The document discusses handling broken links in the Web of Data. It introduces DSNotify, a framework for detecting and correcting broken links. DSNotify uses a notification strategy where data sources notify clients of changes that could cause links to break. It also detects moves between resources based on their similarities. The core algorithm detects events like deletions, updates, moves and creations by comparing resource representations over time. DSNotify was evaluated on changes observed between snapshots of DBpedia.
The document summarizes the results of a pilot survey on open data and crowdsourcing among Swiss GLAM institutions. Key findings include:
- Around 60% of responding institutions make metadata and digital copies available online, but 40% do not. Exchange of metadata occurs for 61% of respondents.
- Over 50% see a need to improve metadata quality and interoperability.
- Only 7-1% make digital objects freely available online. Most allow access with restrictions.
- Crowdsourcing is seen as more risky than beneficial by over 90% of respondents.
Evolution Towards Web 3.0: The Semantic WebLeeFeigenbaum
This was a lecture I presented at Professor Stuart Madnick's class, "Evolution Towards Web 3.0" at the MIT Sloan School of Management on April 21, 2011. Please follow along with the speaker notes which add significant commentary to the slides.
Callimachus is a framework for rapidly developing semantic web applications using linked data principles. It allows web developers to create data-driven applications using templates in hours. Callimachus uses a wiki interface to collaboratively edit and manage structured linked data, providing features like access control, change tracking, and visualization of data in charts and maps. The tool aims to address limitations of traditional content management systems and wikis in handling linked data for real-world use cases.
Update on the progress of two Linked Data projects, including one from US EPA and another from a Virginia based regional healthcare company using anonymized EMR and Linked Data for personalized healthcare.
The document discusses strategies for modeling and publishing open government data as linked data. It outlines a process that includes identifying data, modeling exemplar records, naming resources with URIs, describing resources with vocabularies, converting data to RDF, and publishing and maintaining the data. The key steps are to focus on modeling real-world objects without consideration for specific applications, take an iterative approach, and be forgiving of imperfect initial models. Content management systems and wiki systems are not optimal for structured linked data, so a linked data management system like Callimachus is recommended.
The document discusses the Social Semantic Web and related technologies. It provides an overview of the growth of social networks and user-generated content online. It then discusses how semantic technologies can help connect isolated social communities and their data by adding machine-readable metadata. Key topics covered include the Semantic Web stack, linked data, ontologies for modeling social data like FOAF and SIOC, and applications like distributed identity and social recommendations.
Linked Data Approach for Integration of Human Health & Environmental Data3 Round Stones
Best practices and platforms for access and reuse of scientific data and models. We explore a Linked Data approach for data integration, modeling and interoperability.
Delivered by Bernadette Hyland at EPA & Society of Toxicology Scientific Workshop titled: "Building for Better Decisions: Multi-scale Integration of Human Health and Environmental Data..
Delivered 8-May-2012 at EPA Research Triangle Park, NC USA.
The document provides an overview of social semantics and the social semantic web. It discusses how social data on platforms like Facebook and Twitter can be represented semantically using ontologies and vocabularies. This includes representing people with FOAF, relationships with Schema.org, content with SIOC, and behavior with OUBO. Representing social data semantically allows it to be queried, linked across platforms, and analyzed with semantic web technologies. The social semantic web aims to overcome the siloed nature of social data and enable portability of social information.
The document summarizes the results of a pilot survey on open data and crowdsourcing among Swiss GLAM institutions. Key findings include:
- Around 60% of responding institutions make metadata and digital copies available online, but 40% do not. Exchange of metadata occurs for 61% of respondents.
- Over 50% see a need to improve metadata quality and interoperability.
- Only 7-1% make digital objects freely available online. Most allow access with restrictions.
- Crowdsourcing is seen as more risky than beneficial by over 90% of respondents.
Evolution Towards Web 3.0: The Semantic WebLeeFeigenbaum
This was a lecture I presented at Professor Stuart Madnick's class, "Evolution Towards Web 3.0" at the MIT Sloan School of Management on April 21, 2011. Please follow along with the speaker notes which add significant commentary to the slides.
Callimachus is a framework for rapidly developing semantic web applications using linked data principles. It allows web developers to create data-driven applications using templates in hours. Callimachus uses a wiki interface to collaboratively edit and manage structured linked data, providing features like access control, change tracking, and visualization of data in charts and maps. The tool aims to address limitations of traditional content management systems and wikis in handling linked data for real-world use cases.
Update on the progress of two Linked Data projects, including one from US EPA and another from a Virginia based regional healthcare company using anonymized EMR and Linked Data for personalized healthcare.
The document discusses strategies for modeling and publishing open government data as linked data. It outlines a process that includes identifying data, modeling exemplar records, naming resources with URIs, describing resources with vocabularies, converting data to RDF, and publishing and maintaining the data. The key steps are to focus on modeling real-world objects without consideration for specific applications, take an iterative approach, and be forgiving of imperfect initial models. Content management systems and wiki systems are not optimal for structured linked data, so a linked data management system like Callimachus is recommended.
The document discusses the Social Semantic Web and related technologies. It provides an overview of the growth of social networks and user-generated content online. It then discusses how semantic technologies can help connect isolated social communities and their data by adding machine-readable metadata. Key topics covered include the Semantic Web stack, linked data, ontologies for modeling social data like FOAF and SIOC, and applications like distributed identity and social recommendations.
Linked Data Approach for Integration of Human Health & Environmental Data3 Round Stones
Best practices and platforms for access and reuse of scientific data and models. We explore a Linked Data approach for data integration, modeling and interoperability.
Delivered by Bernadette Hyland at EPA & Society of Toxicology Scientific Workshop titled: "Building for Better Decisions: Multi-scale Integration of Human Health and Environmental Data..
