The current stack of modeling languages for the web of data provide excellent mechanisms for capturing the static structure of data. SKOS can be used to describe concept hierarchies and vocabularies. RDF Schema and OWL can be used to define classes, properties and relationships between these conceptual entities. There is, however, a key set of application requirements these languages have not dealt with. Namely, the way to describe general computational behavior of objects.

These requirements are now addressed by an emerging standard that uses SPARQL to express rules for the Semantic Web. It is called SPARQL Inferencing Notation or SPIN. Because of its heavy use of SPARQL it is also known as SPARQL Rules. SPIN has recently been accepted by W3C as a member submission from TopQuadrant, OpenLink and RPI.

SPIN combines concepts from object oriented languages, query languages, and rule-based systems to describe object behavior on the web of data. Read more

SemTechBiz is Less Than 2 Weeks Away

The Semantic Tech & Business Conference (SemTechBiz) is coming to San Francisco on June 3-7! Join us for case studies, innovative panels, tutorials, and keynotes that will provide you with practical advice, hands-on guidance, and breakthrough approaches to solving business problems with semantic technology. Passes go up $200 at the door. Sign up now and save !

Stephen Wolfram generously gave me a two-hour demo of Wolfram Alpha last evening, and I was quite positively impressed.  As he said, it’s not AI, and not aiming to be, so it shouldn’t be measured by contrasting it with HAL or Cyc but with Google or Yahoo. 

Read more

Executive Summary

A JCAF agent represents a network agent with capabilities specialized for defending the cyber-assets of an organization.  Agents may receive and execute instructions, either in isolation or in collaboration with other agents, Web applications, or people. We need to ensure that an agent can correctly execute payloads (scripts or programs) that they receive or retrieve. The potential incompatibility of agents and payloads motivates the need for a mechanism to describe and reason about agents, payloads, and other related assets.

Read more