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< Page ,Total 26 >
Query for semantic web service based on SPARQL-DL EI Scopus CSCD PKU
期刊论文 | 2011 , 39 (3 A) , 52-56 | Tien Tzu Hsueh Pao/Acta Electronica Sinica
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Abstract :

The Semantic Web service discovery is a hot spot in the current web service research field. Its core research content is service descriptions and the corresponding discovery methods. Service description can be divided into the service request description and advertisement description. Service advertisement descriptions are usually complete, descriptive, information-rich descriptions; while service request description is concerned only with some of the characteristics of services, usually does not constitute a complete description of the service. Current methods of service discovery using the same mechanism to describe both request and advertisement. Compare and identify the identity or similarity of the corresponding part between the two as matching basis. Build a complete fictive service description as service request limit the practicability of the method. In this paper, we propose to use semantic web query language SPARQL-DL as the service request description language to retrieve OWL-S form published services. Treat the service discovery issue as query against the knowledge base. Through the experiment, confirmed that the method is practical, simple, reliable and easy-to-use.

Keyword :

Description languages Semantic web service discovery Service advertisements Service description Service discovery Service query Service researches SPARQL-DL

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GB/T 7714 Wang, Hai , Gao, Ling , Fan, Lin et al. Query for semantic web service based on SPARQL-DL [J]. | Tien Tzu Hsueh Pao/Acta Electronica Sinica , 2011 , 39 (3 A) : 52-56 .
MLA Wang, Hai et al. "Query for semantic web service based on SPARQL-DL" . | Tien Tzu Hsueh Pao/Acta Electronica Sinica 39 . 3 A (2011) : 52-56 .
APA Wang, Hai , Gao, Ling , Fan, Lin , Li, Zeng-Zhi . Query for semantic web service based on SPARQL-DL . | Tien Tzu Hsueh Pao/Acta Electronica Sinica , 2011 , 39 (3 A) , 52-56 .
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基于SPARQL-DL的语义Web服务查询 CSCD PKU
期刊论文 | 2011 , (z1) , 52-56 | 电子学报
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Abstract :

语义Web服务发现是当前Web服务研究领域的热点,其核心研究内容是服务描述及相应的发现方法.服务描述分为请求描述与发布描述,发布描述具有描述完整,信息丰富的特征,而服务请求描述仅关注服务的部分特征,通常不构成一个完整的服务描述.现有方法使用相同机制进行请求描述与发布描述,以比对请求与发布中对应部分的同一性或相似性作为匹配依据.构建假想的完整服务描述作为服务请求既不合理也难以实施,从而限制了方法的实用性.本文提出以语义Web查询语言SPARQL-DL作为服务请求描述语言,以OWL-S作为服务发布描述语言,将服务发现问题转化为知识库的查询,从而进行有效的服务发现.通过实验,证实了该方法具有实用性强,简单可靠的特点.

Keyword :

语义Web服务 SPARQL-DL 服务查询

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GB/T 7714 王海 , 高岭 , 范琳 et al. 基于SPARQL-DL的语义Web服务查询 [J]. | 电子学报 , 2011 , (z1) : 52-56 .
MLA 王海 et al. "基于SPARQL-DL的语义Web服务查询" . | 电子学报 z1 (2011) : 52-56 .
APA 王海 , 高岭 , 范琳 , 李增智 . 基于SPARQL-DL的语义Web服务查询 . | 电子学报 , 2011 , (z1) , 52-56 .
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A Novel ISAR Alogrithm for the Imaging of Ship Targets Based on AM-LFM Model EI CPCI-S Scopus
会议论文 | 2010 , 2147-+ | IEEE 10th International Conference on Signal Processing
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Abstract :

Rang-Instaneous-Doppler (RID) processing is widely used in ISAR imaging of maneuvering target and acceptable image can be achieved when the amplitude modulation effect of scatterers echoes can be neglected during intergation time, whereas, the RID method based on the assumption above does not work properly when the variant amplitude modulation of scatterers' echoes involved, such as ship target. In this paper, a multicomponent amplitude modulation and linear frequency modulation(AM-LFM) signal model developed and a fast parameter estimation technique-DechirpClean method proposed. To achieve the best quality in DechirpClean ISAR image, a new effective optimum imaging interval selection scheme addressed. The performance of proposed method is verified by comparing the result with the image produced by conventional RID method from the real data processing.

