Keith Kotay and David Kotz. Transportable agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....www.comsoc.org pubs surveys IEEE Communications Surveys . http: www.comsoc.org pubs surveys . Fourth Quarter 1998 . Vol. 1 No. 1 IEEE Communications Surveys . http: www.comsoc.org pubs surveys . Fourth Quarter 1998 . Vol. 1 No. 1 3 [13] Examples of the former approach include AgentTCL [14, 15] and Telescript [16] and the latter, Aglets [17] To make use of mobile agents, a system has to incorporate a mobility framework. The framework has to provide facilities that support all of the agent models, including the navigation model. For the life cycle model, we need services to ....

....In our examples, we describe netlets providing network modeling and performance measurement services. RESEARCH ACTIVITY There are a growing number of centers conducting research on mobile agents. Pioneers in providing agent frameworks, such as GeneralMagic (Telescript and newer Odyssey) [15] and Dartmouth College (D Agents a.k.a. AgentTCL) 14] have been joined, and sometimes surpassed, by IBM (Aglets) 17] Mitsubishi (Concordia) ObjectSpace (Voyager) and others. Research flourishes in many application areas. In spite of being identified as one of the primary application areas of ....

Kotay, K. and Kotz, D., Transportable Agents. In Yannis Labrou and Tim Finin, editors, Proc. of the CIKM Workshop on Intelligent Information Agents, Third Int'l Conf. on Information and Knowledge Management (CIKM `94), Gaithersburg, Maryland, Dec. 1994.

....resources for information that is relevant to the user s current needs. These resources are often distributed across a network and can contain tremendous quantities of data. One of the paradigms that has been suggested for allowing efficient access to such resources is transportable agents [KK94] the agent is sent to the machine that maintains the information resource; the agent executes on this remote machine and then returns its results to the local machine. We have implemented a transportable agent system. The agents are written in the Tool Command Language (Tcl) a high level ....

Keith Kotay and David Kotz. Transportable agents. In CIKM Workshop on Intelligent Information Agents (held in conjunction with the Third International Conference on Information and Knowledge Managament), Gaithersburg, Maryland, December 1994. National Institute of Standards and Technology.

....is not new. For example, Javascript and Java Applets allow servers to ship code to browsers, Smart Clients [35] allows servers to ship code to caches, Active Caches [5] allow servers to ship code to proxies, Active Networks [30] allow network infrastructures to be proPage 1 grammed, and agents [12, 20, 25] allow clients and servers to inject code into a distributed infrastructure. This paper makes three contributions towards understanding how to use mobile extensions to support disconnected operation for distributed services. First, our mobile extension system provides a novel combination of three ....

K. Kotay and D. Kotz. Transportable Agents. In Proceedings of the CIKM Workshop on Intelligent Information Agents, Dec 1994.

....in which expectation agents are the programs. Agents are authored and maintained on development computers and transported to user computers to execute remotely and report data back to developers. Several researchers have begun to look at sophisticated techniques for achieving agent mobility [13][15][25] Rus and colleagues [25] describe an approach in which agents sense network status and navigate adaptively based on reactive plans. There are also a number of commercially (and freely) available mobile agent platforms, e.g. ObjectSpace Voyager TM [22] of which Telescript TM [35] ....

K. Kotay and D. Kotz. "Transportable Agents". In Proceedings of the Workshop on Intelligent Information Agents, 1994.

....applications since they can physically move from machine and machine and person to person as each step in the task is completed. The router carries data relevant to the task along with it and performs arbitrarily complex processing when deciding which step to perform next. Kotay and Kotz [KK94] describe a prototype system that was implemented as a starting point for future research. Transportable agents are written in a simple scripting language that includes most of the features of AWK as well as traditional imperative language features such as if then and while [KK94] An agent ....

....Kotay and Kotz [KK94] describe a prototype system that was implemented as a starting point for future research. Transportable agents are written in a simple scripting language that includes most of the features of AWK as well as traditional imperative language features such as if then and while [KK94]. An agent migrates with the moveto command. The moveto command captures the internal state of the agent and transports this state to a new machine. The agent continues execution on the new machine from the statement after the moveto. Three transport mechanisms were tested electronic mail, UNIX ....

