CAJ | 학술논문

随着服务计算技术的发展及应用,在服务实时组合过程中,服务质量(Quality of Service,QoS)已经成为选择服务的重要依据之一.当前较多的 QoS 动态计算方法提出了多种方案用以解决 QoS 的动态计算问题,但都将 Web 服务视为单一独立个体,首先通过获取独立的参数来测算每个 Web 服务的 QoS,然后在服务组合过程中按照功能需求从具有相同功能的待选服务集合中选取 QoS 最好的服务.为了避免不同服务的功能差异对计算 QoS 的影响,突出相同功能服务各 QoS 因素之间的关联性对计算 QoS 的影响,从而在相同功能的服务中选取出相对质量较好的服务,文中提出将 Web 服务群体按照功能分组,在组内实时、动态地计算各服务 QoS 的方法,实验表明,文中方法计算得到的 QoS 具有较好的可靠性和较高的可信度.
수착복무계산기술적발전급응용,재복무실시조합과정중,복무질량(Quality of Service,QoS)이경성위선택복무적중요의거지일.당전교다적 QoS 동태계산방법제출료다충방안용이해결 QoS 적동태계산문제,단도장 Web 복무시위단일독립개체,수선통과획취독립적삼수래측산매개 Web 복무적 QoS,연후재복무조합과정중안조공능수구종구유상동공능적대선복무집합중선취 QoS 최호적복무.위료피면불동복무적공능차이대계산 QoS 적영향,돌출상동공능복무각 QoS 인소지간적관련성대계산 QoS 적영향,종이재상동공능적복무중선취출상대질량교호적복무,문중제출장 Web 복무군체안조공능분조,재조내실시、동태지계산각복무 QoS 적방법,실험표명,문중방법계산득도적 QoS 구유교호적가고성화교고적가신도.
With the developing and application of service computing technology,Quality of Service (QoS) has been becoming a critical factor for services selecting within service composition. Many methods have been put forward to calculate dynamic QoS,while each Web service is regarded as a single individual,independent parameters are obtained to calculate QoS of it,and then the best service is selected based on QoS within service composition. To avoid affection among different functional services on QoS calculation,highlight the correla-tion among QoS parameters of services that having same functions,and select out the Web service with relative better QoS,in this paper, Web services are grouped according to their functions and the dynamic calculation method of QoS is also proposed for Web services with-in groups. Experiments show that QoS obtained with the method of it has high credibility and reliability.