Web service selection and composition based on uncertain quality of service

2021 ◽  
Author(s):  
Remaci Zeyneb Yasmina ◽  
Hadjila Fethallah ◽  
Lahfa Fadoua
Keyword(s):  
Quality Of Service ◽  
Web Service ◽  
Service Selection ◽  
Web Service Selection

scholarly journals Performance Evaluation of Quality of Service (QoS) based Web Service Selection Methods for Healthcare Product Shopping Domain Using Analysis of Variance (ANOVA)

2021 ◽  
Author(s):  
Maheswari S ◽  
Pitchai R ◽  
Supraja P ◽  
Babu S
Keyword(s):  
Quality Of Service ◽  
Web Service ◽  
Analysis Of Variance ◽  
Service Selection ◽  
Fuzzy Topsis ◽  
Selection Methods ◽  
Healthcare Product ◽  
Web Service Selection ◽  
Using Data

Abstract Guaranteeing Quality of Service (QoS) concerning web administrations is the capacity to respond to the necessities and comprehend the prerequisites according to the tendencies of a client. It is resolved subject to the non-practical properties of the web administrations. Dependent upon the conditions, administrations clients may have an extent of tendencies for the non utilitarian principles. This made a way for different QoS based web administrations assurance segments which along these lines require an evaluation plot for grasping a particular methodology. Investigation of change is a particular kind of verifiable hypothesis testing used for making decisions using data. The goal of the paper is to dismember the plans specifically Analytical Hierarchical preparing (AHP), Logical Scoring Preference (LSP) and Fuzzy Topsis reliant on extent of customer tendency norms and investigate them using Analysis of Variance (ANOVA). QWS dataset has been used for exploring recently referenced three plans. Preliminary outcomes show that the Fuzzy Topsis contrive beats the other web organization assurance techniques.

Quality-of-Service Based Web Service Composition and Execution Framework

2014 ◽  
pp. 74-93
Author(s):  
Bassam Al Shargabi ◽  
Osama Al-haj Hassan ◽  
Alia Sabri ◽  
Asim El Sheikh
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Selection ◽  
Web Service Composition ◽  
Web Service Selection ◽  
Selection Decisions ◽  
Uddi Registry

Software is gradually becoming more built by composing web services to support enterprise applications integration; thus, making the process of composing web services a significant topic. The Quality of Service (QoS) in web service composition plays a crucial role. As such, it is important to guarantee, monitor, and enforce QoS and ability to handle failures during execution. Therefore, an urgent need exists for a dynamic Web Service Composition and Execution (WSCE) framework based on QoS constraints. A WSCE broker is designed to maintain the following function: intelligent web service selection decisions based on local QoS for individual web service or global QoS based selection for composed web services, execution tracking, and adaptation. A QoS certifier controlled by the UDDI registry is proposed to verify the claimed QoS attributes. The authors evaluate the composition plan along with performance time analysis.

scholarly journals Effective Quality Of Service Browsing For Web Service Selection

2021 ◽  
Author(s):  
Shilpi Verma
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
User Study ◽  
Clustering Algorithms ◽  
Service Selection ◽  
Interval Data ◽  
Weighted Clustering ◽  
Web Service Selection

The growing number of Services on the Web has made locating desired Web Services a sizable challenge. Web Service requestors deem a Quality of Service (QoS) based Web Service selection important in terms of providing a relevant and user centric service selection experience. In this thesis an interactive QoS based Web Service browsing mechanism is proposed, which makes use of three clustering algorithms including vector-based, preference-based and weighted clustering. We use symbolic interval data as the principle representation of QoS attributes. The browsing mechanism which was implemented as part of this research allows service requestors to prioritize their search by hierarchically clustering their web services. This is done in order of their preferences and also by attaching a weight to each QoS attribute, which is a beneficial compromise between performance-high preference-based clustering and time-efficient vector-based clustering, Along with several extensive experiments, a user study was conducted in order to test the usability of this browsing mechanism and to test the overall efficiency and performance of the three clustering algorithms in comparison. The result of the experiment led to evidences that preference-based browsing approach was the most efficient one when compared to vector-based or weighted clustering approaches.

