinking data on the web. It covers four main principles:
1) Use URIs as names for things and identify real-world objects with HTTP URIs.
2) Use HTTP URIs so that people can look up those names by dereferencing the URIs.
3) Provide useful RDF information when URIs are dereferenced, using formats like RDF/XML, RDFa, N3, or Turtle.
4) Include links to other URIs to discover more related things and connect isolated data silos. This allows data to be interlinked on the Web.
This document discusses Yahoo Query Language (YQL), which allows users to query and retrieve data from various web services through a simple SQL-like syntax. YQL acts as an API for services that may not otherwise have exposed data through APIs. The document provides examples of YQL queries to retrieve data from services like Google, Twitter, Foursquare and the New York Times. It highlights how YQL simplifies accessing web data by allowing complex operations to be performed with single HTTP requests.
With over 20 billion pages, Google is the largest and most popular online search engines in the world. Tracking down local history and genealogical information, however, requires users to have a basic understanding of search techniques and how the engine filters its results. Based on David Lynch's book "Google Your Family Tree" and information provided in other online genealogy courses, this presentation features how one can make best use of the Internet’s most powerful free online service.
The document provides guidance on effectively searching for information on the internet for history projects. It explains that searching the internet is like finding a needle in a haystack but there are techniques that can help attract the right information. These include using advanced search features, Boolean logic operators, and focusing searches on specific domains like .edu to find more relevant sources. A list of recommended history and archives websites for primary sources is also included.
Inferring Web Citations using Social Data and SPARQL RulesMatthew Rowe
The document discusses using SPARQL rules to infer web citations from social data about individuals. It describes generating seed data by extracting profiles from social networks and linking them. Rules are built from the seed data by adding triples and creating new rules for inverse functional properties. The rules are applied to web resources to infer citations with high precision but low recall, outperforming humans for individuals with low web presence. Future work aims to overcome limitations of the seed data and enable learning from identifications.
Presentation created for the CILIP Cataloguing Interest Group event on Linked Data, 25th November 2013 (http://www.cilip.org.uk/cataloguing-and-indexing-group/events/linked-data-what-cataloguers-need-know-cig-event)
This document summarizes research into discovering lost web pages using techniques from digital preservation and information retrieval. Key points include:
- Web pages are frequently lost due to broken links or content being moved/removed, but copies may still exist in search engine caches or archives.
- Techniques like lexical signatures (representing a page's content in a few keywords) and analyzing page titles, tags and link neighborhoods can help characterize lost pages and find similar replacement content.
- Experiments showed that lexical signatures degrade over time but page titles are more stable, and combining techniques improves performance in locating replacement content. The goal is to develop a browser extension to help users find lost web pages.
This document discusses Linked Data and the best practices for publishing and interlinking data on the web. It covers four main principles:
1) Use URIs as names for things and identify real-world objects with HTTP URIs.
2) Use HTTP URIs so that people can look up those names by dereferencing the URIs.
3) Provide useful RDF information when URIs are dereferenced, using formats like RDF/XML, RDFa, N3, or Turtle.
4) Include links to other URIs to discover more related things and connect isolated data silos. This allows data to be interlinked on the Web.
This document discusses Yahoo Query Language (YQL), which allows users to query and retrieve data from various web services through a simple SQL-like syntax. YQL acts as an API for services that may not otherwise have exposed data through APIs. The document provides examples of YQL queries to retrieve data from services like Google, Twitter, Foursquare and the New York Times. It highlights how YQL simplifies accessing web data by allowing complex operations to be performed with single HTTP requests.
With over 20 billion pages, Google is the largest and most popular online search engines in the world. Tracking down local history and genealogical information, however, requires users to have a basic understanding of search techniques and how the engine filters its results. Based on David Lynch's book "Google Your Family Tree" and information provided in other online genealogy courses, this presentation features how one can make best use of the Internet’s most powerful free online service.
The document provides guidance on effectively searching for information on the internet for history projects. It explains that searching the internet is like finding a needle in a haystack but there are techniques that can help attract the right information. These include using advanced search features, Boolean logic operators, and focusing searches on specific domains like .edu to find more relevant sources. A list of recommended history and archives websites for primary sources is also included.
The document is a presentation on advanced search techniques for genealogy research. It discusses how search engines work, different types of searches including word, phrase, Boolean, and proximity searches. It provides examples of searching genealogy databases and sites like Mocavo. It also gives tips on refining searches and provides an example of effectively searching for "Jane Graham" born in 1811 in Monroe County, West Virginia.
"Whatever I can get..."
From the Social Network Portability WebCamp @ Cork, Ireland.
Talk by Dan Brickley on Social Network Portability, FOAF, and a claims-based approach to thinking about how various technologies fit together.