Delivered 8-May-2012 at EPA Research Triangle Park, NC USA.
The document provides an overview of social semantics and the social semantic web. It discusses how social data on platforms like Facebook and Twitter can be represented semantically using ontologies and vocabularies. This includes representing people with FOAF, relationships with Schema.org, content with SIOC, and behavior with OUBO. Representing social data semantically allows it to be queried, linked across platforms, and analyzed with semantic web technologies. The social semantic web aims to overcome the siloed nature of social data and enable portability of social information.
The document summarizes an update from the W3C Government Linked Data Working Group. It discusses that the working group, which was started in June 2011, is chartered to provide standards and develop standards track documents to help governments share data as high quality linked data. The working group has 39 participants from 25 organizations in an effort to transform how governments serve their citizens in the 21st century.
Open Data is defined as data that anyone is free to use, reuse, and redistribute subject only to attribution. The document discusses definitions of open data and why transparency and open government initiatives promote opening up public sector data. It provides guidance on how to publish open data by making it available online in open, structured formats and linking it to other open data. Open licenses like Creative Commons are recommended to ensure open data can be freely used and shared. Examples of public agencies that have adopted open data policies are provided.
Data.dcs: Converting Legacy Data into Linked DataMatthew Rowe
This document discusses converting legacy data from the Department of Computer Science (DCS) at the University of Sheffield into linked data. It describes extracting data from websites and publications databases, converting it to RDF triples, resolving duplicate entities, and linking the data to external datasets like DBLP. The goal is to make DCS data about people, publications, and research groups machine-readable and queryable while integrating it into the larger web of linked open data.
The document summarizes research in semantic search and its applications. It discusses the evolution of semantic search from early work on the semantic web to current applications using knowledge graphs. It outlines key challenges in semantic search like query understanding and how mobile search is driving new areas like conversational agents and task completion. The use of semantic representations and knowledge bases is helping to improve search quality and enable new interactive applications.
This document discusses opportunities and challenges of Linked Data. It begins with an overview of Linked Data principles like using URIs to identify things and linking related things. It then discusses enabling technologies like HTTP URIs and SPARQL queries. Opportunities mentioned include using the LOD cloud as a test bed and benefiting from linked context in applications. Challenges include large-scale processing of Linked Data and quality of links. The document concludes by emphasizing the potential of Linked Data to make data more valuable.
The document summarizes a presentation on Named Data Networking (NDN) given by Mostafa Rezazad. It discusses the motivation for NDN, which is to make data and services rather than locations the primary objects on the network. This allows for benefits like redundancy elimination, easier mobility, and more inherent security. An overview is provided of NDN's packet types, node structure, name structure, and routing approach.
Interlinking Online Communities and Enriching Social Software with the Semant...John Breslin
This document summarizes a presentation about interlinking online communities using Semantic Web technologies. It discusses:
1. The SIOC (Semantically-Interlinked Online Communities) project which aims to semantically connect online discussion sites through a common data model.
2. How SIOC represents the structure and content of communities using RDF properties and classes. Communities can then exchange and query data using common semantics.
3. Tools that export community data into RDF using SIOC, including for WordPress, vBulletin, and phpBB. This allows interlinking users, content, and activities across sites.
Methods for Intrinsic Evaluation of Links in the Web of DataCristina Sarasua
The current Web of Data contains a large amount of interlinked data. However, there is still a limited understanding about the quality of the links connecting entities of different and distributed data sets. Our goal is to provide a collection of indicators that help assess existing interlinking. In this paper, we present a framework for the intrinsic evaluation of RDF links, based on core principles of Web data integration and foundations of Information Retrieval. We measure the extent to which links facilitate the discovery of an extended description of entities, and the discovery of other entities in other data sets. We also measure the use of different vocabularies. We analysed links extracted from a set of data sets from the Linked Data Crawl 2014 using these measures.
The document discusses using open data and linked data on the web. It begins by defining open government data and its benefits like transparency and participation. It then explains how the semantic web uses linked data to connect related data across the web. Examples are given of government and other datasets that are available as linked open data. The presentation concludes by proposing future interdisciplinary collaboration to further develop applications using open and linked data.
An overview of the Network Overview Discovery and Exploration add-in for Excel 2007 (NodeXL), a social network analysis add-in for the familiar spreadsheet application. Visualize twitter, flickr, facebook, and email networks with just a few mouse clicks.
Making the Web Searchable - Keynote ICWE 2015Peter Mika
This document discusses making the web more searchable through semantic technologies. It begins with an overview of how web search currently works and its limitations, and then discusses how the semantic web aims to address these issues by adding explicit meaning and relationships between data on the web. It describes early skepticism of the semantic web from the information retrieval community and how it has become more practical over time. It also outlines research into semantic search done at Yahoo, including developing a knowledge graph and using semantic information to enhance search results. Finally, it discusses how semantic technologies are now being adopted more widely through efforts like schema.org.
Open Government Data, Linked Data, and the Missing Blocks in Korea Haklae Kim
This presentation discusses open government data and linked data. It provides examples of how open data initiatives from different governments have increased transparency and civic participation. Linked data practices are presented as a way to interconnect disparate datasets using semantic web standards. While Korea has strong e-government infrastructure, the presentation argues more can be done to implement open data and linked data practices. Participatory approaches are advocated to help design open data policies and solutions.
Social Semantic Web (Social Activity and Facebook)Myungjin Lee
The document discusses the concept of a Social Semantic Web (SSW). It describes how social networks like Facebook have begun to incorporate semantic data through initiatives like Open Graph that allow objects and actions to be defined and shared. This lays the foundation to map social graph data to semantic vocabularies and ontologies, thereby linking decentralized social data on the web. The integration of social interactions with semantic representations enables new, semantically-aware applications and services to leverage collective human contributions on the social web.
