G. Cabri, L. Leonardi, and F. Zambonelli. Mobile agents coordination models for Internet applications. IEEE Computer, 33(2):82--89, Feb. 2000.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....news. Exchanging news is the only form of communication. A news item generated by an agent is overridden by a fresher item from the same agent even if no other agent has ever processed it. The communication model is generative in the sense that agents are temporally and referentially uncoupled [10], 11] In other words, a news recipient need not be known or even exist at the time a news item is published, nor does a news item need to explicitly identify its sender and receivers. However, as we shall see, referential coupling can easily be implemented by newscast applications if necessary. ....

Giacomo Cabri, Letizia Leonardi, and Franco Zambonelli, "Mobile-agent coordination models for Internet applications," IEEE Computer, vol. 33, no. 2, pp. 82--89, Feb. 2000.

....Typically, agent societies are build upon a dynamic set of decentralized tuple centres, according to the social aspects to be represented and enforced. This context oriented vision has been promoted also by other approaches, in particular focusing on mobility and its relationship with coordination [2, 25]. Part of the agent community (in particular FIPA groups) also criticizes the absence of a (high level) semantic for the (Linda like) coordination language used by tuple centre models. However, these coordination models have been ##### ######### ###### ########### ######## # # # # # #### ## ....

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile-agent coordination models for internet applications. IEEE Computer, 33(2):82--89, Feb. 2000.

....continuous network connections and only access a site once a network connection is available. These are the desire characteristics if an agent is to be successful in a changing environment such as WWW. However Mobile Agents lack standardization, security and appropriate programming languages [3]. 4. Intelligent Agents applications for Data Mining Information Retrieval from World Wide Web (WWW) In the late 90s, the Internet, intranet and WWW have caused an explosion in the amount of information available to people, the number of Internet sites are growing exponentially. The easy to use ....

G. Cabri, L. Leonardi & F. Zambonelli, "Mobile -- Agent Coordination Models For Internet Applications", IEEE Spectrum, February 2000.

....by extending the sharing also to non co located agents, providing also a more fine grained programming of the coordination infrastructure. A large number of coordination models for agents derives from the re adaptation of the Linda coordination language to a distributed multi agent environment [2, 1], in order to support the different behaviour of agents with respect to standard processes 5 . They offer some advantages such as the spatial and temporal uncoupling, and also provide a good model for knowledge sharing. Even if they are designed to meet agent requirements, the operations ....

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile-Agent Coordination Models for Internet Applications. IEEE Computer, 33(2), February 2000.

....overview The TuCSoN coordination model and infrastructure is based on the notion of (logic) tuple centre [20] which is a Linda tuple space [21] empowered with the ability to define its behaviour in response to communication events according to the specific coordination needs. It has been argued [22] that the openness and the wideness of the Internet scenario make it suitable to conceive the Internet as a multiplicity of independent environments (e.g. Internet nodes or administrative domain of nodes) and to design applications in terms of agents that explicitly locate and access resources in ....

Giacomo Cabri, Letizia Leonardi, and Franco Zambonelli, "Mobile-agent coordination models for internet applications", IEEE Computer, vol. 33, no. 2, pp. 82--89, Feb. 2000.

....and discovery based solutions [Bel 01a] The communication facility. It provides tools for communication and coordination between possibly mobile entities. When hosted in the same execution locality, agents interact via shared objects, such as blackboards and tuple spaces for tight cooperation [Cab 00] Otherwise, agents can exchange asynchronous messages delivered also in case of migration of the target entity. The migration facility. It supports the transport of one entity that requests to change its allocation. Entities capable of reallocation are represented by agents, which can move in ....

G. Cabri, L. Leonardi, and F. Zambonelli, "Mobile-agent Coordination Models for Internet Applications", IEEE Computer, Vol. 33, No. 2, Feb. 2000.

....information agents [19] The TuCSoN coordination model is based on the notion of (logic) tuple centre [18] which is a Linda tuple space [8] empowered with the ability to define its behaviour in response to communication events according to the specific coordination needs. It has been argued [1, 21, 22] that the openness and the wideness of the Internet scenario make it suitable to conceive the Internet as a multiplicity of independent environments (e.g. Internet nodes or administrative domain of nodes) and to design applications in terms of agents that explicitly locate and access resources in ....

