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Web Services, 2007. ECOWS '07. Fifth European Conference on

26-28 Nov. 2007

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  • Fifth European Conference on Web Services - Cover

    Publication Year: 2007, Page(s): c1
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  • Fifth European Conference on Web Services - Title page

    Publication Year: 2007, Page(s):i - iii
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  • Fifth European Conference on Web Services - Copyright

    Publication Year: 2007, Page(s): iv
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  • Fifth European Conference on Web Services - TOC

    Publication Year: 2007, Page(s):v - vi
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  • Preface

    Publication Year: 2007, Page(s):vii - viii
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  • Conference organization

    Publication Year: 2007, Page(s):ix - x
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  • QoS-Aware Service Composition in Dino

    Publication Year: 2007, Page(s):3 - 12
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (311 KB) | HTML iconHTML

    A major advantage offered by Web services technologies is the ability to dynamically discover and invoke services. This ability is particularly important for operations of many applications executing in open dynamic environments. The QoS properties of the required and provided services play a significant role in dynamic discovery and invocation of services in open dynamic environments. In this pap... View full abstract»

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  • Composing Services with JOLIE

    Publication Year: 2007, Page(s):13 - 22
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (214 KB) | HTML iconHTML

    Service composition and service statefulness are key concepts in Web Service system programming. In this paper we present JOLIE, which is the full implementation of our formal calculus for service orchestration calledSOCK. JOLIE inherits all the formal semantics of SOCK and provides a C-like syntax which allows the programmer to design the service behaviour and the service deployment information s... View full abstract»

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  • Service Composition with Consistency-Based Matchmaking: A CSP-Based Approach

    Publication Year: 2007, Page(s):23 - 32
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB) | HTML iconHTML

    Automated discovery and composition of Web services and the representation of service semantics required to automate these tasks are active research areas that play a large role in current work on service oriented architectures. In this paper, we investigate the feasibility of service composition powered by a consistency-based approach for candidate selection during composition. The modeling restr... View full abstract»

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  • SOA and Web Services: New Technologies, New Standards - New Attacks

    Publication Year: 2007, Page(s):35 - 44
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB) | HTML iconHTML

    Being regarded as the new paradigm for Internet communication, Web Services have introduced a large number of new standards and technologies. Though founding on decades of networking experience, Web Services are not more resistant to security attacks than other open network systems. Quite the opposite is true: Web Services are exposed to attacks well-known from common Internet protocols and additi... View full abstract»

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  • Web Service Hosting and Revenue Maximization

    Publication Year: 2007, Page(s):45 - 54
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (415 KB) | HTML iconHTML

    An architecture of a hosting system is presented, where a number of servers are used to provide different types of web services to paying customers. There are charges for running jobs and penalties for failing to meet agreed QualityofService requirements. The objective is to maximize the total average revenue per unit time. Dynamic policies for making server allocation and job admission decisions ... View full abstract»

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  • Object-Oriented Similarity Measures for Semantic Web Service Matchmaking

    Publication Year: 2007, Page(s):57 - 66
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (542 KB) | HTML iconHTML

    The semantic annotation of Web services capabilities with ontological information aims at providing the necessary infrastructure for facilitating efficient and accurate service discovery. The main idea is to apply reasoning techniques over semantically enhanced Web service requests and advertisements in order to determine Web services that meet certain requirements. In this paper we present our wo... View full abstract»

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  • Semantic-Driven Matchmaking and Composition of Web Services Using Case-Based Reasoning

    Publication Year: 2007, Page(s):67 - 76
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (443 KB) | HTML iconHTML

    With the rapid proliferation of Web services as the medium of choice to securely publish application services beyond the firewall, the importance of accurate, yet flexible matchmaking of similar services gains importance both for the human user and for dynamic composition engines. In this paper, we present a novel approach that utilizes the case based reasoning methodology for modelling dynamic We... View full abstract»

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  • WSMO-Lite: lightweight semantic descriptions for services on the web

    Publication Year: 2007, Page(s):77 - 86
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (221 KB) | HTML iconHTML

    The current Web service technology brought a new potential to the Web of services. However, the success of Web services still depends on resolving three fundamental challenges, namely search, integration and mediation. In this paper we define an extended Web service stack enabling total or partial automation of web service provisioning process. With the goal of a maximal Web standards compliance, ... View full abstract»

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  • Specifying and Monitoring Composite Events for Semantic Web Services

    Publication Year: 2007, Page(s):87 - 96
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    Execution monitoring of complex web service process models is critical for effective management and control of web services based systems. During the composite process model execution or as part of the after-execution analysis complex event patterns (called composite events) consisting of various primitive events need to be detected. In this paper we introduce the concept of primitive semantic eve... View full abstract»

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  • WS-Policy based Monitoring of Composite Web Services

    Publication Year: 2007, Page(s):99 - 108
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB) | HTML iconHTML

    MASC (Manageable and Adaptive Service Compositions)1* is a policy-based middleware for monitoring and control of composite Web services execution. The monitorable requirements are specified in the WS-Policy4MASC language that extends WS-Policy by defining new types of monitoring and control policy assertions. This paper focuses on MASC monitoring capabilities to detect business exceptions and runt... View full abstract»

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  • A Comparative Performance Evaluation of Different Implementations of the SOAP Protocol.