RDAP 15: You’re in good company: Unifying campus research data servicesASIS&T
Research Data Access and Preservation Summit, 2015
Minneapolis, MN
April 22-23
Cynthia Hudson-Vitale, Digital Data Outreach Librarian, Washington University
Brianna Marshall, Digital Curation Coordinator, University of Wisconsin-Madison
Amy Nurnberger, Research Data Manager, Columbia University
Freddy Limpens: From folksonomies to ontologies: a socio-technical solution.PhiloWeb
The document discusses approaches for semantically enriching folksonomies by structuring user-generated tags. It proposes a life-cycle approach involving initial automatic processing of tags to identify relationships, followed by user-centric structuring, conflict detection, and global structuring by a referent user. The goal is to turn flat folksonomies into structured folksonomies integrated with Semantic Web models while capturing diverse user perspectives.
La Comisión Federal de Telecomunicaciones advirtió a Telmex que no puede prestar el servicio de televisión de manera indirecta a través de una alianza con MVS Multivisión y EchoStar-Dish sin la autorización de la Cofetel o la Secretaría de Comunicaciones y Transportes. La Cofetel señaló que Telmex pretende prestar el servicio de televisión de manera indirecta a los usuarios finales, lo que viola su concesión. La concesión de Telmex prohíbe expresamente prestar servicios de televis
Análisis crítico literario del poema de David Auris VillegasMiguel Ramos
Este documento presenta un análisis crítico del poema "Voces del silencio" del poeta peruano David Auris Villegas. El análisis incluye una introducción al poema y al autor, un examen de la estructura y componentes del poema, y una conclusión. El análisis describe la invasión y explotación de África por parte de los conquistadores estadounidenses y denuncia los abusos y atropellos cometidos contra la población africana según lo representado en el poema.
Austral Consulting es una consultoría jurídico-financiera fundada en 1998 que ofrece servicios integrales a pymes y grandes empresas en 6 áreas: económica, jurídica, consultoría, auditoría, emprendimiento e internacionalización. Actualmente busca consolidarse en el mercado y sentar las bases para su expansión. Cuenta con un equipo de profesionales altamente calificados.
O Dr. Hugo Arcaro Neto, atuante nas áreas de Direito Tributário, Penal, Empresarial e Ambiental, em artigo, analisa o parcelamento tributário através de importantes apontamentos
cropped_Page 1 - Kochi - Malayalai Rich List June 4 2015Shenoy Karun
The document is a newspaper article that discusses the top 10 richest Malayalis (people of Kerala origin) based on their net worth. It provides brief profiles of each billionaire, including their core businesses and headquarters locations. Many made their fortunes in the Middle East in construction, retail, education and other industries. The top three are Ravi Pillai (net worth $2.8 billion), M.A. Yusuffali ($2.5 billion), and PNC Menon ($2 billion). The article notes the diversity of backgrounds and that most are self-made, coming from small trader families in Kerala.
The document summarizes an update from the W3C Government Linked Data Working Group. It discusses that the working group, which was started in June 2011, is chartered to provide standards and develop standards track documents to help governments share data as high quality linked data. The working group has 39 participants from 25 organizations in an effort to transform how governments serve their citizens in the 21st century.
Open Data is defined as data that anyone is free to use, reuse, and redistribute subject only to attribution. The document discusses definitions of open data and why transparency and open government initiatives promote opening up public sector data. It provides guidance on how to publish open data by making it available online in open, structured formats and linking it to other open data. Open licenses like Creative Commons are recommended to ensure open data can be freely used and shared. Examples of public agencies that have adopted open data policies are provided.
Data.dcs: Converting Legacy Data into Linked DataMatthew Rowe
This document discusses converting legacy data from the Department of Computer Science (DCS) at the University of Sheffield into linked data. It describes extracting data from websites and publications databases, converting it to RDF triples, resolving duplicate entities, and linking the data to external datasets like DBLP. The goal is to make DCS data about people, publications, and research groups machine-readable and queryable while integrating it into the larger web of linked open data.
The document summarizes research in semantic search and its applications. It discusses the evolution of semantic search from early work on the semantic web to current applications using knowledge graphs. It outlines key challenges in semantic search like query understanding and how mobile search is driving new areas like conversational agents and task completion. The use of semantic representations and knowledge bases is helping to improve search quality and enable new interactive applications.
This document discusses opportunities and challenges of Linked Data. It begins with an overview of Linked Data principles like using URIs to identify things and linking related things. It then discusses enabling technologies like HTTP URIs and SPARQL queries. Opportunities mentioned include using the LOD cloud as a test bed and benefiting from linked context in applications. Challenges include large-scale processing of Linked Data and quality of links. The document concludes by emphasizing the potential of Linked Data to make data more valuable.
The document summarizes a presentation on Named Data Networking (NDN) given by Mostafa Rezazad. It discusses the motivation for NDN, which is to make data and services rather than locations the primary objects on the network. This allows for benefits like redundancy elimination, easier mobility, and more inherent security. An overview is provided of NDN's packet types, node structure, name structure, and routing approach.
Interlinking Online Communities and Enriching Social Software with the Semant...John Breslin
This document summarizes a presentation about interlinking online communities using Semantic Web technologies. It discusses:
1. The SIOC (Semantically-Interlinked Online Communities) project which aims to semantically connect online discussion sites through a common data model.
2. How SIOC represents the structure and content of communities using RDF properties and classes. Communities can then exchange and query data using common semantics.
