6,503 Hits in 4.4 sec

Using Dynamic Asynchronous Aggregate Search for Quality Guarantees of Multiple Web Services Compositions [chapter]

Xuan Thang Nguyen, Ryszard Kowalczyk, Jun Han
2006 Lecture Notes in Computer Science  
Secondly, we present a dynamic DisCSP algorithm to solve the problem and discuss our initial experiment to show the feasibility of our approach for multiple Web service compositions with QoS guarantees  ...  As for service providers and their partners, the Quality of service (QoS) offered by a composite Web service is important.  ...  Experiments show that the QoS guarantee problem for multiple Web service can efficiently be solved with DisCSP.  ... 
doi:10.1007/11948148_11 fatcat:lqtqlv3dvje3hofk3cxbof6t74


J. Ghayathri .
2016 International Journal of Research in Engineering and Technology  
In order to achieve BPEL (Business Process Execution Language) process's QoS (Quality of Service) global optimization on dynamic Web service composition, the traditional dynamic Web service invocation  ...  This paper aims to determine a subset of web services from the candidate services to be invoked at run-time so as to successfully and efficiently orchestrate a composite web service.  ...  The proposed model can realize dynamic Web service composition with QoS global optimization by adding the QoSOSSP and BPELCSP.  ... 
doi:10.15623/ijret.2016.0506032 fatcat:gxvrhg5q7jcv3gaokv54ujbxjq

An Effective Dynamic Web Service Selection Strategy with Global Optimal QoS Based on Particle Swarm Optimization Algorithm

Guosheng Kang, Jianxun Liu, Mingdong Tang, Yu Xu
2012 2012 IEEE 26th International Parallel and Distributed Processing Symposium Workshops & PhD Forum  
Dynamic Web service selection with global QoS optimization in Web service composition is a critical issue in Web service composition.  ...  The basic idea of the algorithm is to transform the original Web service selection problem into a multi-objective services composition optimization problem with global QoS constraints, which is further  ...  The essence of the algorithm is that the problem of dynamic Web service selection with global optimal QoS is transformed into a multi-objective service composition with QoS constraints.  ... 
doi:10.1109/ipdpsw.2012.281 dblp:conf/ipps/KangLTX12 fatcat:dkn5vpkq45ho3j4l756eygjxie

Dynamic Asynchronous Aggregate Search for Solving QoS Compositions of Web Services

Xuan Nguyen, Ryszard Kowalczyk, Khoi Phan
2006 2006 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology Workshops  
Secondly, we investigate the applicability of DynAAS in the Web service domain and argue that DynAAS is suitable for solving the QoS compositions of Web services.  ...  We also carry out the experiments to show the efficiency of our proposed algorithm in solving the QoS composition problem.  ...  Web service composition in general focuses on building a new value-added composite Web service from a number of existing component Web services.  ... 
doi:10.1109/wi-iatw.2006.60 dblp:conf/iat/NguyenKP06 fatcat:ksd2hi3fqzg2bfonk753sqpfpa

WSOL — Web Service Offerings Language [chapter]

Vladimir Tosic, Kruti Patel, Bernard Pagurek
2002 Lecture Notes in Computer Science  
Further, it supports dynamic adaptation and management of Web Service compositions using manipulation of service offerings.  ...  As classes of service for Web Services are determined by combinations of various constraints, WSOL enables formal specification of functional constraints, some QoS (a.k.a., non-functional) constraints,  ...  One of the goals of WSEL is to enable specification of some constraints, including QoS, for Web Services described with WSDL. There is no detailed publication on WSEL to date.  ... 
doi:10.1007/3-540-36189-8_5 fatcat:7wttzawbebd55hdljbxnhdjlra

Distributed and Scalable QoS Optimization for Dynamic Web Service Composition

Mohammad Alrifai
2008 International Conference on Service Oriented Computing  
Web service composition requests are usually combined with end-to-end QoS requirements, which are specified in terms of non-functional properties (e.g. response time, throughput and price).  ...  The aim of this thesis is to develop scalable QoS optimization solutions that fit better to the distributed environment of web services.  ...  The next steps of this work include extending the existing model to support different styles of web service compositions and QoS constraints.  ... 
dblp:conf/icsoc/Alrifai08 fatcat:7l7dwoofivaxjmxhaaqqk536qy

Computation of QoS While Composing Web Services

Khozema Ali, Dr. Tarun, Dr. Mohemmed
2017 International Journal of Advanced Computer Science and Applications  
Composition of web services is a process where a set of web services, heterogeneous in nature, are clubbed together in order to perform a specific task.  ...  Composition of web services has emerged as a fast growing field of research since an atomic service in its entirety is not capable to perform a specific task.  ...  [1] proposed a Multi-Agents architecture to discover the optimized Composite QOS (CQoS). Composite Web services were selected having negotiation with Multiple Agents.  ... 
doi:10.14569/ijacsa.2017.080343 fatcat:2xqd5yfkijfpbiv6sl2vu3vlx4

On Requirements for Ontologies in Management of Web Services [chapter]