Keyword :

ship imaging RID motion compensation AM-LFM optimum imaging time interval selection

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GB/T 7714 Long, Zhang , Sen, Si Dong . A Novel ISAR Alogrithm for the Imaging of Ship Targets Based on AM-LFM Model [C] . 2010 : 2147-+ .
MLA Long, Zhang et al. "A Novel ISAR Alogrithm for the Imaging of Ship Targets Based on AM-LFM Model" . (2010) : 2147-+ .
APA Long, Zhang , Sen, Si Dong . A Novel ISAR Alogrithm for the Imaging of Ship Targets Based on AM-LFM Model . (2010) : 2147-+ .
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A description-logic-based preconditions/effects matchmaking method for semantic web services EI CSCD PKU
期刊论文 | 2010 , 44 (4) , 39-42+92 | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
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Abstract :

Since the results of the existing matchmaking methods for semantic Web service are more one-sided by only focusing on the matchmaking of inputs/outputs descriptions, a description logic based semantic Web service preconditions/effects matchmaking method is proposed. The knowledge base consistency checking function of description logic reasoning is used to determine the logical implication between preconditions/effects of service requests and advertising. A compatible matching degree is proposed to measure and to compare the pros and cons of the results of preconditions/effects matchmaking. Experimental results show that the proposed method has a higher recall rate with a considerable precision rate. In particular, better matching results are obtained when both the inputs/outputs matchmaking and the preconditions/effects matchmaking are combined.

Keyword :

Consistency checking Description logic Logical implications Matching degree Precision rates Preconditions/effects Service matchmaking Service requests

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GB/T 7714 Wang, Hai , Chen, Yan , Fan, Lin et al. A description-logic-based preconditions/effects matchmaking method for semantic web services [J]. | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2010 , 44 (4) : 39-42+92 .
MLA Wang, Hai et al. "A description-logic-based preconditions/effects matchmaking method for semantic web services" . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 44 . 4 (2010) : 39-42+92 .
APA Wang, Hai , Chen, Yan , Fan, Lin , Li, Zengzhi . A description-logic-based preconditions/effects matchmaking method for semantic web services . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2010 , 44 (4) , 39-42+92 .
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A method of top-k web service discovery using semantic rule characterizing service request EI Scopus CSCD PKU
期刊论文 | 2010 , 44 (2) , 35-38 | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
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Abstract :

In order to better meet customers' demands for the provision of web services, the semantic rules are used as the means to describe the service requests and the OWL-S service description language is used as service advertisement description language. The contribution of the semantic rules to the matchmaking results is reflected and the calculation of matching degree is facilitated by adding an impact factor to the rules in the service request description. An accommodation coefficient is introduced to judge if a given matching degree is enough to have a matchmaking success. Experiments using OWL-S TC V2 testing service set show that the proposed method increases the effective rate of recall and accuracy. Comparisons with the sub-sumption and the keyword matching based method in cases of k setting 2, 5, 8, 10, 15 and the maximum possible matching being 20 show that the top-k precision is promoted 15%, 15%, 9%, 8%, 2% and 5%, 13%, 30%, 33%, 30%, respectively, while the accurate rate remains stable at 95% or more.

