Semantic Web: Frequently Asked Questions
Is this the "Semantic Web"?
Yes and no. Like the long-term vision of the Semantic Web, ThoughtMesh treats every page on the Web as a potential "database record" to be searched. Unlike the conventional XML-powered vision of the Semantic Web, however, ThoughtMesh's data are only minimally structured in the page itself; instead, a registry of tags housed on a remote host serves to connect all the individual pages. But it's still a model of distributed publication, since in principle the same pages can be navigated via independently operated registries.
Source: thoughtmesh.net
What is the Semantic Web?
The Semantic Web is an ambitious project to make the information on the World Wide Web computer understandable.
Source: www.semantic-systems-biology.org
The Semantic Web is the next generation of the Internet. It is currently in its infancy, but it aims to extend the Internet so that the information is structured in a way that meaning is easily interpreted by computers.
Source: www.essi-cluster.org
The Semantic Web is an extension of the current Web that allows the meaning of information to be precisely described in terms of well-defined vocabularies that are understood by people and computers. On the Semantic Web information is described using a new W3C standard called the Resource Description Framework (RDF). RDF is based on the popular Extensible Markup Language (XML). ...
Source: www.semanticwebsearch.com
What are Semantic Web Services?
Semantic Web Services are the proper means to access semantically enriched data.
Source: www.essi-cluster.org
How is the Semantic Web related to the existing Web?
The Semantic Web is an
extension of the current Web and not its replacement. Islands of RDF and possibly related ontologies can be developed incrementally. Major application areas (like Health Care and Life Sciences) may choose to “locally” adopt Semantic Web technologies, and this can then spread over the Web in general. In other words, one should not think in terms of “rebuilding” the Web.
Source: www.w3.org
What is “inference” on the Semantic Web?
Broadly speaking, inference on the Semantic Web can be characterized by discovering new relationships. As described elsewhere in this FAQ , the data is modeled as a set of (named) relationships between resources. “Inference” means that automatic procedures can generate new relationships based on the data and based on some additional information in the form of an ontology or a set of rules. ...
Source: www.w3.org
Broadly speaking, inference on the Semantic Web can be characterized by discovering new relationships. As described elsewhere in this FAQ , the data is modeled as a set of (named) relationships between resources. “Inference” means that automatic procedures can generate new relationships based on the data and based on some additional information in the form of an ontology or a set of rules. ...
Source: www.w3.org
What is the Semantic Web activity at W3C?
The Semantic Web Activity at W3C groups together all the Working and Interest Groups whose goals are to improve the current Semantic Web technologies or to contribute to their wider adoption. The activity home page gives an up-to-date list of the current work at W3C. (permalink) How does the Semantic Web relate to…
Source: www.w3.org
What is the “killer application” for the Semantic Web?
It is difficult to predict what a “killer application” is for a specific technology, and the prediction is often erroneous. That said, the integration of currently unbound and independent “silos” of data in a coherent application is certainly a good candidate. Specific examples are currently explored in areas like Health Care and Life Sciences , Public Administration , Engineering , etc.
Source: www.w3.org
How is Semantic Web Search implemented?
All of Semantic Web Search, including this web site, is implemented using multiple RDF Gateway applications ( crawlers, document repositories, indexers, query coordinators, and web site ) that are distributed on our corporate computing grid. All the features we needed to build Semantic Web Search are in RDF Gateway
Source: www.semanticwebsearch.com
What are Data Semantics & the Semantic Web?
Semantics inspires a vision in which data carries unambiguous business meaning that can be found, aggregated and used accurately and flexibly without prior knowledge of the data’s specific format. Data Semantics are tightly linked in many ways with the vision of a Semantic Web in which the W3C is taking a leading role .
Source: www.yehuditcohen.com
Who is developing the Semantic Web?
This is an initiative of the W3C, which is the organization that defines the standards and protocols upon which the World Wide Web operates. You are viewing this web page via HTTP that was also developed by W3C. Like HTTP, the protocols for the Semantic Web are defined by W3C and (for the most part) organizations cannot ignore W3C standards, although they occasionally “add” to them, which for example explain why some web browsers display web pages slightly differently.
Source: biocorder.org
Is the Semantic Web already here ?
Semantic engineers around the world are gradually building a global Semantic Web. Wikipedia has a list of some of the major Semantic Web projects
Source: www.ncess.ac.uk
Is the CSE a Semantic Web solution?
Rather than trying to translate human expressions into sterile constructs to provide improved machine comprehension, the CSE extracts "knowledge fragments" from unstructured human expression and seeks to use the machine to deliver an automated approximation of intuitive human comprehension.
Source: www.correlationconcepts.com
What is involved in developing an ontology using Semantic Web technologies?
The real difficulty, when developing an ontology, is to
understand the problem that has to be modeled and
find an agreement on a community level. RDF Schemas and/or OWL provide a framework to formalize those ontologies in a specific language; the time and energy needed to learn and use them is only a fraction of the time needed to develop an ontology itself, ie, understand the terms and the relationships of given area of knowledge and agree with your peers. ...
Source: www.w3.org
Where do I find tools for Semantic Web development?
There are several lists on the Web that give a more-or-less comprehensive overview of the various available tools. There is a Wiki page on the W3C ESW Wiki site that is maintained but the W3C staff as well as the community at large. This page includes references to programming environments, validators that can be used to validate RDF/XML data or OWL ontologies, SPARQL endpoints, specialized editors or triple databases. ...