scholarly journals Effective Quality Of Service Browsing For Web Service Selection

2021 ◽  
Author(s):  
Shilpi Verma
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
User Study ◽  
Clustering Algorithms ◽  
Service Selection ◽  
Interval Data ◽  
Weighted Clustering ◽  
Web Service Selection

The growing number of Services on the Web has made locating desired Web Services a sizable challenge. Web Service requestors deem a Quality of Service (QoS) based Web Service selection important in terms of providing a relevant and user centric service selection experience. In this thesis an interactive QoS based Web Service browsing mechanism is proposed, which makes use of three clustering algorithms including vector-based, preference-based and weighted clustering. We use symbolic interval data as the principle representation of QoS attributes. The browsing mechanism which was implemented as part of this research allows service requestors to prioritize their search by hierarchically clustering their web services. This is done in order of their preferences and also by attaching a weight to each QoS attribute, which is a beneficial compromise between performance-high preference-based clustering and time-efficient vector-based clustering, Along with several extensive experiments, a user study was conducted in order to test the usability of this browsing mechanism and to test the overall efficiency and performance of the three clustering algorithms in comparison. The result of the experiment led to evidences that preference-based browsing approach was the most efficient one when compared to vector-based or weighted clustering approaches.

Quality-of-Service Based Web Service Composition and Execution Framework

2011 ◽  
Vol 6 (3) ◽  
pp. 57-74 ◽  
Author(s):  
Bassam Al Shargabi ◽  
Osama Al-haj Hassan ◽  
Alia Sabri ◽  
Asim El Sheikh
Keyword(s):  
Quality Of Service ◽  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Selection ◽  
Web Service Composition ◽  
Web Service Selection ◽  
Selection Decisions ◽  
Uddi Registry

Software is gradually becoming more built by composing web services to support enterprise applications integration; thus, making the process of composing web services a significant topic. The Quality of Service (QoS) in web service composition plays a crucial role. As such, it is important to guarantee, monitor, and enforce QoS and ability to handle failures during execution. Therefore, an urgent need exists for a dynamic Web Service Composition and Execution (WSCE) framework based on QoS constraints. A WSCE broker is designed to maintain the following function: intelligent web service selection decisions based on local QoS for individual web service or global QoS based selection for composed web services, execution tracking, and adaptation. A QoS certifier controlled by the UDDI registry is proposed to verify the claimed QoS attributes. The authors evaluate the composition plan along with performance time analysis.

QoS Constrains Model: Establishing QoS Association for Ontology-Based Web Service Selection Mechanism

2006 ◽  
Vol 10 (5) ◽  
pp. 705-712
Author(s):  
Laila Taher ◽  
◽  
Rawshan Basha ◽  
Hazem El Khatib ◽  
◽  
...  
Keyword(s):  
Quality Of Service ◽  
Web Service ◽  
Service Oriented Architecture ◽  
Service Selection ◽  
Important Criterion ◽  
Selection Mechanism ◽  
Web Service Selection ◽  
Service Oriented ◽  
Constraints Model

Quality of Service (QoS) is an important criterion for Web service selection. The work in this paper is based on QoS Information & Computation framework (QoS-IC) [1]. QoS-IC framework supports QoS-based service selection in Service Oriented Architecture (SOA), namely Web services. In this paper, we extend the functionality of QoS-IC framework with QoS-Constraints Model. QoS-Constraints establish an association relationship between different QoS properties and are used to govern the QoS-based service selection in the underlying algorithm. We have enhanced the algorithm to accommodate QoS-Constraints and discussed an experimental evaluation based on an implementation prototype that shows how QoS-Constraints introduce efficiency to the QoS-based service selection mechanism and save valuable time for consumers.

Eliminating the Correlations of Quality of Service Criteria in Web Service Selection

2015 ◽  
Vol 12 (2) ◽  
pp. 292-297
Author(s):  
Lianyong Qi ◽  
Wanchun Dou ◽  
Jiguo Yu ◽  
Xiaona Xia ◽  
Xuyun Zhang
Keyword(s):  
Quality Of Service ◽  
Web Service ◽  
Service Selection ◽  
Web Service Selection
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