The Web
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Semantic Web - W3C
The program has been published for the upcoming W3C MultilingualWeb workshop in Luxembourg, 15-16 March 2012 . The keynote speaker will be Ivan Herman, Semantic Web Activity Lead at the W3C. He is followed by a strong line up in sessions entitled Developers, Creators, Localizers, Machines, and Users, including speakers from Microsoft, WikiMedia Foundation, Joomla!, Intel, the European Commission, Mozilla, CNGL, the UN FAO, and more. On the second day we will hold Open Space breakout discussions, led by Jaap van der Meer of TAUS. The MultilingualWeb workshops , funded by the European Commission and coordinated by the W3C, look at best practices and standards related to all aspects of creating, localizing and deploying the multilingual Web.
What is Inference? Broadly speaking, inference on the Semantic Web can be characterized by discovering new relationships. On the Semantic Web, 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 a vocabulary, e.g., a set of rules. Whether the new relationships are explicitly added to the set of data, or are returned at query time, is an implementation issue.
Inference - W3C
Vertical Applications - W3C
What are Vertical Applications? Vertical applications is the term used at W3C to denote particular, generic application areas, specific communities, etc, that explore how W3C technologies (e.g., Semantic Web technologies) can help their operations, improve their efficiencies, provide better user experiences, etc. Some of these application areas may decide to form some sort a group at W3C to cooperate with other W3C members to explore these possibilities further.
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. RDF provides the foundation for publishing and linking your data. Various technologies allow you to embed data in documents (RDFa, GRDDL) or expose what you have in SQL databases, or make it available as RDF files. However, just as relational databases or XML need specific query languages (SQL and XQuery, respectively), the Web of Data, typically represented using RDF as a data format, needs its own, RDF-specific query language and facilities. This is provided by the SPARQLquery language and the accompanying protocols.
Query - W3C
What is a Vocabulary? On the Semantic Web, vocabularies define the concepts and relationships (also referred to as “terms”) used to describe and represent an area of concern. Vocabularies are used to classify the terms that can be used in a particular application, characterize possible relationships, and define possible constraints on using those terms. In practice, vocabularies can be very complex (with several thousands of terms) or very simple (describing one or two concepts only).
Ontologies - W3C
Data - W3C
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.