3. Tools that export community data into RDF using SIOC, including for WordPress, vBulletin, and phpBB. This allows interlinking users, content, and activities across sites.
Methods for Intrinsic Evaluation of Links in the Web of DataCristina Sarasua
The current Web of Data contains a large amount of interlinked data. However, there is still a limited understanding about the quality of the links connecting entities of different and distributed data sets. Our goal is to provide a collection of indicators that help assess existing interlinking. In this paper, we present a framework for the intrinsic evaluation of RDF links, based on core principles of Web data integration and foundations of Information Retrieval. We measure the extent to which links facilitate the discovery of an extended description of entities, and the discovery of other entities in other data sets. We also measure the use of different vocabularies. We analysed links extracted from a set of data sets from the Linked Data Crawl 2014 using these measures.
The document discusses using open data and linked data on the web. It begins by defining open government data and its benefits like transparency and participation. It then explains how the semantic web uses linked data to connect related data across the web. Examples are given of government and other datasets that are available as linked open data. The presentation concludes by proposing future interdisciplinary collaboration to further develop applications using open and linked data.
An overview of the Network Overview Discovery and Exploration add-in for Excel 2007 (NodeXL), a social network analysis add-in for the familiar spreadsheet application. Visualize twitter, flickr, facebook, and email networks with just a few mouse clicks.
Making the Web Searchable - Keynote ICWE 2015Peter Mika
This document discusses making the web more searchable through semantic technologies. It begins with an overview of how web search currently works and its limitations, and then discusses how the semantic web aims to address these issues by adding explicit meaning and relationships between data on the web. It describes early skepticism of the semantic web from the information retrieval community and how it has become more practical over time. It also outlines research into semantic search done at Yahoo, including developing a knowledge graph and using semantic information to enhance search results. Finally, it discusses how semantic technologies are now being adopted more widely through efforts like schema.org.
Open Government Data, Linked Data, and the Missing Blocks in Korea Haklae Kim
This presentation discusses open government data and linked data. It provides examples of how open data initiatives from different governments have increased transparency and civic participation. Linked data practices are presented as a way to interconnect disparate datasets using semantic web standards. While Korea has strong e-government infrastructure, the presentation argues more can be done to implement open data and linked data practices. Participatory approaches are advocated to help design open data policies and solutions.
Social Semantic Web (Social Activity and Facebook)Myungjin Lee
The document discusses the concept of a Social Semantic Web (SSW). It describes how social networks like Facebook have begun to incorporate semantic data through initiatives like Open Graph that allow objects and actions to be defined and shared. This lays the foundation to map social graph data to semantic vocabularies and ontologies, thereby linking decentralized social data on the web. The integration of social interactions with semantic representations enables new, semantically-aware applications and services to leverage collective human contributions on the social web.
RDAP 15: You’re in good company: Unifying campus research data servicesASIS&T
Research Data Access and Preservation Summit, 2015
Minneapolis, MN
April 22-23
Cynthia Hudson-Vitale, Digital Data Outreach Librarian, Washington University
Brianna Marshall, Digital Curation Coordinator, University of Wisconsin-Madison
Amy Nurnberger, Research Data Manager, Columbia University
Freddy Limpens: From folksonomies to ontologies: a socio-technical solution.PhiloWeb
The document discusses approaches for semantically enriching folksonomies by structuring user-generated tags. It proposes a life-cycle approach involving initial automatic processing of tags to identify relationships, followed by user-centric structuring, conflict detection, and global structuring by a referent user. The goal is to turn flat folksonomies into structured folksonomies integrated with Semantic Web models while capturing diverse user perspectives.
La Comisión Federal de Telecomunicaciones advirtió a Telmex que no puede prestar el servicio de televisión de manera indirecta a través de una alianza con MVS Multivisión y EchoStar-Dish sin la autorización de la Cofetel o la Secretaría de Comunicaciones y Transportes. La Cofetel señaló que Telmex pretende prestar el servicio de televisión de manera indirecta a los usuarios finales, lo que viola su concesión. La concesión de Telmex prohíbe expresamente prestar servicios de televis
Análisis crítico literario del poema de David Auris VillegasMiguel Ramos
Este documento presenta un análisis crítico del poema "Voces del silencio" del poeta peruano David Auris Villegas. El análisis incluye una introducción al poema y al autor, un examen de la estructura y componentes del poema, y una conclusión. El análisis describe la invasión y explotación de África por parte de los conquistadores estadounidenses y denuncia los abusos y atropellos cometidos contra la población africana según lo representado en el poema.
Austral Consulting es una consultoría jurídico-financiera fundada en 1998 que ofrece servicios integrales a pymes y grandes empresas en 6 áreas: económica, jurídica, consultoría, auditoría, emprendimiento e internacionalización. Actualmente busca consolidarse en el mercado y sentar las bases para su expansión. Cuenta con un equipo de profesionales altamente calificados.
O Dr. Hugo Arcaro Neto, atuante nas áreas de Direito Tributário, Penal, Empresarial e Ambiental, em artigo, analisa o parcelamento tributário através de importantes apontamentos
cropped_Page 1 - Kochi - Malayalai Rich List June 4 2015Shenoy Karun
The document is a newspaper article that discusses the top 10 richest Malayalis (people of Kerala origin) based on their net worth. It provides brief profiles of each billionaire, including their core businesses and headquarters locations. Many made their fortunes in the Middle East in construction, retail, education and other industries. The top three are Ravi Pillai (net worth $2.8 billion), M.A. Yusuffali ($2.5 billion), and PNC Menon ($2 billion). The article notes the diversity of backgrounds and that most are self-made, coming from small trader families in Kerala.
