The Experts below are selected from a list of 19233 Experts worldwide ranked by ideXlab platform
Matthias Klusch - One of the best experts on this subject based on the ideXlab platform.
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Semantic Web Service Search: A Brief Survey
KI - Künstliche Intelligenz, 2016Co-Authors: Matthias Klusch, Freddy Lecue, Patrick Kapahnke, Stefan Schulte, Abraham BernsteinAbstract:Scalable means for the search of relevant Web Services are essential for the development of intelligent Service-based applications in the future Internet. Key idea of Semantic Web Services is to enable such applications to perform a high-precision search and automated composition of Services based on formal ontology-based representations of Service Semantics. In this paper, we briefly survey the state of the art of Semantic Web Service search.
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sawsdl mx2 a machine learning approach for integrating Semantic Web Service matchmaking variants
International Conference on Web Services, 2009Co-Authors: Matthias Klusch, Patrick Kapahnke, Ingo ZinnikusAbstract:In this paper, we present SAWSDL-MX2, a hybrid Semantic Web Service matchmaker for SAWSDL Services. Building on our initial work in \cite{Klu_Kap_08}, we adopt logic-based as well as text similarity Service selection for model references and add a structural approach from \cite{Zin_Rup_Fis_06}, which operates on the pure syntactic description of WSDL elements. The integration of these matching variants is accomplished using a Support Vector Machine (SVM) with non-linear kernel, thus automatically adapting an aggregation function based on previously experienced training data. Results of our performance evaluation based on the standard measures recall and precision over the SAWSDL-TC1 test collection as well as an exhaustive example for all basic matching variants are also given.
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owls mx a hybrid Semantic Web Service matchmaker for owl s Services
Journal of Web Semantics, 2009Co-Authors: Matthias Klusch, Benedikt Fries, Katia P. SycaraAbstract:In this paper, we describe the first hybrid Semantic Web Service matchmaker for OWL-S Services, called OWLS-MX. It complements crisp logic-based Semantic matching of OWL-S Services with token-based syntactic similarity measurements in case the former fails. The results of the experimental evaluation of OWLS-MX provide strong evidence for the claim that logic-based Semantic matching of OWL-S Services can be significantly improved by incorporating non-logic-based information retrieval techniques. An additional analysis of false positives and false negatives of the hybrid matching filters of OWLS-MX led to an even further improved matchmaker version called OWLS-MX2.
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wsmo mx a hybrid Semantic Web Service matchmaker
Web Intelligence and Agent Systems: An International Journal, 2009Co-Authors: Matthias Klusch, Frank KauferAbstract:The WSMO-MX Service matchmaker applies different matching filters to retrieve Semantic Web Services written in a dialect of the prominent Service description language WSML-Rule. For this purpose, WSMO-MX recursively computes logic-based and syntactic similarity-based matching degrees and returns a ranked set of Services that are Semantically relevant to a given query. The matching filters perform ontology-based type matching, logical constraint matching, and syntactic matching. In this paper, we present the Service description language WSML-MX, the hybrid matchmaker WSMO-MX for WSML Services converted to WSML-MX, and the results of our experimental evaluation of its performance in terms of recall and precision over the test collection WSML-TC2.
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Semantic Web Service selection with sawsdl mx
SMRR'08 Proceedings of the Second International Conference on Service Matchmaking and Resource Retrieval in the Semantic Web - Volume 416, 2008Co-Authors: Matthias Klusch, Patrick KapahnkeAbstract:In this paper, we present an approach to hybrid Semantic Web Service selection of Semantic Services in SAWSDL based on logic-based matching as well as text retrieval strategies. We discuss the principles of Semantic Web Service description in SAWSDL and selected problems for Service matching implied by its specification. Based on the result of this discussion, we present different variants of hybrid Semantic selection of SAWSDL Services implemented by our matchmaker called SAWSDL-MX together with preliminary results of its performance in terms of recall/precision and average query response time. For experimental evaluation we created a first version of a SAWSDL Service retrieval test collection called SAWSDL-TC.
Katia P. Sycara - One of the best experts on this subject based on the ideXlab platform.
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owls mx a hybrid Semantic Web Service matchmaker for owl s Services
Journal of Web Semantics, 2009Co-Authors: Matthias Klusch, Benedikt Fries, Katia P. SycaraAbstract:In this paper, we describe the first hybrid Semantic Web Service matchmaker for OWL-S Services, called OWLS-MX. It complements crisp logic-based Semantic matching of OWL-S Services with token-based syntactic similarity measurements in case the former fails. The results of the experimental evaluation of OWLS-MX provide strong evidence for the claim that logic-based Semantic matching of OWL-S Services can be significantly improved by incorporating non-logic-based information retrieval techniques. An additional analysis of false positives and false negatives of the hybrid matching filters of OWLS-MX led to an even further improved matchmaker version called OWLS-MX2.
