From: John Flynn (jflynn@bbn.com)
Date: 11/08/02
HotDAML Newsletter Keeping you up to speed on happenings in the world of DAML http://www.daml.org <http://www.daml.org/> _____ Friday, November 8, 2002 - Issue 9 _____ New Stories: DAML PI Meeting held in Portland, OR The DAML Principal Investigators meeting was held October 16 - 18 in Portland, OR. Significant progress was reported in the areas of language, tools and application development. Additionally, the DARPA DAML Program Manager, Murray Burke, provided his vision for focusing the research efforts during 2003. The PI meeting agenda and links to the presentations is at: http://www.daml.org/meetings/2002/10/pi/ W3C releases Web Ontology Language (OWL) Guide Version 1.0 Abstract: The World Wide Web as it is currently constituted resembles a poorly mapped geography. Our insight into the documents and capabilities available are based on keyword searches, abetted by clever use of document connectivity and usage patterns. The sheer mass of this data is unmanageable without powerful tool support. In order to map this terrain more precisely, computational agents require machine-readable descriptions of the content and capabilities of web accessible resources. These descriptions must be in addition to the human-readable versions of that information. The Web Ontology Language (OWL) is intended to provide a language that can be used to describe the classes and relations between them that are inherent in Web documents and applications. This document demonstrates the use of the OWL language to formalize a domain by defining classes and properties of those classes, define individuals and assert properties about them, and reason about these classes and individuals to the degree permitted by the formal semantics of the OWL language. The sections are organized to present an incremental definition of a set of classes, properties and individuals, beginning with the fundamentals and proceeding to more complex language components. http://www.w3.org/TR/2002/WD-owl-guide-20021104/ W3C releases OWL test cases The W3C Web Ontolgoy Working Group has published a set of test cases for the Web Ontology Language (OWL). Many of the test cases illustrate the correct usage of the Web Ontology Language (OWL), and the formal meaning of its constructs. Other test cases illustrate the resolution of issues considered by the working group. http://www.w3.org/TR/2002/WD-owl-test-20021024/#introduction DAML Query Language released The Joint US/EU ad hoc Agent Markup Language Committee has announced the initial release of the DAML Query Language (DQL). DQL provides a language and protocol for agent-to-agent query-answering dialogues using knowledge represented in DAML+OIL, potentially involving inference and remote knowledge bases. The current release consists of an abstract specification. Continuing work is expected to result in a normative external syntax and a fully defined specification of answer justifications. http://www.daml.org/2002/08/dql/ DAML Rules An increased emphasis on rules emerged at the DAML PI Meeting and a decision was made to more closely align the DAML Rules effort with the Rule Markup Language (RuleML) <http://www.dfki.uni-kl.de/ruleml/> initiative. Information summarizing ongoing work on DAML Rules (DAML-R) is now available at http://www.daml.org/rules/. DAML+OIL Time Ontology released A collaborative project, led by Jerry Hobbs, aims to develop a representative ontology of time that expresses temporal concepts and properties common to any formalization of time. For more information on this project see: http://www.cs.rochester.edu/~ferguson/daml/. As a part of this effort, the DAML+OIL time ontology is now available at: http://www.ai.sri.com/daml/ontologies/time/Time.daml DAML Article to appear in IEEE Distributed Systems Online An article, “DAML+OIL, an Ontology Language for the Semantic Web”, by Jim Hendler, Deborah McGuinness, Richard Fikes and Lynn Stein, is scheduled for publication on the IEEE Distributed Systems Online web site sometime in November: http://dsonline.computer.org/ DAML-S Version 0.7 released Version 0.7 of DAML-S (DARPA Agent Markup Language for Services) is available at http://www.daml.org/services/. DAML-S is a DAML+OIL-based Web service ontology, which supplies Web service providers with a core set of markup language constructs for describing the properties and capabilities of their Web services in unambiguous, computer-intepretable form. DAML-S also provides service requesters with semantic constructs to describe the functionality and constraints of services desired by a requester. Version 0.7 introduces the Grounding ontology, and also includes substantial refinements to the Profile and Process Model ontologies. In addition, a new example of a Profile-based (yellow-pages style) service taxonomy is presented, and the existing service examples have been made more complete. The new Grounding ontology ties DAML-S in with the Web Services Description Language (WSDL), an emerging, collaborative industry effort that is currently the focus of a W3C working group. As noted on the release home page, feedback is welcome from all interested parties, through the www-ws@w3.org email list. AFRL’s Commander-To-Database Query Mediator using DAML The Air Force Research Laboratory (AFRL) has developed a prototype application to apply military facility ontologies to answer high-level queries in support of Effects Based Operations. The “DAML Commander-To-Database Query Mediator” prototype demonstrates how ontologies expressed in DAML can be used to bridge an understanding gap between queries represented in two different, but related, domains and applications. The tool allows non intelligence analysts to access low-level military intelligence databases without having to know the low-level SQL search terminology. A web-based user interface was developed to allow users to formulate pseudo-natural language queries concerning the status of various military facility types in foreign nations. The high-level military facility classifications and ontology was developed based on a standardized classification of facilities enforced by the DIA (Defense Intelligence Agency). Likewise, the low-level intelligence data ontology was derived from a subset of the modernized integrated database (MIDB) schema. The actual mediation between these two ontologies was handled by placing DAML restrictions on various properties and classes from one ontology to the other. Moreover, the application itself, which handled the query mediation, processing, and results delivery, was developed with Java servlet technology and made use of the Jena API for DAML. This prototype development exercised the DAML lifecycle and demonstrates a potential military application of DAML. Several collaboration areas were identified at the recent DAML Principal Investigator meeting in Portland, OR, including integration with the SONAT experiment.” DAML at conferences Planning is underway for the 2nd International Semantic Web Conference (ISWC2003) to be held 20-23 October 2003 in Sanibel Island, Florida, with a strong representation from the DAML program. Upcoming deadlines include Workshop Proposals on December 16 and Papers on April 15. See http://iswc2003.semanticweb.org <http://iswc2003.semanticweb.org/> for more information. Archive of HotDAML Newsletters <http://www.daml.org/newsletters/> Subscription, Questions, Comments, Story Tips <mailto:newsletters@daml.org>
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