Posts Tagged ‘Pellet’

Semantic Web Jobs: Automation Technologies, Inc.

Automation Technologies Inc. LogoAutomation Technologies, Inc. is looking for a “Senior Java Developer with an Ontology background” in the Fort George Meade, Maryland area. The position requires an Active Top Secret/SCI (TS/SCI) with Polygraph Clearance.   This is an additional position added to the ATI team.

While the main role is Java development, the person in this role “partners with senior customer leadership to provide strategic support to help organizations improve performance by using ontologies, triple stores and reasoning for analyzing situations, identifying gaps, and proposing solutions. Serves as a performance change agent; influences stakeholder decisions by “selling” strategic performance concepts. Uses a variety of performance strategies, tools, and interventions (i.e., organizational development, needs or trend analysis, needs assessment, training evaluation, etc.) to implement change, monitor solution implementation, and assure organizational success. Develops networks and alliances, and collaborates across boundaries with a wide range of stakeholders. Serves as an expert resource for customer executives. ”

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The Business Value of Reasoning with Ontologies

[Editor's note: this guest post was co-written by Héctor Pérez-Urbina (Clark & Parsia) and Juan Sequeda (Capsenta)]

Image of a human brain with computer data overlay.Important enterprise business logic is often buried deep within a complex ecosystem of applications. Domain constraints and assumptions, as well as the main actors and the relations with one another, exist only implicitly in thousands of lines of code distributed across the enterprise.

Sure, there might be some complex UML diagrams somewhere accompanied by hundreds of pages of use case descriptions; but there is no common global representation of the domain that can be effectively shared by enterprise applications. When the domain inevitably evolves, applications must be updated one by one, forcing developers to dive into long-forgotten code to try to make sense of what needs to be done. Maintenance in this kind of environment is time-consuming, error-prone, and expensive.

The suite of semantic technologies, including OWL, allows the creation of rich domain models (a.k.a., ontologies) where business logic can be captured and maintained. Crucially, unlike UML diagrams, OWL ontologies are machine-processable so they can be directly exploited by applications.

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Introduction to: Reasoners

Name Tag: Hello, we are ReasonersReasoning is the task of deriving implicit facts from a set of given explicit facts. These facts can be expressed in OWL 2 ontologies and stored RDF triplestores. For example, the following fact: “a Student is a Person,” can be expressed in an ontology, while the fact: “Bob is a Student,” can be stored in a triplestore. A reasoner is a software application that is able to reason. For example, a reasoner is able to infer the following implicit fact: “Bob is a Person.”

Reasoning Tasks

Reasoning tasks considered in OWL 2 are: ontology consistency, class satisfiability, classification, instance checking, and conjunctive query answering.

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WEBCAST: Enterprise Policy Management with Semantic Technologies (presenter, Evren Sirin)

If you missed this excellent live webcast with Evren Sirin, CTO, Clark & Parsia, the recorded webcast is now available.  You also can meet Evren in Washington DC, November 29-December 1, 2011 for SemTechBiz DC. The customer mentioned in this case study, JP Morgan Chase, will be co-presenting and discussing how they are implementing Access Control using Semantic Technologies.

Enterprise Policy Management with Semantic Technologies with Evren Sirin - click to watch the webcast.

DESCRIPTION

Access control is an essential part of nearly every IT system; Read more