A SÚMULA IMPEDITIVA DE RECURSOS E A GARANTIA DE ACESSO A JUSTIÇAFabiano Desidério
O documento discute a súmula impeditiva de recursos como mecanismo para acelerar processos judiciais e garantir o acesso à justiça. A súmula impeditiva permite que juízes não recebam recursos quando as sentenças estiverem de acordo com entendimentos do STJ ou STF. Apesar de acelerar processos, o instituto é criticado por limitar o contraditório e duplo grau de jurisdição. É necessário equilibrar celeridade com garantias fundamentais dos jurisdicionados.
This document contains quotes and sayings about mothers and motherhood. It discusses how being a mother is one of the highest paid jobs due to the payment of love. It also notes that a mother understands her child in a way others cannot, and that mothers are instinctive philosophers. The document wishes everyone a great Mother's Day.
Dokumen ini membahas rancangan dan pengembangan sistem surveilans penyakit yang meliputi:
1. Struktur institusional surveilans dari tingkat lokal hingga nasional untuk mengumpulkan dan memproses data secara terpadu.
2. Peran unit pusat dalam memberikan dukungan teknis dan administratif serta rekomendasi kebijakan.
3. Langkah-langkah desain surveilans mulai dari penentuan sampel, pengumpulan data, hingga
This document outlines the composition and decision-making processes of the Project Steering Committee for the BIOEUPARKS project. It states that the Committee is composed of one representative from each party, with each representative having one vote. Decisions are made by simple majority, except for certain issues which require a 2/3 qualified majority. The document also describes the roles and responsibilities of Work Package leaders in managing their tasks and reporting progress. It outlines the obligations of each party, including prompt reporting and notification of delays. Finally, it addresses payments from the European Union, which will be transferred directly to each party except in cases of default, when payment may be withheld until issues are resolved.
1) Alberta invested $2B to support 3-5 commercial scale carbon capture and storage (CCS) projects by 2015 and inject 5Mt of CO2.
2) Key lessons included ensuring transparency in project selection, using third party expertise, and addressing any regulatory gaps to provide certainty for investors.
3) Contract negotiations for CCS projects are complex with many details to consider around risk sharing, amendments, knowledge sharing, and defining commercial operations.
Creative Commons licenses provide a way for creators to retain copyright while allowing others to share, reuse, and remix their work. The document introduces Creative Commons and explains the problems with strict copyright and how Creative Commons licenses address them. Specifically, it notes that teachers do not hold copyright to their teaching resources but a Creative Commons policy allows applying an Attribution license to address this and realize the potential of openly sharing and collaborating with educational resources online.
This document provides a summary of an internship where the individual was tasked with restructuring the ePortfolio program at Westminster College. Through surveys and interviews, the intern found that students did not find the current ePortfolio program helpful. The intern proposes splitting the ePortfolio into two parts - an initial course requirement and a later career-focused portfolio. The intern also recommends allowing more flexibility in portfolio format and incorporating the career center. The goal is to create portfolios that better meet student and employer needs.
This document discusses criteria for evaluating websites and provides information about website domains and the information cycle in sciences. It outlines factors to consider when evaluating a website such as the authority, content, documentation, and currency. It also defines different types of website domains and provides examples. Additionally, it depicts the information cycle and differences between peer-reviewed and popular articles. It notes how to find peer-reviewed articles through a library's database or research databases like EBSCO.
Why online advertising is not a dirty word - Echelon 2014e27
Online advertising as a business model is typically shunned in Southeast Asia, mainly due to investor’s lack of faith in its potential as a serious revenue opportunity. Joe is here to share with you that the notion of startups not being able to monetise via online advertising might not hold true, especially looking at data from Southeast Asia’s online trends. Joe will compare similar mid sized markets like the Nordics, Latin America, Brazil, India and Russia and do a deep dive into the online trends from Singapore, Malaysia, Indonesia, Thailand, Philippines and Vietnam. Delegates can expect to get a better understanding on why online advertising is not a dirty word and where is Southeast Asia in terms of online advertising as a serious potential business model, and where are we headed towards.
Stay up to date on Asia's tech scene:
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1) The document discusses the problem of broken links in the Web of Data (also known as the Linked Data cloud). As resources on the web change over time, links between them can become broken when the target resource is removed, moved, or changed.
2) It defines two types of broken links: structurally and semantically broken. A structurally broken link occurs when the representations of the target resource can no longer be retrieved. A semantically broken link occurs when the target resource has changed meaning.
3) The analysis of changes between two versions of DBpedia data showed many resources were moved, removed, or created, demonstrating the broken links problem. Redirect links in DBpedia help trace moved resources.
This document discusses standardizing data on the web. It notes that data exists in many formats, from informal to curated, and machine to human readable. W3C has focused on integrating data at web scale using standards like RDF, SPARQL, and Linked Data principles. However, converting all data to RDF has challenges. Much data exists as CSV, JSON, XML and does not need full integration. The reality is data on the web is messy with many formats. Developers see converting data as too complex. The document discusses providing tools to publish Linked Data easily, or focusing on raw data without RDF. It notes different approaches can coexist and discusses a workshop on open data formats.
Linked Data: Opportunities for Entrepreneurs3 Round Stones
Multidisciplinary engineer and entrepreneur David Wood discusses the reasons, approaches and success stories for structured data on the World Wide Web. Linked Data is placed in context with the rest of the Web and that context is used to suggest some areas ripe for entrepreneurial innovation.
Sustainable operability: Keeping complex linguistic resources alive.Menzo Windhouwer
The document discusses the challenge of ensuring sustainable operability for complex linguistic resources like typological databases. It proposes mapping database contents and metadata to a standardized, self-describing format called IDDF when archiving. Generic software can then provide access to archived resources. The Typological Database System integrates multiple databases and maps their proprietary data models to IDDF to allow long-term usability. The TDS Curator project aims to establish this approach for typological databases within the CLARIN infrastructure.