Libraries and Linked Data: Looking to the Future (2)ALATechSource
The document discusses options for new bibliographic frameworks after MARC. It describes three scenarios: 1) a relational/object-oriented RDA database, 2) linked bibliographic and authority records, and 3) flat files without links. It then discusses three approaches to implementing a new framework: 1) going native by using URIs for things, elements and values, 2) extracting data from existing MARC records, and 3) serializing data into key-value pairs, XML, or JSON. Advantages and disadvantages of each approach are outlined.
Data Journalism (City Online Journalism wk8)Paul Bradshaw
The document provides an overview of data journalism including what it is, sources for finding data, and tools for analyzing and visualizing data. It discusses scraping data from websites, using tools like Google searches, spreadsheets, and APIs to extract structured data. Ethical considerations around scraping are also mentioned. The document concludes with assigning students to group blogs and individual strategies focusing on different aspects of online journalism.
URI Disambiguation in the Context of Linked Databutest
The document discusses URI disambiguation in linked data repositories. It notes that a single entity often has multiple URIs both within and across repositories, leading to inconsistencies. It examines approaches to author disambiguation and discusses results of disambiguating authors in the DBLP dataset, finding many authors were incorrectly merged. It also notes issues of inconsistent owl:sameAs linkage in DBpedia. The document proposes solutions like consistent reference services and OKKAM to help manage coreference and improve consistency across linked data.
It's not rocket surgery - Linked In: ALA 2011Ross Singer
This document provides a brief introduction to linked library data and linked data concepts. It explains the core principles of linked data, including using URIs as names for things and including links between URIs so that additional related data can be discovered. It also discusses common vocabularies and schemas used in linked data like Dublin Core, Bibliontology, and RDA Elements. The document uses a sample book record to demonstrate how linked data can be modeled and interconnected using these vocabularies and external data sources like VIAF, LOC, and Geonames.
This document discusses the deep web and tools for searching it. It defines the deep web as dynamically generated content that is not indexed by search engines, as well as content residing in databases or behind forms. The deep web contains higher quality resources than the surface web. Tools for searching the deep web directly include Complete Planet and Infomine directories. Demonstrations show using terms like "database" to find deep web sources. Issues like accessibility of deep web databases are also covered.
The document discusses challenges facing the semantic web as it tries to keep up with the growth of the regular web, including not having enough agreed upon vocabularies, data, and links between data. It also notes problems with reasoning over large amounts of noisy and inconsistent web data from different sources. Solutions proposed include cleverly injecting semantic web technologies into content management systems to extract and link more data, as well as developing lightweight vocabularies and simplified reasoning techniques.
From: Linked Data: what cataloguers need to know. A CIG event. 25 November 2013, Birmingham. #cigld
http://www.cilip.org.uk/cataloguing-and-indexing-group/events/linked-data-what-cataloguers-need-know-cig-event
Accompanying write-up from Catalogue & Index 174: http://discovery.ucl.ac.uk/1449458/
Presentation of the paper "On Using JSON-LD to Create Evolvable RESTful Services" at the 3rd International Workshop on RESTful Design (WS-REST 2012) at WWW2012 in Lyon, France
This document provides an introduction to the deep web, including its size, evolution, and how it can be accessed. The deep web refers to content that is not indexed by standard search engines and is much larger than the surface web that search engines can index. It includes dynamically generated pages that can only be accessed through a form and private pages that require login credentials. Sites on the deep web can only be accessed using special browsers and protocols like Tor that allow for anonymous surfing through onion addresses. While some deep web sites provide legal content, others are used for illegal activities and information sharing.
RDA: Are We There Yet?
This document discusses the progress of Resource Description and Access (RDA) since its publication in 2010. It notes recommendations from libraries that tested RDA, including rewriting instructions in plain English and improving the RDA Toolkit. The implementation date for RDA is March 31, 2013. Differences after implementing RDA include lack of abbreviations, more transcription of elements, new MARC fields, and richer authority records. Fully implementing RDA may involve changes to search options and semantic web/linked data approaches. Tips are provided for libraries on deciding when to implement, talking to vendors, and planning training.
This document provides an overview of Resource Description and Access (RDA), the new cataloging standard that will replace AACR2. It discusses what RDA is, why it was developed, how it relates to FRBR, and some of the key differences between RDA and AACR2, such as changes to terminology, transcription, and MARC fields. It also explores potential future directions for RDA, such as linked data and semantic web applications. The document concludes by offering suggestions for how libraries can prepare to implement RDA.
From Feb 19 2014 NISO Virtual Conference: NISO Virtual Conference: The Semantic Web Coming of Age: Technologies and Implementations
Kevin Ford, Semantic Web Applications in Libraries: The Road to BIBFRAME
The document discusses the differences between the deep web and surface web. The deep web refers to content that is not indexed by typical search engines, as it is stored in dynamic databases rather than static web pages. It contains over 500 times more information than the surface web. Some key differences are that deep web content is accessed through direct database queries rather than URLs, and search results are generated dynamically rather than having fixed URLs. Specialized search engines are needed to access the deep web.
