Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item A review of dynamic web service composition techniques(2011) D’Mello, D.A.; Ananthanarayana, V.S.; Salian, S.The requester's service request sometimes includes multiple related functionalities to be satisfied by the Web service. In many cases theWeb service has a limited functionality which is not sufficient to meet the requester's complex functional needs. The discovery mechanism for such complex service request involving multiple tasks (operations) may fail due to unavailability of suitable Web services advertised in the registry. In such a scenario, a need arises to compose the available atomic or composite Web services to satisfy the requester's complex request. Dynamic Web service composition generates and executes the composition plan based on the requester's runtime functional and nonfunctional requirements. This paper provides the review of Web service composition architectures and techniques used to generate new (value added) services. © Springer-Verlag Berlin Heidelberg 2011.Item Delivering LBA with LBS using service-oriented architecture(IEEE Computer Society help@computer.org, 2012) D'Souza, M.; Ananthanarayana, V.S.Location-Based Advertising (LBA) is the most happening and latest thing in the marketing process. LBA provides advertisements (ads) based on the mobile user's current geographic position. LBA becomes more effective when advertisements are made available to mobile users according to their choice and taste. This paper covers a simple pull based LBA system which is integrated with a Service-Oriented Architecture (SOA) based Location-Based Services (LBS) system. This system is implemented using open standards based Web services technology which supports dynamic discovery and interoperability. This is a special kind of system which allows service providers to publish both services and their advertisements together at one place. The proposed system is demonstrated using a restaurant finder mobile application. © 2012 IEEE.Item A review of QoS driven optimal selection of web services for compositions(2012) D’Mello, D.A.; Ananthanarayana, V.S.Web services technology promises to enable rich, flexible and dynamic interoperation of highly distributed and heterogeneous applications using Web standards. The providers of composite Web services involving composition plan with different flow patterns need to discover and select suitable candidate Web services for each task of the composition plan at runtime. The dynamic nature of Web services prompts a need for the mechanism to enable the frequent editing of QoS offers of composite Web services by the Composite Service Providers (CSP). In this paper, the authors present a detailed survey of literature in QoS based selection for Web service compositions. The paper also presents different architectures for QoS aware Web service compositions and evaluates various QoS aware selection techniques. The authors classify QoS aware selection techniques for composition based on the nature of composition plan, complexity of QoS requirements and nature of techniques/methodology used in the selection and QoS aggregation. © Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2012.Item Cloud based service registry for location based mobile web services system(IEEE Computer Society help@computer.org, 2013) D'Souza, M.; Ananthanarayana, V.S.Location based services (LBS) are growing in popularity due to the growing number of smart-phone users. The architectural design of LBS systems plays a major role in delivering location based services in ubiquitous environments. Service oriented architecture (SOA) which uses services as its basic constructs is the latest trend in designing and developing loosely coupled distributed applications even in heterogeneous environments. Cloud computing is another latest area which provides highly reliable and scalable infrastructure environment for resource intensive applications. This paper gives an overview of SOA based LBS system and explains how to move service registry to the cloud to utilize the best of both SOA and Cloud infrastructure. © 2013 IEEE.Item Composition of location based services in decentralized registry based architecture(Springer Verlag, 2013) Kumari, K.; D'Souza, M.; Ananthanarayana, V.S.The massive growth of wireless communications and mobile database technologies has transformed the cell phone from being a mere portable phone to becoming an essential medium for contact, information and entertain-ment. A new trend has been evolved in mobile services which are used to provide user location based experience. It has opened a golden door for location based services. Location-based services denote services provided to mobile users according to their geographic location. There are two registry based archi-tecture, one is centralized and other is decentralized. In centralized architecture, first location of the user is determined and then central registry is looked up for requested services. In decentralized architecture, each of the location is sup-posed to be associated with a local registry which would be looked up for the requested services. But decentralized architecture is not able to give the information about services available in location other than user’s present location. There are a number of real world problems, which gives emphasis on the need of advance knowledge of availability of services present in other location and fulfillment of the total goal. Hence, in order to fulfill the above need, a methodology has been proposed in this paper. It minimizes the user involvement to a great extent in order to avail any online service. In this, composition plan would be created a priory to execution of services and selection of services would be based on QoS parameters in order to minimize the total cost. © Springer-Verlag Berlin Heidelberg 2013.