02188nas a2200217   4500008004100000245008400041210006900125260000900194300001400203490000700217520149000224653002101714653002301735653001601758653002801774100001301802700001301815700001401828700001101842856011701853       2013                        eng d00aException detection for web service composition using improved bayesian network0 aException detection for web service composition using improved b  c2013  a108 - 1140 v113 aNew application systems generated by composition of web services dynamically have become a development trend in network environment. However, since a variety of external services are invoked with different quality of service during processing, the problem of how to keep the execution stable must be addressed in order to improve the reliability and availability of the combination of services. In this paper, an approach of exception detection is presented for web service composition by improved Bayesian network. Firstly, the topological structure of Bayesian network is established, where the causal relationships between underlying web services are mapped to Bayesian network in service combination process. The conventional Bayesian network algorithm is improved to satisfy the demand of better conversion from nodes in web service composition to nodes in Bayesian network. Secondly, the parameter setting in Bayesian network is explored for determining the prior probability of service nodes and the conditional probability of service output node. Thirdly, the algorithm of the improved exception detection model is introduced, with the aim of locating the web services that cause exceptions in the execution of composite services. Lastly, a case study is given and the results analysis is also conducted. The results show that the presented approach not only considers the uncertainty during exception detection, but also can identify the exception web services in the process.10aBayesian network10aException handling10aWeb service10aWeb service composition1 aChen, Y.1 aYing, S.1 aZhang, L.1 aWu, J.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84879099166&partnerID=40&md5=0973327f022946c84a165872a228552401640nas a2200229   4500008004100000245014300041210006900184260000900253300001400262490000600276520085400282653001501136653002701151653002001178653002401198653000801222653001401230653001601244100001601260700001701276856011701293       2008                        eng d00aClassification of geographic web services for building an efficient geographic information system offering profitable value added services0 aClassification of geographic web services for building an effici  c2008  a396 - 4040 v63 aIn this paper we present best practices in implementing a geographic information system that may be used as a foundation for commercial geographic web services. On one hand we explain important rules to be followed during the design of the information system itself, e.g. the data supplyment process. On the other hand we introduce different categories for potential geographic web services and analyze these categories according to several properties. From some of those properties rules can be extracted on how well every kind of service is suited for commercial use and which technical context (e.g. security) has to be observed to be able to offer it. The whole article is based on a case study and prototype where we implemented a geographic database and geographic web services from each of the different categories in the domain of hydrology.10aCase study10aCommercial web service10aGeo web service10aGeographic services10aGIS10aHydrology10aWeb service1 aKleiner, C.1 aAliste, A.G.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84865525965&partnerID=40&md5=11ac40933f4282aacc48cbc4550b85c401421nas a2200205   4500008004100000245006600041210006600107260000900173300001200182490000600194520080100200653001401001653001401015653001701029653001601046100001101062700001301073700001201086856011701098       2006                        eng d00aAutomatic and flexible web services discovery in semantic web0 aAutomatic and flexible web services discovery in semantic web  c2006  a22 - 250 v43 aThe main objective of the semantic web is to make the interoperation among web services or between users and web services more automated and flexible. The basic step toward the interoperation is that users or web services can discover their required web services. In this paper we present a practical application on Semantic Web and Web Services concepts where a flexible and automatic matching procedure in e-learning is shown. We illustrate how the requirements, web services and domain knowledge are described in machine-understandable forms to support the automatic and flexible discovery of web services. Then a matchmaking algorithm based on the semantic information is proposed. Finally the design and implementation of a prototype for the automatic discovery of web services is described.10aDiscovery10aElearning10aSemantic web10aWeb service1 aLu, L.1 aChen, J.1 aZhu, G.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-33748262446&partnerID=40&md5=f576cda3c55219ff4617a04d7dcb8d8f01605nas a2200229   4500008004100000245012000041210006900161260000900230300001200239490000600251520087700257653000801134653000801142653001601150653001601166653002401182100001201206700001201218700001601230700001201246856011701258       2006                        eng d00aA dynamic priority allocation scheme of messages for differentiated web services satisfying service level agreement0 adynamic priority allocation scheme of messages for differentiate  c2006  a26 - 310 v43 aRecently many enterprises are adopting web services as the standard between heterogeneous software in the XML message based distributed environment to carry out businesses from B2C to B2B. For effective application of web services, differentiated service quality must be guaranteed. However, majority of the current web services do not differentiate quality of messages and the current web servers do not reflect the quality factors of the service level agreement settled between the service provider and user. Our research analyzes the appropriate quality factor for the quality level where differentiated service is provided and suggests a method for assigning priorities to web service message processing processes based on these quality factors. The suggested method assigns the priority dynamically in order to satisfy the service level agreement as much as possible.10aB2B10aB2C10aWeb servers10aWeb service10aWeb service quality1 aKim, D.1 aLee, S.1 aAbraham, A.1 aHan, S.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-33748284649&partnerID=40&md5=0ba79237064c0f9d6784d65c0224a6b4