The document outlines plans to document, catalog, preserve, and provide access to the art collection of the late sculptor Didi Schreiner. It notes that the collection includes approximately 60 smaller sculptures and 11 large sculptures located across 3 sites that require conservation. Over 40 boxes of sketchbooks and drawings need to be assessed and preserved. The proposal calls for photographing and digitizing all works, organizing them chronographically, and storing physical materials off-site. It also recommends developing a digital archive and website to share information with museums and provide access for Mr. Schreiner. A general timeline and estimated budget are provided to carry out these objectives over 12-24 months.
This document discusses cataloging practices for different types of multimedia materials at several museums and cultural institutions. It addresses challenges in cataloging video games, audiovisual materials, and films. Different institutions use various metadata schemas and standards like RDA, AACR2, Dublin Core, Darwin Core, and PBCore to catalog their collections. Child-centered, radical, and Dewey decimal classification approaches are also summarized. Metadata practices at the Smithsonian, National Museum of American History, National Museum of Natural History, National Museum of American Art, Cooper-Hewitt Museum, and National Portrait Gallery are outlined.
Museum Archive Group Presentation Art Documentation Pratt Institute School of...PrattSILS
The document proposes a project to systematically organize and process the New York Museum of Art's net art collection and related documentation. Key aspects of the project include developing a naming convention and cataloging the collection in xDams using LIDO standards, creating individual records for net artworks and documentation, and producing a cataloging guide and controlled vocabulary. The project aims to prepare the collection for long-term preservation and improve management and access to the materials.
The document proposes establishing an organizational system for artist Calee X's documentation. It would number finished works and progress photos, use LIDO description standards and xDAMS cataloging software. Photos and documents would be hierarchically organized, with works separated from general documentation. The system is meant to be low-maintenance and user-friendly for Calee X to update. It provides options for grants to fund the initial archiving work within a six-month timeline and estimated $25,800 first-year budget. The goal is to ensure Calee X's legacy through long-term preservation of her body of work and materials.
The document is a presentation on advanced search techniques for genealogy research. It discusses how search engines work, different types of searches including word, phrase, Boolean, and proximity searches. It provides examples of searching genealogy databases and sites like Mocavo. It also gives tips on refining searches and provides an example of effectively searching for "Jane Graham" born in 1811 in Monroe County, West Virginia.
"Whatever I can get..."
From the Social Network Portability WebCamp @ Cork, Ireland.
Talk by Dan Brickley on Social Network Portability, FOAF, and a claims-based approach to thinking about how various technologies fit together.
Libraries and Linked Data: Looking to the Future (2)ALATechSource
The document discusses options for new bibliographic frameworks after MARC. It describes three scenarios: 1) a relational/object-oriented RDA database, 2) linked bibliographic and authority records, and 3) flat files without links. It then discusses three approaches to implementing a new framework: 1) going native by using URIs for things, elements and values, 2) extracting data from existing MARC records, and 3) serializing data into key-value pairs, XML, or JSON. Advantages and disadvantages of each approach are outlined.
Data Journalism (City Online Journalism wk8)Paul Bradshaw
The document provides an overview of data journalism including what it is, sources for finding data, and tools for analyzing and visualizing data. It discusses scraping data from websites, using tools like Google searches, spreadsheets, and APIs to extract structured data. Ethical considerations around scraping are also mentioned. The document concludes with assigning students to group blogs and individual strategies focusing on different aspects of online journalism.
URI Disambiguation in the Context of Linked Databutest
The document discusses URI disambiguation in linked data repositories. It notes that a single entity often has multiple URIs both within and across repositories, leading to inconsistencies. It examines approaches to author disambiguation and discusses results of disambiguating authors in the DBLP dataset, finding many authors were incorrectly merged. It also notes issues of inconsistent owl:sameAs linkage in DBpedia. The document proposes solutions like consistent reference services and OKKAM to help manage coreference and improve consistency across linked data.
It's not rocket surgery - Linked In: ALA 2011Ross Singer
This document provides a brief introduction to linked library data and linked data concepts. It explains the core principles of linked data, including using URIs as names for things and including links between URIs so that additional related data can be discovered. It also discusses common vocabularies and schemas used in linked data like Dublin Core, Bibliontology, and RDA Elements. The document uses a sample book record to demonstrate how linked data can be modeled and interconnected using these vocabularies and external data sources like VIAF, LOC, and Geonames.
This document discusses the deep web and tools for searching it. It defines the deep web as dynamically generated content that is not indexed by search engines, as well as content residing in databases or behind forms. The deep web contains higher quality resources than the surface web. Tools for searching the deep web directly include Complete Planet and Infomine directories. Demonstrations show using terms like "database" to find deep web sources. Issues like accessibility of deep web databases are also covered.
The document discusses challenges facing the semantic web as it tries to keep up with the growth of the regular web, including not having enough agreed upon vocabularies, data, and links between data. It also notes problems with reasoning over large amounts of noisy and inconsistent web data from different sources. Solutions proposed include cleverly injecting semantic web technologies into content management systems to extract and link more data, as well as developing lightweight vocabularies and simplified reasoning techniques.
