Browsing by Author "Tolia, Sovrin"
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ItemITTALKS: A Case Study in the Semantic Web and DAML(2001-07-12) Cost, R. Scott; Finin, Tim; Joshi, Anupam; Peng, Yun; Nicholas, Charles; Soboroff, Ian; Chen, Harry; Kagal, Lalana; Perich, Filip; Zou, Youyong; Tolia, SovrinEffective 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 SemanticWeb concepts andDAMLextend its ability to provide an intelligent online service to both the human community and the agents assisting them. ItemMagicWeaver: An Agent-Based Simulation Framework for Wireless Sensor Networks(2002-08-01) Tolia, Sovrin; Finin, Tim; Joshi, AnupamDistributed 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. ItemSteps Towards Creating a Context-Aware Agent System(2001-09-27) Chen, Harry; Tolia, SovrinThe ability to reason from context is crucial to human communication. It allows a large amount of implicit information to be conveyed with a small amount of explicit description. If the same kind of ability can be provided to software agents, then these agents, even with little built-in knowledge, can adjust their behaviors according to the available implicit information in the environment. This document describes our research in prototyping the CoolAgent Recommendation system (CoolAgent RS). This context- aware software agent system demonstrates the ability to allow contextual information to be freely distributed among agents so that the meaning of that information can be shared and understood. It provides a flexible infrastructure for agents to capture heterogeneous contextual information in the physical world, and represent that uniformly for machine- processes. It also allows agents to negotiate with other agents in the vicinity for contextual information that is not directly accessible through sensing.