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile-agent coordination models for internet applications. IEEE Computer, 33(2):82--89, February 2000.

No context found.

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile-agent coordination models for internet applications. IEEE Computer, 33(2):52--58, February 2000.

No context found.

Cabri, G., Leonardi, L., Zambonelli, F.: Mobile-Agent Coordination Models for Internet Applications. IEEE Computer, Vol. 33, No. 2, pp. 82-89, February 2000.

No context found.

G. Cabri, L. Leonardi, F. Zambonelli, "Mobile-Agent Coordination Models for Internet Applications ", IEEE Computer, 33(2):82-89, Feb. 2000.

No context found.

Cabri, G., Leonardi, L., Zambonelli, F.: Mobile-Agent Coordination Models for Internet Applications. IEEE Computer, Vol. 33, No. 2, pp. 82-89, February 2000.

No context found.

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile-agent coordination models for internet applications. IEEE Computer, 33(2):52--58, February 2000.

....Context A Figure 1. Mobility across local interaction contexts What is the interaction model to be actually exploited for modeling interaction in a context is not of primary influence. Interactions may occur via message passing and ACLs [5] via meetings [19] or via shared dataspaces [1]. What really matters from the software engineering perspective is the locality model enforced by local interaction spaces, which reflects at the level of application modeling a notion of context intrinsic in mobility. In fact, for the very fact of moving across the Internet, agents access ....

G. Cabri, L. Leonardi, F. Zambonelli, "Mobile-Agent Coordination Models for Internet Applications ", IEEE Computer, 33(2):82-89, Feb. 2000.

....i.e. interacting, communicating, and synchronizing both with other agents and with Internet resources. In particular: mobility at the Internet scale discourages the adoption of those coordination models relying on global communication abstractions and enforcing location transparency [Wal97, CabLZ00a]; administrators must have the capability of controlling and constraining the coordination activities of the agents that execute in their sites; agents should proceed with their execution and with their coordination activities accordingly to their own application specific needs, despite ....

.... and lookup of agents positions and names [MurP99] the intrinsic autonomy and dynamics of mobile agents clash with the strict coupling (in terms of synchronization of the activities and or necessity of sharing a common name space) usually enforced by global communication abstractions [CabLZ00a]; The suitable solution is to make agent coordination rely, whenever possible, on an infrastructure enforcing local and uncoupled interactions via a multiplicity of independent local coordination media. A coordination medium is a coordination service typically associated to an Internet node or ....

[Article contains additional citation context not shown here]

G. Cabri, L. Leonardi, F. Zambonelli, "Mobile-Agent Coordination Models for Internet Applications", IEEE Computer, 33(2):82-89, Feb. 2000.

....belonging to the same application or being foreign Internet agents. What is the interaction model to be actually exploited for modeling interactions in a context is not of primary influence. Interactions may occur via message passing and ACLs [4] via meetings [10] or via shared dataspaces [1]. What really matters, from the software engineering perspective, is the locality model enforced by local interaction spaces, which reflects at the level of application modeling a notion of context intrinsic in mobility. In fact, for the very fact of moving across the Internet, agents access ....

G. Cabri, L. Leonardi, F. Zambonelli, "Mobile-Agent Coordination Models for Internet Applications", IEEE Computer, 33(2):82-89, Feb. 2000.

....infrastructure. Mobile Agents for Information Integration 5 performance,price) capacity cc ,compression ratio , power kw, fuel system) luggage capacity) combined consumption,speed) Fig. 2. Fiat database (FIAT) The interaction between agents can occur by using several protocols. See [12] for a comparison among different kinds of coordination for Internet applications based on mobile agents; an approach that is gaining ground more and more is the one based on programmable tuple spaces [11] 2.2 Running Example Vehicle(name, length, width, height) Motor(cod m, type, compression ....

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile-agent coordination models for internet applications. IEEE Computer, 33(2):82--89, February 2000.

....or tuple spaces) each associated to an execution environment. These interaction spaces are in charge of mediating all coordination activities (both inter agent and agentenvironment ones) for the agent currently executing (whether virtually or actually) in the associated execution environment [3, 17]. Such an infrastructure naturally matches the network aware virtually mobile nature of Internet agents and enforces the principle of locality in interactions. Moreover, when agents can actually move at a world wide scale, relying only global inter agent interactions is not suitable, ....