From: Linked Data: what cataloguers need to know. A CIG event. 25 November 2013, Birmingham. #cigld
http://www.cilip.org.uk/cataloguing-and-indexing-group/events/linked-data-what-cataloguers-need-know-cig-event
Accompanying write-up from Catalogue & Index 174: http://discovery.ucl.ac.uk/1449458/
Presentation of the paper "On Using JSON-LD to Create Evolvable RESTful Services" at the 3rd International Workshop on RESTful Design (WS-REST 2012) at WWW2012 in Lyon, France
This document provides an introduction to the deep web, including its size, evolution, and how it can be accessed. The deep web refers to content that is not indexed by standard search engines and is much larger than the surface web that search engines can index. It includes dynamically generated pages that can only be accessed through a form and private pages that require login credentials. Sites on the deep web can only be accessed using special browsers and protocols like Tor that allow for anonymous surfing through onion addresses. While some deep web sites provide legal content, others are used for illegal activities and information sharing.
RDA: Are We There Yet?
This document discusses the progress of Resource Description and Access (RDA) since its publication in 2010. It notes recommendations from libraries that tested RDA, including rewriting instructions in plain English and improving the RDA Toolkit. The implementation date for RDA is March 31, 2013. Differences after implementing RDA include lack of abbreviations, more transcription of elements, new MARC fields, and richer authority records. Fully implementing RDA may involve changes to search options and semantic web/linked data approaches. Tips are provided for libraries on deciding when to implement, talking to vendors, and planning training.
This document provides an overview of Resource Description and Access (RDA), the new cataloging standard that will replace AACR2. It discusses what RDA is, why it was developed, how it relates to FRBR, and some of the key differences between RDA and AACR2, such as changes to terminology, transcription, and MARC fields. It also explores potential future directions for RDA, such as linked data and semantic web applications. The document concludes by offering suggestions for how libraries can prepare to implement RDA.
From Feb 19 2014 NISO Virtual Conference: NISO Virtual Conference: The Semantic Web Coming of Age: Technologies and Implementations
Kevin Ford, Semantic Web Applications in Libraries: The Road to BIBFRAME
The document discusses the differences between the deep web and surface web. The deep web refers to content that is not indexed by typical search engines, as it is stored in dynamic databases rather than static web pages. It contains over 500 times more information than the surface web. Some key differences are that deep web content is accessed through direct database queries rather than URLs, and search results are generated dynamically rather than having fixed URLs. Specialized search engines are needed to access the deep web.
The document outlines plans to document, catalog, preserve, and provide access to the art collection of the late sculptor Didi Schreiner. It notes that the collection includes approximately 60 smaller sculptures and 11 large sculptures located across 3 sites that require conservation. Over 40 boxes of sketchbooks and drawings need to be assessed and preserved. The proposal calls for photographing and digitizing all works, organizing them chronographically, and storing physical materials off-site. It also recommends developing a digital archive and website to share information with museums and provide access for Mr. Schreiner. A general timeline and estimated budget are provided to carry out these objectives over 12-24 months.
This document discusses cataloging practices for different types of multimedia materials at several museums and cultural institutions. It addresses challenges in cataloging video games, audiovisual materials, and films. Different institutions use various metadata schemas and standards like RDA, AACR2, Dublin Core, Darwin Core, and PBCore to catalog their collections. Child-centered, radical, and Dewey decimal classification approaches are also summarized. Metadata practices at the Smithsonian, National Museum of American History, National Museum of Natural History, National Museum of American Art, Cooper-Hewitt Museum, and National Portrait Gallery are outlined.
Museum Archive Group Presentation Art Documentation Pratt Institute School of...PrattSILS
The document proposes a project to systematically organize and process the New York Museum of Art's net art collection and related documentation. Key aspects of the project include developing a naming convention and cataloging the collection in xDams using LIDO standards, creating individual records for net artworks and documentation, and producing a cataloging guide and controlled vocabulary. The project aims to prepare the collection for long-term preservation and improve management and access to the materials.
The document proposes establishing an organizational system for artist Calee X's documentation. It would number finished works and progress photos, use LIDO description standards and xDAMS cataloging software. Photos and documents would be hierarchically organized, with works separated from general documentation. The system is meant to be low-maintenance and user-friendly for Calee X to update. It provides options for grants to fund the initial archiving work within a six-month timeline and estimated $25,800 first-year budget. The goal is to ensure Calee X's legacy through long-term preservation of her body of work and materials.
The document outlines the Museum of New Media's plans to implement a collection management system to catalog and provide access to their growing net art collection. They will use the open source software xDams and the metadata standard LIDO to catalog over 50 net artworks and related materials. The project will establish numbering schemes, file naming conventions, and internal vocabularies. It details staff roles and a six month timeline to have the collection cataloged in xDams before a planned net art retrospective exhibition.