Vladimir Tosic, Babak Esfandiari, Bernard Pagurek, Kruti Patel
2002 Lecture Notes in Computer Science  
Formal specification of various constraints, including quality of service (QoS) and price, is very important for successful dynamic (i.e., runtime) composition of Web Services.  ...  In this paper we discuss some requirements for ontologies that can be used in representing QoS constraints and in management of Web Services, with special focus on QoS metrics, measurement units, and currency  ...  dynamic service composition and that it can help reduce unexpected interactions between the composed Web Services.  ... 
doi:10.1007/3-540-36189-8_19 fatcat:ouxnhpfpwvgjdlfjdxfwcodddq

A survey on bio-inspired algorithms for web service composition

Lijuan Wang, Jun Shen, Jianming Yong
2012 Proceedings of the 2012 IEEE 16th International Conference on Computer Supported Cooperative Work in Design (CSCWD)  
A survey on bio-inspired algorithms for web service composition. Abstract Web service composition has become a promis-ing technology in a variety of e-science or e-business areas.  ...  By analyzing and investigating dierent approaches, this paper gives an overview about the researches on bio-inspired al-gorithm in web service composition and point out future directions.  ...  Anyhow, finding a service plan with global constraints is known as a NP-hard problem [10] . So there are a number of models for web service composition.  ... 
doi:10.1109/cscwd.2012.6221875 dblp:conf/cscwd/WangSY12 fatcat:6cdmwue5czdojas4qmhz6uqpxi

ESCA: Evolution-strategy based Service Composition Algorithm for Multiple QoS Constrained Cloud Applications

Xiao Peng, Changsong Liu
2014 International Journal of Future Generation Communication and Networking  
However, service composition with constraint to QoS constraints still remains as a challenging issue, because both the service performance and the QoS requirements of applications tend to be dynamically  ...  programming problem of multiple QoS constrained service composition.  ...  å (4) Evolution Strategy based Service Composition Algorithm In this work, we focus on Web service composition with multiple QoS constraints.  ... 
doi:10.14257/ijfgcn.2014.7.1.25 fatcat:gpdl7oomy5aazg4xh2zwbuoa7y

Reliable web service selection via QoS uncertainty computing

Shangguang Wang, Zibin Zheng, Qibo Sun, Hua Zou, Fangchun Yang
2011 International Journal of Web and Grid Services  
Performance of web services may fluctuate owing to the dynamic internet environment, which makes the Quality-of-Service (QoS) of web services inherently uncertain.  ...  With the increase in web services in the internet, selecting the optimal service from a set of functionally equivalent candidates becomes an important research problem.  ...  (2010) proposed a choreography model where each composite web service participating is associated with an abstract process and is capable of dynamically Reliable web service selection via QoS uncertainty  ... 
doi:10.1504/ijwgs.2011.044696 fatcat:elz4divwmvhg3lizmjn3icjbw4

An Extended Broker Centric Dynamic Web Service Discovery and Composition Framework

Maya Rathore, Ugrasen Suman
2017 International Journal of Software Engineering and Its Applications  
As the number of functionally identical web service increases on the web, web service selection and composition based on Quality of Service (QoS) has gained much attention.  ...  Broker based dynamic web service composition systems may be the best possible solution to avoid the problem of unavailability and reliability of service during runtime service composition.  ...  A broker-based framework for securing intelligent web services composition and dynamic selection is presented with QoS attributes [1] .  ... 
doi:10.14257/ijseia.2017.11.9.03 fatcat:pex4tfasfrb6tf2r2chfwzl2eq

Combining global optimization with local selection for efficient QoS-aware service composition

Mohammad Alrifai, Thomas Risse
2009 Proceedings of the 18th international conference on World wide web - WWW '09  
The run-time binding of web services has been recently put forward in order to support rapid and dynamic web service compositions.  ...  With the growing number of alternative web services that provide the same functionality but differ in quality parameters, the service composition becomes a decision problem on which component services  ...  Each test case consists of a service composition request with n service classes, l service candidates per class and m global QoS constraints.  ... 
doi:10.1145/1526709.1526828 dblp:conf/www/AlrifaiR09 fatcat:5lqrbbdm5zaktosd72vfdwgk44

Towards dynamic formation of temporal constraints for the service level agreements negotiation

Azlan Ismail, Jun Yan, Jun Shen
2009 2009 IEEE International Conference on Service-Oriented Computing and Applications (SOCA)  
SLAs play an important role for the QoS-driven service composition.  ...  This framework is proposed in the context of service selection and SLA negotiation. It provides the foundation towards the dynamic formation.  ...  Each service in the composition has a set of preferred Web services that have similar functionality but possibly different QoS values with temporal constraints.  ... 
doi:10.1109/soca.2009.5410465 dblp:conf/soca/IsmailYS09 fatcat:ulizjrlk3vcd3cjwqzetg4fqbm

Selecting skyline services for QoS-based web service composition

Mohammad Alrifai, Dimitrios Skoutas, Thomas Risse
2010 Proceedings of the 19th international conference on World wide web - WWW '10  
Web service composition enables seamless and dynamic integration of business applications on the web.  ...  Therefore, non-functional, quality of service (QoS) aspects (e.g. response time, availability, etc.) are crucial for selecting the web services to take part in the composition.  ...  QoS-based service composition aims at finding the best combination of web services that satisfy a set of end-to-end QoS constraints in order to fulfill a given SLA. Example.  ... 
doi:10.1145/1772690.1772693 dblp:conf/www/AlrifaiSR10 fatcat:je2ltclzkzgnzmw6lz7v2u3jrq
« Previous Showing results 1 — 15 out of 6,503 results