Supporting Context-Aware Interaction in Dynamic Multi-agent Systems

Julien, Christine; Roman, Gruia-Catalin

doi:10.1007/978-3-540-32259-7_9

Cited by 7 publications

(7 citation statements)

References 23 publications

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“…For example, LIME [14] makes the tuplespaces on any given node accessible to components on connected nodes. EgoSpaces [9] allows application components to specify exactly from which nodes tuples must be gathered using "views". A view declaratively describes a set of tuplespaces on remote nodes, by specifying a constraint on the location of the nodes.…”

Section: State Of the Artmentioning

confidence: 99%

Middleware for protocol-based coordination in dynamic networks

Schelfthout

Weyns

Holvoet

2005

Proceedings of the 3rd International Workshop on Middleware for Pervasive and Ad-Hoc Computing - MPAC '05

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Pervasive and ad hoc computing applications are frequently deployed in dynamic networks. Due to mobility of the computing nodes, their unreliability, or a limited communication range, at any time a node may enter or leave an interaction between a group of application components. Middleware approaches have been proposed to deal with these dynamics, by supporting the dissemination (or gathering) of information in dynamic networks. In our experience however, applications frequently need to execute a complete protocol to coordinate. Existing middleware can then be used as a discovery mechanism, but offers no support for handling the protocol itself. This paper presents a middleware model that enables an easier implementation of distributed protocols that need to take into account the continuously changing context in the dynamic network. It uses roles as a first order abstraction, handles the distributed instantiation of roles in an interaction session, and maintains the session as nodes in the mobile network move. We describe our experience with applying the middleware in a case study on a system of automatic guided vehicles.

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Section: State Of the Artmentioning

confidence: 99%

Middleware for protocol-based coordination in dynamic networks

Schelfthout

Weyns

Holvoet

2005

Proceedings of the 3rd International Workshop on Middleware for Pervasive and Ad-Hoc Computing - MPAC '05

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show abstract

“…For example, LIME [13] makes the tuplespaces on any given node accessible to components on connected nodes. EgoSpaces [9] allows application components to specify exactly from which nodes tuples must be gathered using "views". A view declaratively describes a set of tuplespaces on remote nodes, by specifying a constraint on the location of the nodes.…”

Section: State Of the Artmentioning

confidence: 99%

Coordination middleware for decentralized applications in dynamic networks

Schelfthout

Holvoet

2005

Proceedings of the 2nd International Doctoral Symposium on Middleware - DSM '05

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The Ph.D. work presented in this paper describes novel middleware abstractions for the support of decentralized applications in dynamic networks. Decentralized applications are characterized by the absence of an application component that has global control; a network is dynamic if its composition changes frequently and unexpectedly over time. In such a domain, application components are necessarily spread over the network nodes and need to coordinate among each other to achieve the application's functionality. The goal of the Ph.D. research is to support this coordination by suitable middleware abstractions. We describe two prototypes that were built with this goal in mind. First, a middleware supporting views, abstractions for representing and maintaining context information in a mobile ad hoc network is presented. A second middleware, that enables protocol-based interaction in mobile networks by supporting roles as a first order abstraction, is described. The application of this second middleware in a real world case study of automatic guided vehicle control is presented, showing its usefulness. Ongoing and further research in this area is discussed.

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“…To provide such an abstraction of the ad hoc network, we use the Source Initiated Context Construction (SICC) protocol and its network abstraction [23], [27], [39]. SICC provides an abstraction of the network as a tree that contains only those hosts that are within a specified distance from the reference host, where the distance can be calculated via an applicationspecified metric.…”

Section: The View Conceptmentioning

confidence: 99%

“…3) Defining Network Metrics: To provide network constraints, we use the SICC protocol [27], [39] to construct a subnet of the ad hoc network based on network properties.…”

Section: A Supporting Packagesmentioning

confidence: 99%

EgoSpaces: facilitating rapid development of context-aware mobile applications

Julien

Roman

2006

IIEEE Trans. Software Eng.

120

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Abstract-Today's mobile applications require constant adaptation to their changing environments, or contexts. Technological advancements have increased the pervasiveness of mobile computing devices such as laptops, handhelds, and embedded sensors. The sheer amount of context information available for adaptation places a heightened burden on application developers as they must manage and utilize vast amounts of data from diverse sources. Facilitating programming in this datarich environment requires a middleware that provides context information to applications in an abstract form. In this paper, we demonstrate the feasibility of such a middleware that allows programmers to focus on high-level interactions among programs and to employ declarative abstract specifications of context in settings that exhibit transient interactions with opportunistically encountered components. We also discuss the novel context-aware abstractions the middleware provides and the programming knowledge necessary to write applications using our middleware. Finally, we provide examples demonstrating the flexibility of the infrastructure and its ability to support differing tasks from a wide variety of application domains.

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Supporting Context-Aware Interaction in Dynamic Multi-agent Systems

Cited by 7 publications

References 23 publications

Middleware for protocol-based coordination in dynamic networks

Middleware for protocol-based coordination in dynamic networks

Coordination middleware for decentralized applications in dynamic networks

EgoSpaces: facilitating rapid development of context-aware mobile applications

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