Artist Archive Group Presentation Art Documentation Pratt Institute School of...PrattSILS
This document outlines a plan to organize an artist's materials. It involves inventorying and digitizing photographic materials over three stages in the next 8-10 months. A full-time studio manager and interns will catalog items using xDams and create digital files and records while consultants ensure professional standards are followed. Materials like document boxes, acid-free folders, a scanner and hard drive are needed. Following established museum cataloging standards and practices will help ensure the long-term preservation and accessibility of the materials.
Karma, a Data Integration Tool
Pedro Szekely, Project Leader/Research Associate Professor, Information Sciences Institute, University of Southern California
The document provides an overview of how the LOCAH project is applying Linked Data concepts to expose archival and bibliographic data from the Archives Hub and Copac as Linked Open Data. It describes the process of (1) modeling the data as RDF triples, (2) transforming existing XML data to RDF, (3) enhancing the data by linking to external vocabularies and datasets, (4) loading the RDF into a triplestore, and (5) creating Linked Data views to expose the data on the web. The goal is to publish structured data that can be interconnected across domains to enable new uses by both humans and machines.
Presentation at ELAG 2011, European Library Automation Group Conference, Prague, Czech Republic. 25th May 2011
http://elag2011.techlib.cz/en/815-lifting-the-lid-on-linked-data/
This presentation provides an accessible introduction to Linked Open Data (LOD) and how LOD is modelled and made available online. The presenters will discuss several LOD projects created by libraries and archives in order to illustrate the benefits of applying LOD principles and practices. They will also demonstrate easy ways to leverage the power of LOD for archival organizations and their digital collections, with concrete examples involving WikiData, Omeka S, and the SNAC (Social Networks and Archival Context) Project.
Society of Georgia Archivists 2018 Annual Meeting
Speakers:
Josh Hogan, Atlanta University Center Robert W. Woodruff Library
Cliff Landis, Atlanta University Center Robert W. Woodruff Library
This is an informal overview of Linked Data and the usage made of it for the project http://res.space (presented on August 11th 2016 during a team meeting)
This document summarizes a presentation about using linked data to improve library discovery. It discusses linking library data to non-library data sources to provide a richer context about materials. It introduces key concepts of linked data like identifying entities, using URIs, and standard vocabularies. The presentation also provides examples of how linked data is being applied in library catalogs by connecting catalog records to sources like VIAF, DBpedia, and Wikidata.
The document introduces the concept of Linked Data and discusses how it can be used to publish structured data on the web by connecting data from different sources. It explains the principles of Linked Data, including using HTTP URIs to identify things, providing useful information when URIs are dereferenced, and including links to other URIs to enable discovery of related data. Examples of existing Linked Data datasets and applications that consume Linked Data are also presented.
IFLA LIDASIG Open Session 2017: Introduction to Linked DataLars G. Svensson
At the IFLA Linked Data Special Interest Group open session in Wroclaw we briefly introduced the mission of the SIG and then went on to a brief introduction to what linked data is and why that topic is important to libraries.
The presentation was held jointly by Astrid Verheusen (general introduction to the SIG) and Lars G. Svensson (introduction to Linked Data)
TPDL2013 tutorial linked data for digital libraries 2013-10-22jodischneider
Tutorial on Linked Data for Digital Libraries, given by me, Uldis Bojars, and Nuno Lopes in Valletta, Malta at TPDL2013 on 2013-10-22.
http://tpdl2013.upatras.gr/tut-lddl.php
This half-day tutorial is aimed at academics and practitioners interested in creating and using Library Linked Data. Linked Data has been embraced as the way to bring complex information onto the Web, enabling discoverability while maintaining the richness of the original data. This tutorial will offer participants an overview of how digital libraries are already using Linked Data, followed by a more detailed exploration of how to publish, discover and consume Linked Data. The practical part of the tutorial will include hands-on exercises in working with Linked Data and will be based on two main case studies: (1) linked authority data and VIAF; (2) place name information as Linked Data.
For practitioners, this tutorial provides a greater understanding of what Linked Data is, and how to prepare digital library materials for conversion to Linked Data. For researchers, this tutorial updates the state of the art in digital libraries, while remaining accessible to those learning Linked
Data principles for the first time. For library and iSchool instructors, the tutorial provides a valuable introduction to an area of growing interest for information organization curricula. For digital library project managers, this tutorial provides a deeper understanding of the principles of Linked Data, which is needed for bespoke projects that involve data mapping and the reuse of existing metadata models.
The document discusses a webinar presented by NISO and DCMI on Schema.org and Linked Data. The webinar provides an overview of Schema.org and Linked Data, examines the advantages and challenges of using RDF and Linked Data, looks at Schema.org in more detail, and discusses how Schema.org and Linked Data can be combined. The goals of the webinar are to illustrate the different design choices for identifying entities and describing structured data, integrating vocabularies, and incentives for publishing accurate data, as well as to help guide adoption of Schema.org and Linked Data approaches.