Keyword :

Accommodation coefficients Description languages Key word matching Precision Semantic rules Service advertisements Service description language Web service discovery

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GB/T 7714 Wang, Hai , Zhu, Zhengdong , Fan, Lin et al. A method of top-k web service discovery using semantic rule characterizing service request [J]. | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2010 , 44 (2) : 35-38 .
MLA Wang, Hai et al. "A method of top-k web service discovery using semantic rule characterizing service request" . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 44 . 2 (2010) : 35-38 .
APA Wang, Hai , Zhu, Zhengdong , Fan, Lin , Li, Zengzhi . A method of top-k web service discovery using semantic rule characterizing service request . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2010 , 44 (2) , 35-38 .
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Research on QoS-aware and dynamic configuration of web services composition system EI Scopus CSCD PKU
期刊论文 | 2010 , 44 (2) , 25-30 | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
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Abstract :

The Web services composition system with static configuration lacks of adaptive capacity to both the QoS variability of component services and the failure-prone environment. The static configuration can not reflect the dynamic evolution process of Web services composition when the number of component services increases continually. A method of QoS-aware and dynamic configuration for Web services composition is presented. The functional dependency relationship of Web services is described formally via an extended Petri net to form a configuration scheme. The configuration scheme is verified by two algorithms, which are used to confirm there are no loop dependency relationship and illegal end state in the configuration scheme. An optimal configuration selection algorithm is used to search the configuration with best QoS from the configuration scheme. Simulation experiments are conducted to compare the effects on the satisfaction rate of user request for service among the dynamic, static and random configurations. The results show that the QoS of composition service can be improved greatly by using the proposed modeling method and algorithms.

Keyword :

Composition services Dependency relationship Dynamic configuration Functional dependency Number of components Optimal configuration Random configurations Web services composition

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GB/T 7714 Yang, Huaizhou , Li, Zengzhi . Research on QoS-aware and dynamic configuration of web services composition system [J]. | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2010 , 44 (2) : 25-30 .
MLA Yang, Huaizhou et al. "Research on QoS-aware and dynamic configuration of web services composition system" . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 44 . 2 (2010) : 25-30 .
APA Yang, Huaizhou , Li, Zengzhi . Research on QoS-aware and dynamic configuration of web services composition system . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2010 , 44 (2) , 25-30 .
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Improving QoS of web service composition by dynamic configuration EI Scopus
期刊论文 | 2010 , 9 (3) , 422-429 | Information Technology Journal
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Abstract :

In order to achieve self-adaptation to run-time environment and self-management of Web service composition, an extended hierarchical Petri net is presented to reflect the feasible configuration scheme of composite service. Being different from related works, the dynamic configuration scheme and execution process of Web service composition can be reflected together in the extended model. Furthermore, a rapid QoS calculation strategy of composite service is presented. Some important QoS calculation formulas are presented and proved. Based on the extended model and the QoS calculation strategy, a configuration with optimal QoS can be selected dynamically. The QoS of composite service is improved. The soundness and correctness of the dynamic configuration method are proved by simulation results and corresponding analysis. © 2010 Asian Network for Scientific Information.

Keyword :

Calculation formula Composite services Dynamic configuration Execution process Hierarchical petri nets Runtime environments Self adaptation Web service composition

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GB/T 7714 Yang, Huaizhou , Li, Zengzhi . Improving QoS of web service composition by dynamic configuration [J]. | Information Technology Journal , 2010 , 9 (3) : 422-429 .
MLA Yang, Huaizhou et al. "Improving QoS of web service composition by dynamic configuration" . | Information Technology Journal 9 . 3 (2010) : 422-429 .
APA Yang, Huaizhou , Li, Zengzhi . Improving QoS of web service composition by dynamic configuration . | Information Technology Journal , 2010 , 9 (3) , 422-429 .
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A formal model description for service agents negotiation EI Scopus
会议论文 | 2010 , 151-154 | 2010 Asia-Pacific Conference on Wearable Computing Systems, APWCS 2010
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Abstract :

In order to improve independence and autonomy capability in Web services deployment and publishment, and enhance understanding or updating capability of service knowledge between service agents in service discovery and composition. Following a conjunctive study of agent and Semantics Web services technology, service knowledge model and extended service description layers are proposed to accommodate agent negotiation, and design methods for revising and updating service agent's belief knowledge. It finally overcomes those defects that Semantics Web service can only comprise straightforward computational procedures with passive and predictable behaviors. © 2010 IEEE.

