A survey on context‐aware web service systems

Truong, Hong Linh; Dustdar, Schahram

doi:10.1108/17440080910947295

Cited by 174 publications

(86 citation statements)

References 42 publications

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“…This means that static (e.g., services description available in Service Level Agreements -SLAs) or runtime (e.g., the time instant a service is requested or replies, or the expected resources usage) information can be retrieved using knowledge given by ESB. Consequently, having access to the ESB provides knowledge on the set of generic services running at any time t. We refer to this information as context-awareness of the considered SOA; note that we do not require information on the user context, contrary to what is typically done in the state-of-the-art on context-awareness [16], [17]. We can exploit this information to define more precisely the boundaries between normal and anomalous behavior of the SOA.…”

Section: Considering Context-awarenessmentioning

confidence: 99%

“…This is not surprising since most of the systems include these layers: building solutions which fetch data from these layers allow building frameworks that fit in a very wide range of contexts. Regarding context-awareness, as highlighted in [16], in service-oriented architectures it usually refers to knowledge of the user environment to improve the performances of web services. For example, the Akogrimo project [17] aims at supporting mobile users to access data, knowledge, and computational services on the Grid focusing on user-context (such as user location and environmental information).…”

Section: State Of the Art And Comparison With Other Solutionsmentioning

confidence: 99%

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Context-Awareness to Improve Anomaly Detection in Dynamic Service Oriented Architectures

Zoppi

Ceccarelli

Bondavalli

2016

Lecture Notes in Computer Science

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Abstract. Revealing anomalies to support error detection in softwareintensive systems is a promising approach when traditional detection mechanisms are considered inadequate or not applicable. The core of anomaly detection lies in the definition of the expected behavior of the observed system. Unfortunately, the behavior of complex and dynamic systems is particularly difficult to understand. To improve the accuracy of anomaly detection in such systems, in this paper we present a contextaware anomaly detection framework which acquires information on the running services to calibrate the anomaly detection. To cope with system dynamicity, our framework avoids instrumenting probes into the application layer of the observed system monitoring multiple underlying layers instead. Experimental evaluation shows that the detection accuracy is increased considerably through context-awareness and multiple layers monitoring. Results are compared to state-of-the-art anomaly detectors exercised in demanding more static contexts.

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Section: Considering Context-awarenessmentioning

confidence: 99%

Section: State Of the Art And Comparison With Other Solutionsmentioning

confidence: 99%

Context-Awareness to Improve Anomaly Detection in Dynamic Service Oriented Architectures

Zoppi

Ceccarelli

Bondavalli

2016

Lecture Notes in Computer Science

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“…However, most context-aware systems are closed, composed of highly coupled constituents, and generated ad-hoc for a specific domain [6,54]. The same problem occurs when designing a dialog system.…”

Section: Introductionmentioning

confidence: 98%

“…Several authors [31,35,54] have highlighted the importance of standardizing and sharing a common base for context sensitivity and web services systems. However, most context-aware systems are closed, composed of highly coupled constituents, and generated ad-hoc for a specific domain [6,54].…”

Section: Introductionmentioning

confidence: 99%

Bringing context-aware access to the web through spoken interaction

2012

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The web has become the largest repository of multimedia information and its convergence with telecommunications is now bringing the benefits of web technology to handheld devices. To optimize data access using these devices and provide services which meet the user needs through intelligent information retrieval, the system must sense and interpret the user environment and the communication context. In addition, natural spoken conversation with handheld devices makes possible the use of these applications in environments in which the use of GUI interfaces is not effective, provides a more natural human-computer interaction, and facilitates access to the web for people with visual or motor disabilities, allowing their integration and the elimination of barriers to Internet access. In this paper, we present an architecture for the design of context-aware systems that use speech to access web services. Our contribution focuses specifically on the use of context information to improve the effectiveness of providing web services by using a spoken dialog system for the user-system interaction. We also describe an application of our proposal to develop a context-aware railway information system, and provide a detailed evaluation of the influence of the context information in the quality of the services that are supplied.

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“…Context information includes any additional information, e.g. a consumer's name, current location and address, type of client device and so on, which can be used to improve the behavior of a service in a situation [3], [4], [5], [6]. Without such additional information, the service would be operable as normal but with context information, which is arguable that the service can operate better or more appropriately [7], [8], [9], [10].…”

mentioning

confidence: 99%

A Novel Process Network Model for Interacting Context-Aware Web Services

Zhang

Liu

Abraham

2013

IEEE Trans. Serv. Comput.

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Abstract-Context-aware web services have been attracting significant attention as an important approach for improving the usability of web services. In this paper, we explore a novel approach to model dynamic behaviors of interacting context-aware web services, aiming to effectively process and take advantage of contexts and realize behavior adaptation of web services and further to facilitate the development of context-aware application of web services. We present an interaction model of context-aware web services based on Context-aware Process Network (CAPN), which is a dataflow and channel based model of cooperative computation. CAPN is extended to context-aware web service network by introducing a kind of sensor processes, which is used to catch contextual data from external environment. Through modeling the register link's behaviors, we present how a web service can respond to its context changes dynamically. The formal behavior semantics of our model is described by Calculus of Communicating Systems (CCS) process algebra. The behavior adaptation and context-awareness in our model are discussed. A XML (eXtensible Markup Language) formatted service behavior description language named BML4WS is designed to describe behaviors and behavior adaptation of interacting context-aware web services. Finally, an application case is demonstrated to illustrate the proposed model how to adapt context changes and describe service behaviours and their changes.

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A survey on context‐aware web service systems

Cited by 174 publications

References 42 publications

Context-Awareness to Improve Anomaly Detection in Dynamic Service Oriented Architectures

Context-Awareness to Improve Anomaly Detection in Dynamic Service Oriented Architectures

Bringing context-aware access to the web through spoken interaction

A Novel Process Network Model for Interacting Context-Aware Web Services

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