SPARQL1.1 Tutorial, given in UChile by Axel Polleres (DERI)net2-project
This document provides an introduction to SPARQL 1.1. It begins by explaining that SPARQL is a query language for the semantic web that allows users to query RDF data stores similarly to how SQL queries relational databases. It then describes SPARQL 1.0, the initial standard version, and the new features being added in SPARQL 1.1, including aggregate functions, subqueries, property paths and federated querying. The document concludes by discussing SPARQL implementations and the status of the 1.1 specification.
Transmission6 - Publishing Linked DataBill Roberts
This document provides guidance on publishing linked data by describing how to (1) use URIs to identify things, (2) make those URIs accessible via HTTP, (3) provide useful information about those URIs using standards, and (4) include links between URIs. It recommends starting by describing important things and assigning them URIs, and then representing the descriptions in both human-readable and machine-readable formats like RDF. Publishers should also include links between related URIs and provide licensing information.
Presentation given at Barcamp Chiang Mai 4 on the basics of Semantic Web. A simple introduction with examples, aimed for those with a little Web development experience.
Raises questions about the true identity of Tim Berners-Lee.
Overview of how data on the Web of Data can be consumed (first and foremost Linked Data) and implications for the development of usage mining approaches.
References:
Elbedweihy, K., Mazumdar, S., Cano, A. E., Wrigley, S. N., & Ciravegna, F. (2011). Identifying Information Needs by Modelling Collective Query Patterns. COLD, 782.
Elbedweihy, K., Wrigley, S. N., & Ciravegna, F. (2012). Improving Semantic Search Using Query Log Analysis. Interacting with Linked Data (ILD 2012), 61.
Raghuveer, A. (2012). Characterizing machine agent behavior through SPARQL query mining. In Proceedings of the International Workshop on Usage Analysis and the Web of Data, Lyon, France.
Arias, M., Fernández, J. D., Martínez-Prieto, M. A., & de la Fuente, P. (2011). An empirical study of real-world SPARQL queries. arXiv preprint arXiv:1103.5043.
Hartig, O., Bizer, C., & Freytag, J. C. (2009). Executing SPARQL queries over the web of linked data (pp. 293-309). Springer Berlin Heidelberg.
Verborgh, R., Hartig, O., De Meester, B., Haesendonck, G., De Vocht, L., Vander Sande, M., ... & Van de Walle, R. (2014). Querying datasets on the web with high availability. In The Semantic Web–ISWC 2014 (pp. 180-196). Springer International Publishing.
Verborgh, R., Vander Sande, M., Colpaert, P., Coppens, S., Mannens, E., & Van de Walle, R. (2014, April). Web-Scale Querying through Linked Data Fragments. In LDOW.
Luczak-Rösch, M., & Bischoff, M. (2011). Statistical analysis of web of data usage. In Joint Workshop on Knowledge Evolution and Ontology Dynamics (EvoDyn2011), CEUR WS.
Luczak-Rösch, M. (2014). Usage-dependent maintenance of structured Web data sets (Doctoral dissertation, Freie Universität Berlin, Germany), http://edocs.fu-berlin.de/diss/receive/FUDISS_thesis_000000096138.
Publishing and Using Linked Open Data - Day 1 Richard Urban
This document provides an agenda and schedule for Monday's Linked Open Data class. The day includes introductions, sessions on introducing linked data and exploring use cases, breaks for discussion, and a concluding session on kicking off participant projects. Evening events include an outside lecture and networking social for graduate students.
Lecture at the advanced course on Data Science of the SIKS research school, May 20, 2016, Vught, The Netherlands.
Contents
-Why do we create Linked Open Data? Example questions from the Humanities and Social Sciences
-Introduction into Linked Open Data
-Lessons learned about the creation of Linked Open Data (link discovery, knowledge representation, evaluation).
-Accessing Linked Open Data
A Graph-based Approach to Learn Semantic Descriptions of Data SourcesPedro Szekely
The document presents a graph-based approach to learn semantic descriptions of data sources. It describes how known source models are used to construct a graph and generate candidate semantic models for a new source, by mapping learned semantic types and computing minimal trees. Multiple candidate models may be generated from different mappings to the graph. The candidates are then ranked to identify the best semantic description for the new source.
Connecting the Smithsonian American Art Museum to the Linked Data CloudPedro Szekely
Slides for our "Connecting the Smithsonian American Art Museum to the Linked Data Cloud." paper presented at the 10th Extended Semantic Web Conference (ESWC), in Montpellier, May 2013. http://eswc-conferences.org/sites/default/files/papers2013/szekely.pdf
This document discusses SPARQL, a query language for retrieving and manipulating data stored in RDF format. It provides examples of basic SPARQL queries using SELECT, ASK, CONSTRUCT and DESCRIBE. The examples demonstrate querying and filtering data, handling blank nodes, optional and negation patterns, and property paths. The document is a presentation on SPARQL given by Pedro Szekely and includes syntax examples to retrieve data from RDF graphs using SPARQL queries.
