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Publications
| Sovrin Tolia |
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| Semantic Query, Programming Languages, RDF, Meta-Data,
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| HP Labs Technical Report |
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Context Spaces aim to provide a new class of document management
services in which storage, organization and retrieval of information
is based on semantically rich and active meta-data. It enhances the
access to existing document resources by making it more proactive,
mobile and context-aware. We have designed a new language, Penelope,
to realize Context Spaces. Penelope defines the basic programming
language concepts, including primitive data types as objects. It uses
the message passing model for expressing operations over these
objects. The current implementation of Penelope is based on the
Resource Description Framework (RDF) data model and the Schema
specification. The property centric approach and the platform
independence provided by RDF makes Penelope suitable for building
distributed components. This work on Penelope demonstrates the
benefits of expressing data and code in a single unifying language.
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| Sovrin Tolia, Tim Finin and Anupam Joshi |
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| Sensor Networks,
Agents |
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| Workshop on Ubiquitous Agents on embedded, wearable, and mobile devices at Bologna,Italy |
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Distributed sensor networks have been the focus of considerable research during the past few years. Current research on wireless sensor networks can involve a number of issues, including hardware constraints, communication and routing issues, data management problems, and software engineering principles. To clearly understand their characteristics, we require development environments to design them, explore architectural alternatives, and simulate their performance. MagicWeaver is an agent-based simulation framework for wireless sensor networks. It provides abstract models for sensor tasking and communication, device constraints, network topologies and the physical environment. It also supports a special class of applications characterized by streaming data-feeds. MagicWeaver illustrates ways in which agents paradigm extends it`s flexibility to incorporate teamwork and coordination between sensor agents. In this paper we discuss MagicWeaver`s underlying design rationale and provide it`s current implementation status. We also report on results obtained while performing scalability tests using the JADE agent platform.
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| Sovrin Tolia, Deepali Khushraj, Tim Finin |
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| Open Environments, Semantic Web, Agentcities,
Agents |
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| 1st International Workshop on "Challenges in Open Agent Systems" to be held at AAMAS'02 in Bologna, Italy in July 2002 |
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Agentcities is a worldwide network of agent platforms aimed at
providing an open, heterogeneous and scalable infrastructure for
service provisioning. To realize this vision, a host of research
issues need to be tackled. We believe that the application of
semantic web concepts, for service description, service composition
and service availability, are some of the key ones for which feasible
solutions need to be developed. To gain insights into the additional
issues posed by such environments, we are building an event
information service for ITTalks. ITTalks is a web-based system for
automatic and intelligent notification of information technology
talks, seminars and colloquia. It illustrates some of the ways in
which DAML+OIL extends its ability to provide intelligent services to
humans and the agents assisting them. In the context of the
Agentcities initiative, our work encompasses building service
description, composition and invocation ontologies using DAML-S. We
are extending the JADE directory facilitator to provide a more robust
rule-based partial search mechanism based on DAML-S service
descriptions.
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| Harry Chen, Sovrin Tolia, Craig Sayers, Tim Finin and Anupam Joshi |
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| Context-Aware Computing,
Agents |
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| First GSFC/JPL Workshop on Radical Agent
Concepts, NASA Goddard Space Flight Center, Greenbelt, MD,
USA |
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Sharing ontology, sensing context and reasoning are crucial
to the realization of context-aware software agents. This paper de-
scribes our effort on using Resource Description Framework (RDF) and
the Prolog Forward Chaining (Pfc) system to provide support for ontol-
ogy sharing and reasoning in the CoolAgent Recommendation System
(CoolAgent RS), a context-aware multi-agent system. This paper
also describes the implementation of the CoolAgent RS document and
cuisine recommendation services that provide tailored services by ex-
ploiting user's context.
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| R. Scott Cost, Tim Finin, Anupam Joshi,
Yun Peng, Charles Nicholas, Harry Chen, Lalana Kagal, Filip
Perich, Youyong Zou, Sovrin Tolia and Ian Soboroff |
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| Semantic Web |
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| International Semantic Web Working Symposium (SWWS) |
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Effective use of the vast quantity of information now
available on the web will require the use of ``Semantic
Web'' markup languages such as the DARPA Agent Markup
Language (DAML). Such languages will enable the automated
gathering and processing of much information that is
currently available but insufficiently
utilized. Effectively, such languages will facilitate the
integration of multi-agent systems with the existing
information infrastructure. As part of our exploration of
Semantic Web technology, and DAML in particular, we have
constructed ITTALKS, a web-based system for automatic and
intelligent notification of information technology talks. In
this paper, we describe the ITTALKS system, and discuss the
numerous ways in which the use of Semantic Web concepts and
DAML extend its ability to provide an intelligent online
service to both the human community and the agents assisting
them.
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| Filip Perich, R. Scott Cost, Tim Finin, Anupam Joshi, Yun Peng, Charles Nicholas, Harry Chen, Lalana Kagal, Youyong Zou, Sovrin Tolia |
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| Semantic Web |
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| Workshop on Engineering Societies in the Agents' World, Prague. |
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Effective use of the vast quantity of information now
available on the web will require the use of “semantic
web” markup languages such as the DARPA Agents Markup
Language (DAML). Such languages will enable the automated
gathering and processing of much information that is
currently available but insufficiently utilized. As part of
our exploration of semantic web technology, and DAML in
particular, we have constructed ITTALKS, a web-based system
for automatic and intelligent notification of information
technology talks. In this paper, we describe the ITTALKS
system, and discuss the numerous ways in which the use of
semantic web concepts and DAML extend its ability to provide
an intelligent online service to both the human community
and the agents assisting them.
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