Keyword :

Agent negotiations Computational procedures Design method Knowledge model Semantics web Service agents Service description Service discovery

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GB/T 7714 Zhai, Sheping , Wei, Juanli , Li, Zengzhi . A formal model description for service agents negotiation [C] . 2010 : 151-154 .
MLA Zhai, Sheping et al. "A formal model description for service agents negotiation" . (2010) : 151-154 .
APA Zhai, Sheping , Wei, Juanli , Li, Zengzhi . A formal model description for service agents negotiation . (2010) : 151-154 .
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以语义规则刻画服务请求的Top-k Web服务发现方法 CSCD PKU
期刊论文 | 2010 , (2) , 35-38 | 西安交通大学学报
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Abstract :

为了更好地提供满足客户需求的Web服务,在充分研究服务发布描述、服务请求描述等特点的基础上,提出了以语义规则刻画的服务请求描述,并以本体构建了服务发布描述.通过对语义规则添加影响因子,使得服务匹配精度可以通过匹配度来度量,并按照给定的调节系数决定最终匹配是否成功.在OWL-S TC V2测试服务集合中进行了对比实验,结果表明,所提方法可以有效提高查全率和查准率,特别是在最大匹配数为20获得的k分别为2、5、8、10、15的情况下,Top-k查准率比基于描述逻辑包含检测的算法分别提高了15%、15%、9%、8%、2%,比关键字算法分别提高了5%、13%、30%、33%、30%,而查准率稳定在95%以上.

Keyword :

查准率 Web服务发现 语义规则

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GB/T 7714 王海 , 朱正东 , 范琳 et al. 以语义规则刻画服务请求的Top-k Web服务发现方法 [J]. | 西安交通大学学报 , 2010 , (2) : 35-38 .
MLA 王海 et al. "以语义规则刻画服务请求的Top-k Web服务发现方法" . | 西安交通大学学报 2 (2010) : 35-38 .
APA 王海 , 朱正东 , 范琳 , 李增智 . 以语义规则刻画服务请求的Top-k Web服务发现方法 . | 西安交通大学学报 , 2010 , (2) , 35-38 .
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QoS敏感的服务组合动态配置研究 CSCD PKU
期刊论文 | 2010 , (2) , 25-30 | 西安交通大学学报
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Abstract :

针对静态配置的Web服务组合系统无法适应组件服务QoS的动态变化,以及对易错环境缺乏自适应性和不能反映系统不断演进特征的问题,提出了一种QoS敏感的服务组合系统动态配置方法.通过扩展Petri网对服务依赖关系进行建模,形成一个形式化的系统配置方案;利用无循环依赖关系验证算法和最终状态合法性验证算法验证了系统配置方案的正确性;提出了一种最优配置选择算法以选取具有最优QoS的服务配置.仿真实验对比了动态配置、静态配置和随机配置对用户服务请求满意度的影响,结果表明,所提建模方法和相应算法能大幅改善组合服务的QoS.

Keyword :

Web服务组合 自适应系统 优化配置 Petri网

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GB/T 7714 杨怀洲 , 李增智 . QoS敏感的服务组合动态配置研究 [J]. | 西安交通大学学报 , 2010 , (2) : 25-30 .
MLA 杨怀洲 et al. "QoS敏感的服务组合动态配置研究" . | 西安交通大学学报 2 (2010) : 25-30 .
APA 杨怀洲 , 李增智 . QoS敏感的服务组合动态配置研究 . | 西安交通大学学报 , 2010 , (2) , 25-30 .
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