This document contains slides from a presentation by Pedro Szekely on RDF and related Semantic Web topics. The slides cover Unicode, URLs, URIs, namespaces, XML, XML Schema, RDF graphs, RDF syntaxes including XML and Turtle formats, and comparisons between XML and RDF. Key topics include using URIs to identify resources on the web, representing information as subject-predicate-object triples in RDF graphs, combining vocabularies using namespaces, and leveraging XML tools while making RDF more human-readable.
Karma: Tools for Publishing Cultural Heritage Data in the Linked Open Data CloudPedro Szekely
Tools to convert data from databases to Linked Data. This presentation shows how Karma (iso.edu/integration/karma) is used to publish data from cultural heritage databases to the Linked Data cloud. Karma supports conversion of data to RDF according to user-selected ontologies and linking to other datasets such as dbpedia.org.
The document discusses publishing cultural heritage data as Linked Open Data to make it more accessible and useful online. It describes how currently, cultural heritage information on websites is readable by humans but not understandable by computers. The authors propose publishing this data as Linked Open Data using Resource Description Framework (RDF) standards so it can be interconnected across different providers and used to build innovative applications. They outline some potential applications like an enhanced website about artist John Singer Sargent that links to related articles and artworks, as well as a virtual museum connecting different cultural institutions. The overall goals are to contribute data, leverage existing data, and lead the way in this area through their work with the Smithsonian American Art Museum.
GraphSummit Paris - The art of the possible with Graph TechnologyNeo4j
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Looking for a reliable mobile app development company in Noida? Look no further than Drona Infotech. We specialize in creating customized apps for your business needs.
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SOCRadar's Aviation Industry Q1 Incident Report is out now!
The aviation industry has always been a prime target for cybercriminals due to its critical infrastructure and high stakes. In the first quarter of 2024, the sector faced an alarming surge in cybersecurity threats, revealing its vulnerabilities and the relentless sophistication of cyber attackers.
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AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppGoogle
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See My Other Reviews Article:
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(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
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Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
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Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
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Top Features to Include in Your Winzo Clone App for Business Growth (4).pptxrickgrimesss22
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The system's ability to streamline workflows and automate ticket routing significantly reduces the time taken to process each ticket, making the process faster and more efficient. Mobile access allows field technicians to update ticket information on the go, ensuring that the latest information is always available and accelerating the locate process. Overall, Utilocate not only enhances the efficiency and accuracy of locate ticket management but also improves safety by minimizing the risk of utility damage through precise and timely locates.
What is Augmented Reality Image Trackingpavan998932
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OpenMetadata Community Meeting - 5th June 2024OpenMetadata
The OpenMetadata Community Meeting was held on June 5th, 2024. In this meeting, we discussed about the data quality capabilities that are integrated with the Incident Manager, providing a complete solution to handle your data observability needs. Watch the end-to-end demo of the data quality features.
* How to run your own data quality framework
* What is the performance impact of running data quality frameworks
* How to run the test cases in your own ETL pipelines
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Watch the meeting recording here - https://www.youtube.com/watch?v=UbNOje0kf6E
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When deliberating between CodeIgniter vs CakePHP for web development, consider their respective strengths and your project requirements. CodeIgniter, known for its simplicity and speed, offers a lightweight framework ideal for rapid development of small to medium-sized projects. It's praised for its straightforward configuration and extensive documentation, making it beginner-friendly. Conversely, CakePHP provides a more structured approach with built-in features like scaffolding, authentication, and ORM. It suits larger projects requiring robust security and scalability. Ultimately, the choice hinges on your project's scale, complexity, and your team's familiarity with the frameworks.
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Crescat is industry-trusted event management software, built by event professionals for event professionals. Founded in 2017, we have three key products tailored for the live event industry.
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Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
Linked Data and Tools
1. Linked Data and Tools
Pedro Szekely
USC/Information Sciences Institute
pszekely@isi.edu, http://isi.edu/~szekely
September 2014
CC-By 2.0
2. Outline
• Introduction to linked open data
• RDF: the Resource Description Framework
• Tools to convert data to RDF
• Tools for linking/reconciliation/resolution
• Storing and maintaining the data
• Applications
Pedro Szekely CC-By 2.0 2
7. Problem
web pages are machine processable,
but not machine understandable
impractical for building applications using the data
Pedro Szekely CC-By 2.0 7
9. What Is Linked Data?
A method of publishing structured data
so that it can be interlinked
and become more useful
Builds upon standard Web technologies
such as HTTP and URIs
to share information
in a way that can be read automatically by computers
from Wikipedia
Pedro Szekely CC-By 2.0 9
10. “Linked” Open Data
Crystal Bridges
Museum of
American Art
Dallas Museum
of Art
Indianapolis
Museum
of Art
National Portrait
Gallery
The Metropolitan
Museum of Art
Smithsonian American
Art Museum
Pedro Szekely CC-By 2.0 10
11. “Linked” Open Data
Crystal Bridges
Museum of
American Art
Dallas Museum
of Art
… data is public!
