DiSo Project Linked Data What is Linked Data? The Semantic Web is a Web of Data — of dates and titles and part numbers and chemical properties and any other data one might conceive of. The collection of Semantic Web technologies (RDF, OWL, SKOS, SPARQL, etc.) provides an environment where application can query that data, draw inferences using vocabularies, etc. However, to make the Web of Data a reality, it is important to have the huge amount of data on the Web available in a standard format, reachable and manageable by Semantic Web tools. To achieve and create Linked Data, technologies should be available for a common format (RDF), to make either conversion or on-the-fly access to existing databases (relational, XML, HTML, etc). What is Linked Data Used For? Linked Data lies at the heart of what Semantic Web is all about: large scale integration of, and reasoning on, data on the Web. Examples Learn More Tim Berners-Lee's note on Linked Data gives a succinct description of the Linked Data principles.
The Tabulator (1) Tim Berners-Lee Tim coded up the original version at odd times in November and December 2005. See Links on the Semantic Web from Dec 2005 Undergraduate Research Opportunity Program (UROP) over June-August 2006 people are below. Yushin Chen "Joyce" wrote the calendar views, and incorporated the Simle timeline. Lydia Chilton Lydia is working on statistical analysis, charts, etc. Ruth Dhanaraj Ruth worked on the Tabulator in January 2006, adding the asynchronous fetching of documents during queries, etc. Adam Lerer Adam works on the back-end -- the query system, and generic stuff around the query UI. Jim Hollenbach Jim is responsible for the map view. David Sheets David wrote the RDF parser, and does a lot of architecture and release engineering. Thanks also to Dan Connolly and Ralph Swick for co-supervising students and for ideas, support, testing and encouragement. When you use these techniques on the server, the tabulator works better. pulling in data from the web as you go.
Startup America: A Campaign To Celebrate, Inspire And Accelerate Entrepreneurship Note from the editor: This is a guest post from Aneesh Chopra, United States Chief Technology Officer. During last week’s State of the Union address, President Obama challenged the Nation to out-educate, out-innovate, and out-build our competition to win the future. A critical ingredient in this endeavor is the creative spirit of the American entrepreneur that featured prominently in the President’s Strategy for American Innovation – a framework for long-term economic growth and sustainable job creation. Today, President Obama celebrated the launch of Startup America, a national (public/private) campaign to celebrate, inspire, and accelerate high-growth entrepreneurship across all corners of the country, and the formation of the Startup America Partnership to catalyze private support for entrepreneurial ecosystems. To kick-start the campaign, the Obama Administration announced 27 public and private commitments organized across five key goals: 1. Stay tuned. 2. 3. 4. 5.
5 Simple Provenance Statements | Semantic Web Activity News Providing easily processable information about the provenance or origins of Web pages and data is important. It lets us give credit where its due and it helps others trust the information we publish on the Web. Here’s some simple provenance statements one can make using PROV-DM, the recently released working draft of a data model for provenance from the W3C. Before getting into the examples, a couple of notes: We are still working on cleaning it up and simplifying the presentation of the data model. The exact namespace we will use is still being sorted out. 1) Derivation Here’s how we would say that a blog post that was derived from a longer report. @prefix ex: < 2) Summarization Maybe the blog post was actually a summary of the longer report. @prefix ex: < 3) Attribution We can provide more details and say that a blog was attributed to a particular person, Paul. 4) Generation @prefix ex: < 5) Participation
Planète Web Sémantique W3C Standards Tools This page gives an overview of software tools related to the Semantic Web or to semantic technologies in general. Due to the large amount of tools being created in the community, this site is always somewhat outdated. Contributions and updates are welcomed. See also: Tool Chains Adding your own Adding your own tool is as easy as creating a page. Do not forget to use a suitable category to classify the tool, otherwise it will not appear below. If your tool is an OWL 2 implementation or a RIF implementation not yet listed here, please consider to add it. Current tools on semanticweb.org.edu The following tools are currently recorded in this wiki. RDF2Go (Version 4.8.3, 4 June 2013) Bigdata (Version 1.2.3, 31 May 2013) Semantic Measures Library (Version 0.0.5, 4 April 2013) HermiT (Version 1.3.7, 25 March 2013) Fluent Editor (Version 2.2.2, 20 March 2013) The following is a list of all tools currently known (use the icons in the table header to sort by any particular column)
63 EdTech Resources You May Have Missed–Treasure Chest, Feb. 6, 2011 Here is this week’s edition of Treasure Chest–63 EdTech Resources You May Have Missed. I know, that’s a lot! What’s funny though is that I thought this week would bring my fewest number of resources. Due to time constraints this week, I didn’t think I was doing a very good job of curating resources. So what happens? I would also like to thank Larry Ferlazzo for including this blog in his “The Best Blogs…” category. “Tech The Plunge” Is A Blog Worth Reading | Larry Ferlazzo’s Websites of the Day…–Tech The Plunge is an excellent resource-sharing blog written by Jeff Thomas. On with the show! Featured Tom Barrett’s Interesting Ways Series—All in One Location!!! Tools How-To iPad, iPod, etc. My Favorite iPad Apps–If you are curious to know what apps have I installed on my iPad, check these interactive screenshots for a complete list of my favorite iPad apps.smartr for iPhone, iPod touch, and iPad on the iTunes App Store–Smartr’s the fastest way to get your news on Twitter. Miscellaneous Videos
The Challenge of Building the Semantic Web The Semantic Web is often described as an extension of the current Web. The idea of what extending the Web should look like can be seen in Linked Data. In order to better understand the importance of Linked Data, one has to understand the context in which it emerged, i.e. the problem it has been trying to solve. In Linked Data – design issues in 2006 Tim Berners-Lee wrote: Many research and evaluation projects in the few years of the Semantic Web technologies produced ontologies, and significant data stores, but the data, if available at all, is buried in a zip archive somewhere, rather than being accessible on the web as linked data. Put in this perspective, Linked Data did an important thing – it required that data is actually put on the Web, and demanded that resolvable (HTTP) URIs are used as identifiers. Therefore, one can say that Linked Data paved the way for structured data to evolve into what really can be considered as some sort of a web. Different data models The problem
Top-Down: A New Approach to the Semantic Web Earlier this week we wrote about the classic approach to the semantic web and the difficulties with that approach. While the original vision of the layer on top of the current web, which annotates information in a way that is "understandable" by computers, is compelling; there are technical, scientific and business issues that have been difficult to address. One of the technical difficulties that we outlined was the bottom-up nature of the classic semantic web approach. Specifically, each web site needs to annotate information in RDF, OWL, etc. in order for computers to be able to "understand" it. As things stand today, there is little reason for web site owners to do that. But there are alternative approaches. In this post, we will look at the solution that we call the top-down approach to the semantic web, because instead of requiring developers to change or augment the web, this approach leverages and builds on top of current web as-is. Why Do We Need The Semantic Web? Conclusion