Linked data for Libraries, Archives, Museumsljsmart
Linked data provides a method for publishing structured data on the semantic web so that it can be interlinked and made more useful. It builds upon standard web technologies like HTTP and URIs. The benefits of creating and using linked data include making data sharable, extensible, reusable, and improving discoverability. The process of creating linked data involves identifying data to expose, representing it in RDF/XML with URIs, and making that data available via HTTP URIs so others can discover and link to it.
Semantic Search: We're Living in a Golden Age for Information3 Round Stones
This talk outlines semantic search and living shows how we're living in a Golden Age for Information. The focus is on how government agencies can most effectively leverage the architecture of the Web to improve publication & consumption of high value open government data sets.
The document discusses analyzing the Web of Data (WoD) as a complex network at multiple scales. At the graph scale, the WoD contains over 100 nodes (datasets) connected by 350 edges. At the triple scale, a network of over 600,000 nodes and 800,000 edges was analyzed. Network analysis found the WoD exhibits properties like short average path lengths, power law degree distributions, and a few highly central nodes like DBpedia. Ongoing challenges include implicit links, multi-relations, and dynamics as data is continuously added.
This document provides a summary of a talk given by Tope Omitola on using linked data for world sense-making. The talk discussed EnAKTing, a project focused on building ontologies from large-scale user participation and querying linked data. It also covered publishing and consuming public sector datasets as linked data, including challenges around data integration, normalization and alignment. The talk concluded with a discussion of linked data services and applications developed by the project to enhance findability, search, and visualization of linked data.
Apache Kafka and the Data Mesh | Michael Noll, ConfluentHostedbyConfluent
Data mesh is a relatively recent term that describes a set of principles that good modern data systems uphold. A kind of “microservices” for the data-centric world. While the data mesh is not technology-specific as a pattern, the building of systems that adopt and implement data mesh principles have a relatively long history under different guises.
In this talk, we share our recommendations and picks of what every developer should know about building a streaming data mesh with Kafka. We introduce the four principles of the data mesh: domain-driven decentralization, data as a product, self-service data platform, and federated governance. We then cover topics such as the differences between working with event streams versus centralized approaches and highlight the key characteristics that make streams a great fit for implementing a mesh, such as their ability to capture both real-time and historical data. We’ll examine how to onboard data from existing systems into a mesh, modelling the communication within the mesh, how to deal with changes to your domain’s “public” data, give examples of global standards for governance, and discuss the importance of taking a product-centric view on data sources and the data sets they share.
This document discusses the Solid ecosystem and how it aims to decentralize data storage and control. It explains how Solid uses Linked Data to connect decentralized data across different sources while allowing individuals and applications to store and control access to data. The document argues that current systems overly centralize data in aggregators and that the Solid ecosystem seeks to create network flows both to and from aggregators to make individual data producers the source of truth for their data.
The document discusses linking building data from multiple systems using linked data principles. Building information is currently scattered across different systems for energy usage, maintenance, finance, occupancy, and more. However, effectively managing a building requires a holistic view across all this data. Linked data provides a method to expose, share, and connect building data from different systems and technologies by identifying objects with URIs and linking information with relationships. This can provide new insights by linking domains like energy and resource utilization. The challenges of data interoperability, information granularity, interpreting data, and empowering actions are also discussed. A case study of applying these approaches to link operational and sensor data from a research building is also presented.
Linked Data for the Masses: The approach and the SoftwareIMC Technologies
Title: Linked Data for the Masses: The approach and the Software
@ EELLAK (GFOSS) Conference 2010
Athens, Greece
15/05/2010
Creator: George Anadiotis (R&D Director)
Linked Data Generation for the University Data From Legacy Database dannyijwest
Web was developed to share information among the users through internet as some hyperlinked documents.
If someone wants to collect some data from the web he has to search and crawl through the documents to
fulfil his needs. Concept of Linked Data creates a breakthrough at this stage by enabling the links within
data. So, besides the web of connected documents a new web developed both for humans and machines, i.e.,
the web of connected data, simply known as Linked Data Web. Since it is a very new domain, still a very
few works has been done, specially the publication of legacy data within a University domain as Linked
Data.
1) The document discusses Linked Data and semantic application development. It provides examples of semantic technologies like the Google Knowledge Graph, Freebase, and DBpedia.
2) It explains key concepts of Linked Data including URIs, HTTP URIs, RDF, SPARQL, ontologies, and the semantic web stack. The four Linked Data principles are also summarized.
3) Architectures for Linked Data applications are covered including crawling, on-the-fly dereferencing, and federated query patterns. Components like wrappers, mediators, caches and triple stores are also discussed.
Lecture Notes by Mustafa Jarrar at Birzeit University, Palestine.
See the course webpage at: http://jarrar-courses.blogspot.com/2014/01/introduction-to-data-integration.html
and http://www.jarrar.info
you may also watch this lecture at: http://www.youtube.com/watch?v=TEgHq2J1OMo
The lecture covers:
- Web of Data
- Classical Web
- Web APIs and Mashups
- Beyond Web APIs and Mashups: The Data Web and Linked Data
- How to create linked-data?
- Properties of the Web of Linked Data
-
Environmental Linked Data - Semtech Biz LondonAlex Coley
This SPARQL update query reconstructs links between sample assessment records after publishing or removing data. It first deletes existing "replaces" and "isReplacedBy" links. It then inserts new links, finding an update record and predecessor based on replacement/withdrawal status and date. It ensures there is no sample between the update and predecessor.