… in a common format!
… but we only have islands of data!
Indianapolis
Museum
of Art
National Portrait
Gallery
The Metropolitan
Museum of Art
Smithsonian American
Art Museum
✔
✖
Pedro Szekely CC-By 2.0 11
13. Linked Data Principles
• Use URIs as names for things
• Use HTTP URIs so that people
can look up those names
• When someone looks up a URI,
provide useful information,
using the standards (RDF,
SPARQL)
• Include links to other URIs so
that they can discover more
things http://youtu.be/OM6XIICm_qo!
http://www.w3.org/DesignIssues/LinkedData.html !
Pedro Szekely CC-By 2.0 13
14. Pedro Szekely
Principle 1
Use URIs as names for things
Principle 2
Use HTTP URIs so that people can look up those names
CC-By 2.0 14
24. Pedro Szekely
http://szekelys.com/diego
Principle 3
When someone looks up a URI, provide
useful information, using the standards
(RDF*, SPARQL) CC-By 2.0 24
25. Pedro Szekely
Principle 4
Include links to other URIs so that they
can discover more things
CC-By 2.0 25
32. Resource Description Framework
Intended for representing metadata about Web resources,
such as the title, author, and modification date
of a Web document
… also be used to represent information about
things that can be identified on the Web,
even when they cannot be directly retrieved on the Web
Pedro Szekely CC-By 2.0 32
33. Represent Resources Using URIs
That guy has first name “Pedro”
h&p://szekelys.com/family#pedro
“Pedro”
h&p://xmlns.com/foaf/0.1/firstName
Pedro Szekely CC-By 2.0 33
34. Represent Information as Triples
h&p://szekelys.com/family#pedro
h&p://xmlns.com/foaf/0.1/firstName
Subject!
Predicate!
“Pedro”
The resource being described
A property of the resource
Object! The value of the property
Pedro Szekely CC-By 2.0 34
37. RDF Graphs
Real world objects! Kinds of things!
h&p://szekelys.com/family#pedro
“Pedro”
foaf:firstName
foaf:Person
rdf:type
foaf:homepage
h&p://isi.edu/~szekely
Literals!
Properties of things!
Pedro Szekely CC-By 2.0 37
41. Steps to Create Linked Open Data
• Select ontologies
… that define classes and properties for our data
• Convert data to RDF
… from the museum database to the ontologies
• Identify links to other Linked Data datasets
… to other museums and Link Data hubs
Pedro Szekely CC-By 2.0 41
42. • Select ontologies
… that define classes and properties for our data
CIDOC CRM
http://www.cidoc-crm.org/
Pedro Szekely CC-By 2.0 42
43. • Select ontologies
… that define classes and properties for our data
• Convert data to RDF
… from the museum database to the ontologies
Pedro SzPeekderlyo Szekely CC-By 2.0 43
44. RDF Mapping Tools
Tool Shortcomings Benefits
custom
labor intensive, error
flexible
code
prone
R2RML difficult to learn, only
for SQL databases
W3C standard, good documentation,
multiple vendors
RDF
Refine
only for tabular data graphical user interface, support for
reconciliation, open source
Karma semi-automatic, graphical user
interface, supports tabular data, XML
and JSON, multiple export formats,
R2RML compatible, open source
Pedro Szekely CC-By 2.0 44
53. Linking/Reconciliation Tools
Tool Shortcomings Benefits
custom
code
very difficult tuned to the data
SILK
LIMES
experimental, poor
support
work with RDF, efficient, relatively
easy to use
RDF
Refine
requires implementing
a new reconciliation
service
integrated with RDF conversion, user
interface for curation
Karma under development
Pedro Szekely CC-By 2.0 53
57. Storage Options
Technology Shortcomings Benefits
SPARQL
low reliability, esoteric,
endpoint
slow
sophisticated query language
RDF dump no query capability,
esoteric
flexibility: clients can
download and use in
applications, easy to publish
JSON-LD +
ElasticSearch
restricted query language very high performance,
mainstream technology, easy
to publish
Pedro Szekely CC-By 2.0 57
61. we have expanded the reach of linked data within the BBC to more
audience facing products and presented our ambitions to using linked
data as glue for the plethora of content the BBC produces!
!
http://www.bbc.co.uk/blogs/internet/posts/Linked-Data-new-ontologies-website!
http://www.bbc.co.uk/blogs/internet/posts/Linked-Data-Connecting-together-the-BBCs-Online-Content!
Pedro Szekely CC-By 2.0 61
http://www.bbc.co.uk/blogs/internet/posts/Opening-up-the-BBCs-Linked-Data!