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Existing Web API search engines allow for only category-based browsing and keyword or tag-based searches for RESTful services without offering the capability of discovering and composing real-world RESTful services from the viewpoint of application developers. Therefore, we propose a novel approach, referred to as TAD (Transformation-Annotation-Discovery), to address the above issue. TAD firstly transforms...
This paper compares congestion controls of Multi-Path TCP (MPTCP) from a view point of Quality of Experience for Web services (Web-QoE) under heterogeneous environment; it assesses Web-QoE by experiments with subjects. The authors treat the four controls (LIA, OLIA, BALIA, WVEGAS) and evaluate Web-QoE by using Web usability. In addition to QoE, they also measure QoS and fairness. Their experiments...
This paper studies appropriate values of EDCA parameters of the author's wireless LAN base station based on Quality of Experience (QoE) for Web Services by experiments with subjects. The base station reduces the traffic of a Web service without degradation of QoE; it utilizes EDCA as QoS control. However, appropriate EDCA parameter value have never been studied. This paper evaluates QoE and measures...
This paper sketches a service-oriented and hierarchical queuing mechanism designed to manage radio buffers while delivering web services. The goal is avoid buffer overflow implementing a three-level queuing mechanism. The first level is the message queue which stores messages from user-facing services. At the second level, the messages are fragmented into IP packets which are stored in the packet...
The usage of the service selection approaches across different dynamic service provisioning environments has increased the challenges associated with an effective method that can be used to select a relevant service. The use of service selection approach should depend on certain factors. In order to address this challenge, the literature analysis is conducted on various service selection approaches...
Quality of Service (QoS), applied in particular to Web Services, is an area of increasing interest. One approach to deal with QoS issues is the identification of quality characteristics, usually documented in quality models. Geospatial Web Services are standardized service interfaces which facilitate the processing and exchange of distributed geographic information. These services represent the technological...
Geospatial web service of agricultural information has a wide variety of consumers. An operational agricultural service will receive considerable requests and process a huge amount of datasets each day. To ensure the service quality, many strategies have to be taken during developing and deploying agricultural information services. This paper presents a set of methods to build robust geospatial web...
The automatic composition of Web Services has been explored in the literature from different standpoints. It aims to create an execution plan for the flow of Web Services based on requests made and sent by the client, by following the stages necessary for the generation of composite services and then carrying out the execution of the workflow that has been designed. However, no research studies have...
With the advent of Web services, service interoperability has always been an active research issue. In recent years, many approaches have been proposed. However, how to achieve fast composition and guarantee correct and executable composite service remains an open issue. For this problem, this paper presents a three-phase framework for accurate and efficient service interoperability. Since service...
The rapid development of cloud computing has resulted in the emergence of numerous web services on the Internet. Selecting a suitable cloud service is becoming a major problem for users especially non-professionals. Quality of Service (QoS) is considered to be the criterion for judging web services. There are several Collaborative Filtering (CF)-based QoS prediction methods proposed in recent years...
Service oriented systems are highly dynamic systems composed of several web services. One of the most important challenges in service oriented systems is to deliver acceptable quality of service. For this purpose, it is required to monitor quality of service along different activities of service oriented system. Existing research focuses on specific activities but do not take into account all the...
With the development of IoT and the linking of sensors to the cloud, the demand for event-driven service invocation continues to increase. Moreover, as sensors will be wrapped as Web services, sensor service composition is required in order to detect complex events cost effectively. As the observed environment targeted here changes continuously, iterated sensor service composition will be required...
As service computing becomes increasingly prevalent, the number of web services grows rapidly. It becomes very important to recommend suitable, personalized web services to users. Collaborative Filtering based on Quality of Service (QoS) has been widely used for service recommendation, and variety of factors such as location, environment are taken into account to improve the accuracy of recommendation...
As services for Big Data Analysis (BDA) become prevalent, analysis services with intelligence and autonomy using automatic service composition (ASC) show bright prospects in the BDA market. Selection is one of the most important phases of successful ASC process. Moreover, it became competitive with the rise of demand for the services and criticalness of the BDA process. It is a challenge to accomplish...
Nowadays, there is a big increase in the usage ofdata analytic applications and services because of the growth inthe data produced from many different sources. The QoSproperties such as response time, reliability and latency of theseservices are important factors to decide which services to select.As we know, the energy consumption is becoming a big issue as aresult of IT expansion. Therefore, establishing...
In service oriented architecture, workflow discovery and web service composition (WSC) are two major challenges and many works have been carried out in the recent years. In this work, we address the problem of WSC in a multi-cloud environment. All existing methods assume that a feasible solution exists and solves the WSC problem, however when user constraints are hard, a feasible solution might not...
QoS-aware Web service composition has recently become one of the most challenging research issues. Although much work has been investigated to solve the problem, they mainly focus on certain QoS of Web services, while QoS with uncertainty exposes the most important characteristic in a real and highly dynamic environment on the Internet. In this paper, with the consideration of uncertain service QoS,...
Service constraints are usage restrictions on service features that are imposed by service providers. Such constraints need to be verified prior to the execution of a service in order to ensure correct service execution. In the case of composite services, the set of applicable constraints is derived from the service constraints defined over the individual service components that are part of the service...
Web services have been extended to give value-added customized services to users through service composition. Service Composition consists of four stages: planning, discovery, selection, and execution. Web service discovery and selection are becoming challenging and time-consuming tasks due to large number of Web services available on the internet. Organizing Web services into clusters of similar...
Advances in mobile Internet technology have enabled the clients of Web services to be able to adjust to context changes, which need to rely on monitoring to QoS of Web services. Most contemporary QoS prediction methods exploit the QoS characteristics for one specific dimension, e.g., time or location, and do not exploit the complicated relations among multi-dimension of context. This paper proposes...
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