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automated Semantic Web Service discovery with owls mx
Adaptive Agents and Multi-Agents Systems, 2006Co-Authors: Matthias Klusch, Benedikt Fries, Katia P. SycaraAbstract:We present an approach to hybrid Semantic Web Service matching that complements logic based reasoning with approximate matching based on syntactic IR based similarity computations. The hybrid matchmaker, called OWLS-MX, applies this approach to Services and requests specified in OWL-S. Experimental results of measuring performance and scalability of different variants of OWLS-MX show that under certain constraints logic based only approaches to OWL-S Service I/O matching can be significantly outperformed by hybrid ones.
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Semantic Web Service discovery in the owl s ide
Hawaii International Conference on System Sciences, 2006Co-Authors: Naveen Srinivasan, Massimo Paolucci, Katia P. SycaraAbstract:The increasing availability of Web Services necessitates efficient discovery and execution framework. The use of xml at various levels of Web Services standards poses challenges to the above process. OWL-S is a Service ontology and language, whose Semantics are based on OWL. The Semantics provided by OWL support greater automation of Service selection, invocation, translation of message content between heterogeneous Services, and Service composition. The development and consumption of an OWL-S based Web Service is time consuming and error prone. OWL-S IDE assists developers in the Semantic Web Service development, deployment and consumption processes. In order to achieve this the OWL-S IDE uses and extends existing Web Service tools. In this paper we will look in detail at the support for discovery for Semantic Web Services. We also present the matching schemes, the implementation and the results of performance evaluation.
Freddy Lecue - One of the best experts on this subject based on the ideXlab platform.
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Semantic Web Service Search: A Brief Survey
KI - Künstliche Intelligenz, 2016Co-Authors: Matthias Klusch, Freddy Lecue, Patrick Kapahnke, Stefan Schulte, Abraham BernsteinAbstract:Scalable means for the search of relevant Web Services are essential for the development of intelligent Service-based applications in the future Internet. Key idea of Semantic Web Services is to enable such applications to perform a high-precision search and automated composition of Services based on formal ontology-based representations of Service Semantics. In this paper, we briefly survey the state of the art of Semantic Web Service search.
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optimizing qos aware Semantic Web Service composition
International Semantic Web Conference, 2009Co-Authors: Freddy LecueAbstract:Ranking and optimization of Web Service compositions are some of the most interesting challenges at present. Since Web Services can be enhanced with formal Semantic descriptions, forming the "Semantic Web Services", it becomes conceivable to exploit the quality of Semantic links between Services (of any composition) as one of the optimization criteria. For this we propose to use the Semantic similarities between output and input parameters of Web Services. Coupling this with other criteria such as quality of Service (QoS) allow us to rank and optimize compositions achieving the same goal. Here we suggest an innovative and extensible optimization model designed to balance Semantic fit (or functional quality) with non-functional QoS metrics. To allow the use of this model in the context of a large number of Services as foreseen by the strategic EC-funded project SOA4All we propose and test the use of Genetic Algorithms.
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towards scalability of quality driven Semantic Web Service composition
International Conference on Web Services, 2009Co-Authors: Freddy Lecue, Nikolay MehandjievAbstract:Optimizating Semantic Web Service compositions is known to be NP-hard, so most approaches restrict the number of Services and offer poor scalability. We address the scalability issue by selecting compositions which satisfy a set of constraints rather than attempting to produce an optimal composition. Firstly, we define constraints within an innovative and extensible quality model designed to balance Semantic fit (or functional quality) with quality of Service (QoS) metrics. The Semantic fit criterion evaluates the quality of Semantic links between the Semantic description of Web Services parameters, whilst QoS focuses on non-functional criteria of Services. Coupling these criteria allows us to further constrain and select valid compositions. To allow the use of this model in the context of millions of Services as foreseen by the strategic EC-funded project SOA4All, we i) formulate the selection problem as a Constraint Satisfaction Problem and ii) test the use of a stochastic search method. Finally we compare the latter with state-of-the-art approaches.
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applying abduction in Semantic Web Service composition
International Conference on Web Services, 2007Co-Authors: Freddy Lecue, Alexandre Delteil, Alain LégerAbstract:The Semantic Web promises to bring automation to the areas of Web Service selection, discovery, composition, invocation. In this paper we introduce a means of facilitating automation of Web Service composition by exploiting Semantic matchmaking between Web Service parameters (i.e., outputs and inputs) to enable their connections and interactions. The idea is that matchmaking functions are key components to find Semantic compatibilities among independently Web Service descriptions. To this end, our approach extends existing methods (exact, plug-in, subsume, intersection and fail) with concept abduction to provide explanations of misconnections between Web Services. From this we generate Web Service compositions that realize the goal, discovering and satisfying Semantic connections between Web Services. Moreover a process of relaxing the hard constraints is introduced in case the composition process failed. Our system is implemented and interacting with Web Services dedicated on a France Telecom scenario.