.... virtually mobile nature of Internet agents and enforces the principle of locality in interactions. Moreover, when agents can actually move at a world wide scale, relying only global inter agent interactions is not suitable, requiring the introduction of complex communication middleware [3]. For the very fact that agents move onto different execution environments during their execution, and will exploit the associated local interaction spaces, they will access to different data, services, and will interact with different agents, depending on the environment. This form of ....

[Article contains additional citation context not shown here]

G. Cabri, L. Leonardi, F. Zambonelli, "Mobile-Agent Coordination Models for Internet Applications", IEEE Computer, Vol. 33, No. 2, pp. 82-89, Feb. 2000.

....and decentralised forms of control an issue. In particular, systems are likely to be composed of several heterogeneous subsystems managed by independent authorities, where heterogeneity refers both to their design and implementation [9, 16] In such a context, the ability to coordinate the agents [1] coupled with the possibility to control the operations they perform is important, so we argue that coordination and access control should be regarded as tightly connected issues [3, 4, 14] Furthermore, the openness and the distribution of the environment make traditional centralised solutions ....

Cabri, G., Leonardi, L., Zambonelli, F., Mobile-Agent Coordination Models for Internet Applications. IEEE Computer, 33(2): 52-58, Feb.2000.

....or tuple spaces) each associated to an execution environment. These interaction spaces are in charge of mediating all coordination activities (both inter agent and agent environment ones) for the agent currently executing (whether logically or physically) in the associated execution environment [OmiZ99, CabLZ00a]. On the one hand, such an infrastructures naturally matches the network aware logically mobile nature of Internet agents and enforces the principle of locality in interactions. On the other hand when agents can physically move at a world wide scale, relying only global inter agent ....

....agents and enforces the principle of locality in interactions. On the other hand when agents can physically move at a world wide scale, relying only global inter agent interactions is not suitable, requiring the introduction of complex communication middleware and or forcing odd design choices [CabLZ00a]. What is Context Dependency For the very fact that agents move onto different execution environments during their execution, and will exploit the associated local interaction spaces, they will access to different data, services, and will interact with different agents, depending on the ....

[Article contains additional citation context not shown here]

G. Cabri, L. Leonardi, F. Zambonelli, "MobileAgent Coordination Models for Internet Applications ", IEEE Computer, Vol. 33, No. 2, pp. 82-89, Feb. 2000.

.... hosting execution environments (agent environment coordination) With regard to physical mobility, relying only on traditional coordination models (i.e. peer to peer and client server) for global interactions between agents cannot always be feasible if agents can freely move at a worldwide scale [CabLZ00]. With regard to logical mobility, the fact that an agent executes and interacts on different execution environments during its life has several implications on application design. On the one hand, one must take into account that each environment has its specific characteristics and security ....

.... agent environment coordination can effectively rely on an infrastructure based on a multiplicity of independent interactions spaces (whether meeting points or tuple spaces) each associated to an execution environment and in charge of mediating both interagent and agent environment interactions [OmiZ99, CabLZ00]. This makes it possible for agents to coordinate, via the mediation of the local interaction space, without worrying about each other s position and name. In addition, by enhancing interaction spaces with the capability of dynamically programming their behaviors, one can make interaction spaces ....

G. Cabri, L. Leonardi, F. Zambonelli, "Mobile-Agent Coordination Models for Internet Applications ", IEEE Computer, Vol. 33, No. 2, pp. 82-89, Feb. 2000.

No context found.

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile agents coordination models for Internet applications. IEEE Computer, 33(2):82--89, Feb. 2000.

No context found.

Cabri, G., Leonardi, L., and Zambonelli, F., Mobile-agent coordination models for internet applications. IEEE Computer, 33, 2 (2000), 82-89.

No context found.

Giacomo Cabri, Letizia Leonardi, and Franco Zambonelli. Mobile-Agent Coordination Models for Internet Applications. IEEE Computer, 33(2):82--89, February 2000.

No context found.

Giacomo Cabri, Letizia Leonardi, and Franco Zambonelli. Mobile-Agent Coordination Models for Internet Applications. IEEE Computer, 33(2):82--89, February 2000.

No context found.

G. Cabri, L. Leonardi, and F. Zambonelli. Mobile-Agent Coordination Models for Internet Applications. IEEE Computer, 33(2):82--89, February 2000.

First 50 documents

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC