HotDAML Newsletter - Issue 9

From: John Flynn ([email protected])
Date: 11/08/02

HotDAML Newsletter
Keeping you up to speed on happenings in the world of DAML <>

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:

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

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.

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.

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) <>  initiative.
Information summarizing ongoing work on DAML Rules (DAML-R) is now available

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: As a part of this
effort, the DAML+OIL time ontology is now available at:

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

DAML-S Version 0.7 released

Version 0.7 of DAML-S (DARPA Agent Markup Language for Services) is
available at 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
[email protected] 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 <>  for more

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