[Article contains additional citation context not shown here]

Keith Kotay and David Kotz. Transportable agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....programming language as a result of its standard implementation that includes a rich class hierarchy for communication in TCP IP networks and a network management infrastructure. Java incorporates facilities to implement innovative management techniques based on mobile code (Kotay and Klotz, [6]; also [8] Using this technology and these techniques we can address many interoperability issues and work towards plug and play networks by applying mobile agents that can take care of many aspects of configuring and maintaining networks in an autonomous fashion. For example, code distribution ....

Kotay, K. and Kotz, D., Transportable Agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....must be protected from malicious agents at the same time that agents are protected from inappropriate observation. These issues have been addressed in the context of transportable agents. A transportable agent is a program that can migrate from machine to machine in a heterogeneous network [KK94] The program chooses when and where to migrate. It can suspend its execution at an arbitrary point, transport to a new machine and resume execution on the new machine. Transportable agents were developed as the next step in the remote procedure call [BN84] remote evaluation [SG90] and SUPRA RPC ....

Keith Kotay and David Kotz. Transportable agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....in which expectation agents are the programs. Agents are authored and maintained on development computers and transported to user computers to execute remotely and report data back to developers. Several researchers have begun to look at sophisticated techniques for achieving agent mobility [12][14][24] Rus and colleagues [24] describe an approach in which agents sense network status and navigate adaptively based on reactive plans. There are also a number of commercially (and freely) available mobile agent platforms [21] of which Telescript [33] introduced by General Magic, Inc. in 1994, ....

K. Kotay and D. Kotz. Transportable Agents. In Proceedings of the Workshop on Intelligent Information Agents, 1994.

....well beyond the capability of most academic institutions to acquire. Other transportable agent systems are being developed for research purposes. At Dartmouth College, Keith Kotay and David Kotz have created an agent system that supports the movement of agents from one location to another [KK94]. This agent system does not, however, support the ability of agents to replicate themselves, nor does it implement message passing between agents. Furthermore, the transport mechanism used was rsh (remote shell) which is not the most efficient or secure implementation available, and the ....

....intelligent agent should be portable across platforms, it should be able to choose when and where to transport itself, it should be able replicate itself, and it should be able to communicate with other agents to exchange information. The system prototyped by Keith Kotay and David Kotz [KK94] has successfully exhibited several of these properties. Specifically, the system was portable across numerous different hardware platforms and supported agents choosing when and where to migrate. It did not support agent replication, nor did it support inter agent communications. Concurrent with ....

[Article contains additional citation context not shown here]

Kotay, K., and Kotz, D. "Transportable Agents." CIKM Workshop on Intelligent Information Agents, Conference Proceedings (Dec. 1994.)

.... spread themselves through a virtual network 13 ; although WAVE is syntactically awkward and demands a highly recursive programming style, it has been used effectively in several applications, including distributed simulation, network management, and distributed database retrieval [Sap96] KK94] implements a simple mobile agent system in which the agents are written in a scripting language similar to AWK and migrate from machine to machine with a moveto instruction; this system was the forerunner to Agent Tcl here at Dartmouth. 3.3 Safe languages Finally, there are several interpreted ....

....rapidly develop even large scale distributed applications. The architecture of Agent Tcl is shown in Figure 5.1. The architecture builds on the server model of Telescript [Whi94] the multiple languages of Ara [Pei96] and the transport mechanisms of two predecessor systems at Dartmouth [Har95, KK94] The architecture has five levels. The lowest level is an API for the available transport mechanisms. The second level is a server that runs at each network site. The server performs the following tasks: ffl Status and administration. The server keeps track of the agents that are running on its ....

Keith Kotay and David Kotz. Transportable agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....et al. 10] A mobile agent is additionally characterized by a navigation model. Mobile agents can be implemented using one of two fundamental technologies: mobile code ( 11] Baldi et al. 12] or remote objects (Vinoski, 13] Examples of the former approach include AgentTCL (Gray [14] [15]) and Telescript (White, 16] and the latter Aglets (Lange, 17] To make use of mobile agents, a system has to incorporate a mobility framework. The framework has to provide facilities that support all of the agent models, including the navigation model. For the life cycle model, we need ....