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A Formal Model for Semantic Web Service Composition
The Semantic Web -5th international conference on The Semantic Web (ISWC'06), 2006Co-Authors: Freddy Lecue, Alain LégerAbstract:Automated composition of Web Services or the process of forming new value added Web Services is one of the most promising challenges in the Semantic Web Service research area. Semantics is one of the key elements for the automated composition of Web Services because such a process requires rich machine-understandable descriptions of Services that can be shared. Semantics enables Web Service to describe their capabilities and processes, nevertheless there is still some work to be done. Indeed Web Services described at functional level need a formal context to perform the automated composition of Web Services. The suggested model (i.e., Causal link matrix) is a necessary starting point to apply problem-solving techniques such as regression-based search for Web Service composition. The model supports a Semantic context in order to find a correct, complete, consistent and optimal plan as a solution. In this paper an innovative and formal model for an AI planning-oriented composition is presented.
Markus Kraft - One of the best experts on this subject based on the ideXlab platform.
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an ontology and Semantic Web Service for quantum chemistry calculations
Journal of Chemical Information and Modeling, 2019Co-Authors: Nenad Krdzavac, Sebastian Mosbach, Daniel Nurkowski, Philipp Buerger, Jethro Akroyd, Jacob W Martin, Angiras Menon, Markus KraftAbstract:The purpose of this article is to present an ontology, termed OntoCompChem, for quantum chemistry calculations as performed by the Gaussian quantum chemistry software, as well as a Semantic Web Service named MolHub. The OntoCompChem ontology has been developed based on the Semantics of concepts specified in the CompChem convention of Chemical Markup Language (CML) and by extending the Gainesville Core (GNVC) ontology. MolHub is developed in order to establish Semantic interoperability between different tools used in quantum chemistry and thermochemistry calculations, and as such is integrated into the J-Park Simulator (JPS)-a multidomain interactive simulation platform and expert system. It uses the OntoCompChem ontology and implements a formal language based on propositional logic as a part of its query engine, which verifies satisfiability through reasoning. This paper also presents a NASA polynomial use-case scenario to demonstrate Semantic interoperability between Gaussian and a tool for thermodynamic data calculations within MolHub.
Federico Michele Facca - One of the best experts on this subject based on the ideXlab platform.
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model driven design and development of Semantic Web Service applications
ACM Transactions on Internet Technology, 2007Co-Authors: Marco Brambilla, Stefano Ceri, Federico Michele Facca, Irene Celino, Dario Cerizza, Emanuele Della ValleAbstract:This article proposes a model-driven methodology to design and develop Semantic Web Service applications and their components, described according to the emerging WSMO standard. In particular, we show that business processes and Web engineering models have sufficient expressive power to support the semiautomatic extraction of Semantic descriptions (i.e., WSMO ontologies, goals, Web Services, and mediators), thus partially hiding the complexity of dealing with Semantics. Our method is based on existing models for the specification of business processes (BPMN) combined with Web engineering models for designing and developing Semantically rich Web applications (WebML). The proposed approach leads from an abstract view of the business needs to a concrete implementation of the application by means of several design steps; high-level models are transformed into software components. Our framework increases the efficiency of the whole design process, yielding to the construction of Semantic Web Service applications spanning over several enterprises.
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a software engineering approach to design and development of Semantic Web Service applications
International Semantic Web Conference, 2006Co-Authors: Marco Brambilla, Stefano Ceri, Irene Celino, Dario Cerizza, Emanuele Della Valle, Federico Michele FaccaAbstract:We present a framework for designing and developing Semantic Web Service applications that span over several enterprises by applying techniques, methodologies, and notations offered by Software engineering, Web engineering, and Business Process modeling. In particular, we propose to exploit existing standards for the specification of business processes (e.g., BPMN), for modeling the cross enterprise process, combined with powerful methodologies, tools and notations (e.g., WebML) borrowed from the Web engineering field for designing and developing Semantically rich Web applications, with semi-automatic elicitation of Semantic descriptions (i.e., WSMO Ontologies, Goals, Web Services and Mediators) from the design of the applications, with huge advantages in terms of efficiency of the design and reduction of the extra work necessary for Semantically annotating the information crossing the organization boundaries.