1. DSNo%fy:
Handling
Broken
Links
in
the
Web
of
Data
Niko
Popitsch,
University
of
Vienna
/
Austria
niko.popitsch@univie.ac.at
Joint
work
with
Bernhard
Haslhofer
bernhard.haslhofer@univie.ac.at
April
30,
2010
WWW
2010
Conference
Raleigh, North Carolina, USA
2. Outline
IntroducIon
and
problem
definiIon
Related
work
and
soluIon
strategies
DSNoIfy
Usage
scenarios
and
design
Core
algorithm
EvaluaIon
Summary
&
Discussion
References
image: www.freeimages.co.uk
2
3. image by TBL / Hans Rosling
Linked
Data
Principles
(short
version):
(1)
use
HTTP
URIs
to
idenIfy
resources,
(2)
deliver
meaningful
representa%ons
(e.g.,
RDF,
XHTML)
when
these
are
dereferenced
(3)
link
to
other
resources
3
7. Ignore
broken
links
?
Not
a
good
idea
!
Broken
links
on
the
Web
are
annoying
for
humans
but
alternaIve
paths
may
be
used:
search
engines,
URL
manipulaIon,
alternaIve
informaIon
providers,
etc.
Much
harder
for
machines
in
a
Web
of
Data
!
reduced
data
accessibility
data
inconsistencies
7
8. Avoid
broken
links
?
Great!
But
hard
to
achieve
in
the
Web
environment…
SoluIon
strategies
that
solve
problem
only
parIally:
RelaIve
references
embedded
links
redundancy
SoluIon
strategies
that
are
not
commonly
applicable:
Versioned/staIc
collecIons
regular
(predictable)
updates
dynamic
links
indirecIon
services
(PURLs,
DOIs)
8
9. Solve
the
problem
(1/2)
:
No%fica%on
No%fica%on
strategy:
Data
source
“knows“
about
the
events
that
are
taking
place
NoIfies
clients
Client
may
then
check
their
links
and
fix
the
broken
ones
Current
AcIviIes:
WOD-‐LMP
[Volz
et
al.
2009]
Triplify
Linked
Data
Update
Log
[Auer
et
al.
2009]
PubSubHubbub
/
sparqlPuSH
1
h^p://groups.google.com/group/dataset-‐dynamics
…
9
10. Solve
the
problem
(2/2):
Detect
and
correct
Detect
and
correct
If
noIficaIon
is
not
applicable
Clients
detect
broken
links
and
try
to
fix
them
2
Current
acIviIes:
Robust
hyperlinks
[Phelps
&
Wilensky
2000]
–
Web
documents
PageChaser
[Morishima
et
al.
2009]
–
Web
documents
DSNo%fy
–
aims
at
becoming
a
general
framework
for
fixing
broken
links
…
10
12. Events
that
poten%ally
lead
to
broken
links
Broken
links
due
to
dele%on
events
A
dele%on
event
takes
place
at
Ime
t
when
a
resource
had
(dereferencable)
representaIons
at
t-‐Δ
but
has
none
at
Ime
t
Vice
versa:
create
event
Easy
to
detect
12
13. Events
that
poten%ally
lead
to
broken
links
Broken
links
due
to
update
events
An
update
events
takes
place
at
Ime
t
when
a
resource
had
different
representaIons
at
t-‐Δ
compared
to
the
ones
at
Ime
t
Resource
updates
resulIng
in
representaIons
with
different
meaning
(seman%c
dri_)
may
lead
to
seman%cally
broken
links
Hard
to
detect,
open
problem
13
15. Events
that
poten%ally
lead
to
broken
links
What
about
move
events
?
a b
A
move
event
from
a
to
b
takes
place
at
Ime
t
when
There
were
no
representaIons
of
b
at
Ime
t-‐Δ
There
are
no
representaIons
of
a
at
Ime
t
The
representaIons
of
at-‐Δ
are
more
similar
to
the
ones
of
bt
than
to
the
ones
of
any
other
considered
resource
at
Ime
t
The
calculated
similarity
between
them
is
>
than
a
threshold
Instance
matching
problem!
15
16. Events
that
poten%ally
lead
to
broken
links
The
core
algorithm
of
DSNoIfy
detects
move
events
based
on
resource
similari%es
16
17. Changes
in
DBpedia
Class Snapshot 3.2 Snapshot 3.3 Moved Removed Created
Person
213,016 244,621 2,841 20,561 49,325
Place 247,508 318,017 2,209 2,430 70,730
Organisation 76,343 105,827 2,020 1,242 28,706
Work 189,725 213,231 4,097 6,558 25,967
Resources that were moved/removed/created between the DBpedia
snapshots 3.2 (October 2008) and 3.3 (May 2009)
20. Usage
Scenario
ApplicaIon
that
consumes
various
LD
sources
and
may
update
a
“source
dataset”
20
21. Usage
Scenario
DSnoIfy
is
an
add-‐on
for
applicaIons
that
want
to
preserve
high
link
integrity
in
their
data
21
22. Usage
Scenario
Other
actors
(applicaIons)
might
also
be
interested
in
these
events
22
23. General
Approach
Periodically
access
linked
data
sources
Extract
features
from
resource
representa%ons
Combine
them
to
comparable
feature
vectors
(FV)
Store
them
in
3
indices
1st
index
represents
the
current
state
of
the
monitored
data
2nd
index
stores
items
that
became
recently
unavailable
3rd
index
stores
archived
feature
vectors
Periodically
access
index
1+2
and
log
detect
events
Periodically
update
indices
1-‐3
23
24. From
Resource
to
Feature
Vector
Both,
data
type
and
object
proper%es
supported
Feature
influence
is
weighted
Some
are
used
in
plausibility
checks
RDFHash
over
all
features
24
25. Move
Event
Detec%on
Pair
wise
comparison
using
a
vector
space
model
Feature
comparison
e.g.,
using
Levenshtein
similarity.