....our examples, we described netlets providing network modeling and performance measurement services. IV Research activity There are a growing number of centers conducting research on mobile agents. Such pioneers in providing agent frameworks as GeneralMagic (Telescript and newer Odyssey; White, [15]) and Dartmouth College (D Agents a.k.a. AgentTCL; Gray, 14] have been joined, and sometimes surpassed, by IBM (Aglets; Lange et al. 17] Mitsubishi (Concordia) ObjectSpace (Voyager) and others. Research flourishes in many application areas. In spite of being identified as one of the ....

Kotay, K. and Kotz, D., Transportable Agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....with the legacy systems is network computing based on the Java technology (Gosling et al. 4] We refer to Java as a technology rather than only as another programming language. Java incorporates facilities to implement innovative management techniques based on mobile code (Kotay and Klotz, [6]; also [8] With these techniques we can harness many interoperability issues and work toward plug and play networks by applying mobile agents that can take care of many aspects of configuring and maintaining networks in an autonomous way. Code distribution and extensibility techniques keep ....

Kotay, K. and Kotz, D., Transportable Agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....merely as another programming language as a result of its standard implementation that includes a rich class hierarchy for communication in TCP IP networks and a network management infrastructure. Java incorporates facilities to implement innovative management techniques based on mobile code [5]. Using this technology and these techniques it is possible to address many interoperability issues and work towards plug and play networks by applying autonomous mobile agents that can take care of many aspects of configuring and maintaining networks. For example, code distribution and ....

Kotay, K. and Kotz, D., Transportable Agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....2.1 Planned architecture The planned architecture for Agent Tcl is shown in Figure 1. The architecture builds on the server model of Telescript [Whi94] the multiple languages of ARA [Pei96] and Dixie [Gai94] and the transport mechanisms of two predecessor systems at Dartmouth [Har95, KK94] The architecture has four levels. The lowest level is an API for the available transport mechanisms. The second level is a server that runs at each network site to which agents can be sent. The server performs the following tasks: 5 Security State capture Interpreter Server API TCP IP ....

Keith Kotay and David Kotz. Transportable agents. In Yannis Labrou and Tim Finin, editors, Proceedings of the CIKM Workshop on Intelligent Information Agents, Third International Conference on Information and Knowledge Management (CIKM 94), Gaithersburg, Maryland, December 1994.

....[SG90] introduce the concept of Remote Evaluation (REV) in which servers are viewed as programmable processors. The Telescript technology introduced by General Magic, Inc. in 1994 was the first commercial description of transportable agents [Whi94] Prototypes of transportable agent systems exist [KK94, Gra95, Gra96, JRS95, TLKC95]. Telescript has been primarily used in connection with Personal Digital Assistants, network management, active email, electronic commerce, and business process management. The details of how Telescript agents jump between mobile hosts and handle disconnected operations are unclear. The Mobile ....

K. Kotay and D. Kotz, Transportable agents, in Workshop on Intelligent Information Agents,

....the concept of Remote Evaluation (REV) in which servers are viewed as programmable processors. The Telescript technology introduced by General Magic, Inc. in 1994 was the first commercial description of transportable agents [Whi94] Prototypes of transportable agent systems are described in [KK94, Gra95, Gra96, JRS95]. In the software agents literature, much time and effort has been devoted to designing task directed agents and to the cognitive aspects of agents. Agents are called knowbots by [KC86] softbots by [EW94] sodabots by [KSC94] software agents by [GK94] personal assistants by [Mae94, MCF94] and ....

K. Kotay and D. Kotz, Transportable agents, in Workshop on Intelligent Information Agents, December 1994.

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K.D. Kotay, D. Kotz, "Transportable Agents", Proc. of the CIKM-49, J.J.A. Workshop, Dec, 1994, Gathesburg

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