    Publication Year: 2007, Page(s):109 - 118
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (495 KB) | HTML iconHTML

    This paper presents a study evaluation of the SOAP [13] protocol performance between two different implementations: Java (Axis2) [2] and Erlang. This comparison has been carried out using several testbeds with input and output data of different sizes. More concretely, we developed three different web services representing typical scenarios likely to be found in real environments. The evaluation is... View full abstract»

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  • Automatic Learning of Repair Strategies for Web Services

    Publication Year: 2007, Page(s):119 - 128
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (325 KB) | HTML iconHTML

    The process of repairing Web Service failures may be connected to the nature of the fault that caused the error generating the failure. The selection strategy for composed services repair may be drawn from an analysis on temporal behavior of the fault, assessing if fault is transient, intermittent or permanent. The repair process strictly depends on the permanence type of faults, as substitution i... View full abstract»

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  • Secure Emails in XML Format Using Web Services

    Publication Year: 2007, Page(s):129 - 136
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (197 KB) | HTML iconHTML

    Cryptographically signed email has been widely used to provide the end-to-end authentication, integrity and non-repudiation. PGP mail and S/MIME have the significant drawback that the headers are unauthentic. DKIM protects specified headers, however, only between the sending server and the receiver. These lead to possible impersonation attacks and profiling of the email communication, and encourag... View full abstract»

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  • Matching Strictly Dependent Global Constraints for Composite Web Services

    Publication Year: 2007, Page(s):139 - 148
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (669 KB) | HTML iconHTML

    Web service discovery requires matching techniques for comparing and selecting web service descriptions based on user constraints. Semantic-based approaches achieve higher recall than other approaches (such as syntax-based approaches), because they employ ontological reasoning mechanisms to match syntactically heterogeneous descriptions. However, existing semantic-based approaches are not scalable... View full abstract»

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  • Transactional BPEL Processes with AO4BPEL Aspects

    Publication Year: 2007, Page(s):149 - 158
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (682 KB) | HTML iconHTML

    Recently, OASIS approved two standards respectively for Web Service composition and for Web Service transactions. Nevertheless, it is still unclear how WS-BPEL and the WS-TX family of specifications interoperate, i.e., how to use atomic transactions and business activities in the context of BPEL processes. In this paper, we present several transactional requirements in BPEL processes and argue tha... View full abstract»

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  • History-Based Aspect Weaving for WS-BPEL Using Padus

    Publication Year: 2007, Page(s):159 - 167
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (253 KB) | HTML iconHTML

    Workflow languages provide a natural way to express business processes, and therefore they are preferred over general-purpose programming languages to specify such processes. However, current workflow languages offer no support for separating crosscutting concerns which results in workflows that are hard to maintain and evolve. Recent research introduces aspect-oriented extensions to these languag... View full abstract»

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  • Structural Matching of BPEL Processes

    Publication Year: 2007, Page(s):171 - 180
    Cited by:  Papers (11)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (226 KB) | HTML iconHTML

    BPEL has emerged as the industrial standard language for modelling behavioral aspects of web services. To support business partners in dynamically and flexibly binding their services together, different BPEL processes need to be efficiently matched. This paper identifies and defines various types of structural matching for BPEL processes. The matching definitions are based on heuristics: they take... View full abstract»

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  • Semantic QoS-based Web Service Discovery Algorithms

    Publication Year: 2007, Page(s):181 - 190
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (249 KB) | HTML iconHTML

    The success of the Web Service (WS) paradigm has led to a proliferation of available WSs, which are advertised in WS registries. While sophisticated semantic WS discovery algorithms are operating on these registries to return matchmaking results with high precision and recall, many functionally-equivalent WSs are returned. The solution to the above problem comes in terms of semantic QoS-based desc... View full abstract»

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  • Towards Optimized Data Fetching for Service Discovery

    Publication Year: 2007, Page(s):191 - 200
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (229 KB) | HTML iconHTML

    The advent of Service Oriented Architecture makes services the most flexible, platform-independent choice for exposing and integrating business functionality across a network. However, the lack of service discovery mechanisms, that go beyond simple keyword search to enable automated late-binding of service requesters to providers, remains a major problem. Realistic late-binding involves matchmakin... View full abstract»

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