It
is
sufficient
to
compare
recently
added
and
recently
removed
feature
vectors
!
Two
thresholds
for
comparing
the
similarity
between
FVs
represenIng
created
and
removed
items:
lower
threshold:
select
predecessor
candidates
consider
URI
of
added
FV
as
possible
new
URI
of
resource
represented
by
removed
FV
upper
threshold:
decidable
by
DSNoIfy?
decide
whether
such
a
candidate
can
be
automaIcally
selected
or
whether
human
user
has
to
be
asked
for
assistance.
25
26. Core
Housekeeping
Algorithm
Ci,Ri and Mi,j denote create, remove and move events of items i and j. mx 26
and hx denote monitoring and housekeeping operations respectively.
27. Resul%ng
Data
Structures
DSNoIfy
constructs
three
data
structures:
An
event
log
containing
all
events
detected
by
the
system
A
log
containing
all
“event
choices”
DSNoIfy
cannot
decide
on
and
a
linked
structure
of
feature
vectors
consItuIng
a
history
of
the
respecIve
items.
Accessible
via
image: www.freeimages.co.uk
Linked
data
interface
Java
interface
XML-‐RPC
27
28. Evalua%on
Core
quesIons:
Does
DSNoIfy
work
with
real
data
?
How
does
housekeeping
frequency
affect
its
effec%veness
?
Used
data:
Data
from
DBpedia
(8380
events)
and
IIMB
(10
x
222
events)
were
used
Hand-‐picked
features
based
on
coverage
and
entropy
in
the
data
sets
Results:
Housekeeping
frequency
and
data
source
dynamics
determine
the
number
of
FV-‐pairs
that
have
to
be
compared
(scalability)
Number
of
FV
comparisons
as
well
as
coverage
and
entropy
of
indexed
features
influence
accuracy
of
method
28
29. Evalua%on
-‐
Results
Influence
of
data
source
agility
and
housekeeping
frequency
on
the
accuracy
of
the
DSNoIfy
algorithm
29
30. Discussion
Broken
links
are
a
considerable
problem
in
a
Web
of
Data
The
broken
link
problem
is
partly
a
special
case
of
the
instance
matching
problem
DSNo%fy
is
an
event-‐based
approach
to
this
problem:
DSNoIfy
can
be
used
as
an
add-‐on
for
data
sources
that
want
to
preserve
link
integrity
in
their
data
We
cannot
“cure”
the
Web
of
Data
from
broken
links
(but
at
least
alleviate
the
pain
a
bit
:)
30
31. Current
and
Future
Work
Scalability
issues,
evaluaIon
AutomaIc
feature
selecIon
(parameter
esImaIon)
Event
algebra:
high-‐level
composite
events
EvaluaIon
with
other
data
sources
(e.g.,
file
system)
Dataset
dynamics:
vocabularies,
protocols,
formats
…
Thank
You
!
niko.popitsch@univie.ac.at
images: NASA / NSSDC
h^p://www.dsnoIfy.org
31
32. References
and
Related
Work
H.
Ashman.
Electronic
document
addressing:
dealing
with
change.
ACM
Comput.
Surv.,
32(3),
2000.
F.
Kappe.
A
scalable
architecture
for
maintaining
referenIal
integrity
in
distributed
informaIon
systems.
Journal
of
Universal
Computer
Science,
1(2):84–104,
1995.
A.
Morishima,
A.
Nakamizo,
T.
Iida,
S.
Sugimoto,
and
H.
Kitagawa.
Bringing
your
dead
links
back
to
life:
a
comprehensive
approach
and
lessons
learned.
In
HT
’09:
Proceedings
of
the
20th
ACM
conference
on
Hypertext
and
hypermedia,
pages
15–24,
2009.
T.
A.
Phelps
and
R.
Wilensky.
Robust
hyperlinks
cost
just
five
words
each.
Technical
Report
UCB/
CSD-‐00-‐1091,
EECS
Department,
University
of
California,
Berkeley,
2000
J.
Volz,
C.
Bizer,
M.
Gaedke,
and
G.
Kobilarov.
Discovering
and
maintaining
links
on
the
web
of
data.
In
8th
InternaGonal
SemanGc
Web
Conference,
2009.
A.
Hogan,
A.
Harth,
and
S.
Decker.
Performing
object
consolidaIon
on
the
semanIc
web
data
graph.
In
Proceedings
of
the
1st
I3:
IdenGty,
IdenGfiers,
IdenGficaGon
Workshop,
2007
A.
Ferrara,
D.
Lorusso,
S.
Montanelli,
and
G.
Varese.
Towards
a
benchmark
for
instance
matching.
In
Ontology
Matching
(OM
2008),
volume
431
of
CEUR
Workshop
Proceedings.
CEUR-‐WS.org,
2008
C.
Bizer,
T.
Heath,
and
T.
Berners-‐Lee.
Linked
data
-‐
the
story
so
far.
InternaGonal
Journal
on
SemanGc
Web
and
InformaGon
Systems
(IJSWIS),
5(3),
2009
S.
Auer,
S.
Dietzold,
J.
Lehmann,
S.
Hellmann,
and
D.
Aumüller.
Triplify:
light-‐weight
linked
data
publicaIon
from
relaIonal
databases.
In
WWW
’09,
New
York,
NY,
USA,
2009.
ACM
W.
Y.
Arms.
Uniform
resource
names:
handles,
purls,
and
digital
object
idenIfiers.
Commun.
ACM,
44
(5):68,
2001.
32