Source: www.w3.org
Does the Semantic Web try to impose meaning from the top?
What the Semantic Web technologies do is to define the “language” with well understood rules and internal semantics, ie, RDF Schemas , various dialects of OWL , or SKOS . Which of those formalisms are used (if any) and what is “expressed” in those language is entirely up to the applications. Ontologies may be developed by small communities, from “below”, so to say, and shared with other communities.
Source: www.w3.org
How do I put my data on the semantic web?
If it's just a small amount of data - for example, a foaf file - you might just create it by hand (or with a helper application) and place it in a web accessible location. For larger amounts of data, you may want to generate the RDF programatically (e.g. from a product database or document metadata repository) using a RDF platform that supports web protocols such as RDF Gateway
Source: www.semanticwebsearch.com
What is the relationship between IODT and semantic Web standards?
EODM implements all the language constructs of RDFS/OWL. The EODM parser supports RDF/XML syntax input/output and have passed all W3C RDF test cases. The EODM RDFS/OWL inference engines support RDFS entailment and a subset of OWL DL language.
Source: www.alphaworks.ibm.com
How Do I Build A Semantic Web Page?
draft reply from danbri@w3.org) HTML is a Web page format designed primarily for sharing documents that humans might read. RDF is a Web page format designed for sharing documents that machines will process. There are tools for creating both kinds of document, and for converting and linking between them. To create RDF content for use on the Semantic Web, you can use an RDF authoring tool (@@list) or instead, create special kinds of HTML document that can be automatically converted into RDF. ...
Source: www.w3.org
Was ist das "semantic Web"?
Mit wenigen Worten gesagt: Die Daten werden selbst Teil des Web. Für die Personaldienstleistungsbranche heißt das: Die Kenntnisprofile, die bisher in den Datenbanken der Personaldienstleister vorgehalten wurden, wandern ins Web. Personalabteilungen können dann mittels Suchmaschinen selbst nach geeigneten Spezialisten suchen. Eine gute und ausführlichere Beschreibung zum Thema semantic Web bietet der Sofwarehersteller Altova. www.altova.com
Source: www.openprofiles.de
What are Web services / Semantic Web services?
According to the definition of the W3C, "a Web service is a software system identified by a URI, whose public interfaces and bindings are defined and described using XML. Its definition can be discovered by other software systems. These systems may then interact with the Web service in a manner prescribed by its definition, using XML based messages conveyed by internet protocols. ...
Source: www.tripcom.org
What is the role of Semantic Web in this initiative?
The creation of systematic pattern languages using semantically interconnected pieces of knowledge (patterns, etc.) can serve as a continually evolving body of knowledge on software-intensive systems. This body of knowledge can facilitate scientific inquiry and capture interconnected bodies of empirical evidence in a manner that is also accessible to practitioners, who can in turn augment the knowledge with experience-based verification. ...
Source: cse-ferg41.unl.edu
What is the role of Ontologies in the Semantic Web?
In the case of building a media semantic web, for instance, implementing ontologies can help the users to find the data they need quicker and more accurately. But note that data can be located more efficiently only if good ontologies are implemented.
Source: www.ncess.ac.uk
What does SearchMonkey have to do with the Semantic Web?
First, SearchMonkey builds on Semantic Web standards. SearchMonkey can make use of metadata embedded inside web pages using either microformats , eRDF or RDFa. This metadata is picked up by the Yahoo! crawler and made available for all SearchMonkey applications. You can also develop data services to extract metadata from Web pages using XSLT or submit metadata directly to the search engine in the form of a data feed. In both cases the engine expects the data in the dataRSS format, which is also based on RDF . ...
Source: developer.yahoo.com
How does SWSE crawl the Semantic Web?
We used a version of MultiCrawler to crawl the Semantic Web. An ISWC publication about MultiCrawler is available online. MultiCrawler transforms all crawled documents to RDF and creates an index over them. The focus is to find and transform Semantic Web documents, like RDF files and RSS feeds. To find URLs to Semantic Web files we extract URLs from the HTML Web, and follow rdfs:seeAlso links in RDF files.
Source: swse.deri.org
What role do ontologies and/or rules have on the Semantic Web?
On the Semantic Web both ontologies and rules are used to express extra constraints and logical relationships among resources. An example for their usage is to help data integration when, for example, different terms are used to describe the same thing in different data sets, or when a bit of extra knowledge may lead to the discovery of new relationships. Ontologies and rules refer to two different traditions stemming from logic, as developed in the past decades. ...
Source: www.w3.org
How can I learn more about the Semantic Web?
Dave Beckett's Resource Description Framework (RDF) Resource Guide gives a quite comprehensive list of references to Semantic Web related articles. The home page of the Semantic Web Activity lists all the recommendations, gives references to some of the presentations, articles, etc, that have been given by the W3C staff or the members of the working groups on the subject. A separate page lists a number of tutorials that might be of interest. ...
Source: www.w3.org
Can I see Semantic Web data directly in my browser?
You can have a human-readable display of RDF data by using RDF data browsers like the Tabulator , Disco , or the OpenLink RDF Browser , and web browser extensions like PiggyBank or the Semantic Radar . While end users will not have a need to see Semantic Web data (instead they will benefit from better information systems built on top of it) it may be helpful to developers to be aware of Semantic Web data directly so that they can use this information in their applications.
Source: www.w3.org
