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We present an OWLS service composition planner, called OWLS-Xplan, that allows for fast and flexible composition of OWLS services in the semantic Web. OWLS-Xplan converts OWLS 1.1 services to equivalent problem and domain descriptions that are specified in the planning domain description language PDDL 2.1, and invokes an efficient AI planner Xplan to(More)
In this paper, we present the implementation, evaluation, and application of our OWLS service composition planner OWLS-XPlan. Medical services described in OWLS 1.1 and ontologies are converted to initial state and goal descriptions in PDDL 2.1, which are then used by the fast heuristic FF planner XPlan for generating an execution complete composition plan.(More)
In this paper, we present the implementation, evaluation, and application of our OWL-S service composition planner OWLS-XPlan. Services in OWL-S 1.1 and ontologies are converted to initial state and goal descriptions in PDDL 2.1, which are then used by the fast heuristic FF planner XPlan for generating an execution complete composition plan. Results of(More)
OBJECTIVES To characterize patterns of electronic medical record (EMR) use at pediatric primary care acute visits. DESIGN Direct observational study of 529 acute visits with 27 experienced pediatric clinician users. MEASUREMENTS For each 20 s interval and at each stage of the visit according to the Davis Observation Code, we recorded whether the(More)
B2B interactions, like electronic negotiations and auctions between suppliers and customers, could be significantly improved by enabling the participants to adapt their bidding strategies to current logistics information (e.g., about transportation condition, cost or dates) while the negotiation goes on. We present an approach of an agent-based information(More)
In this paper, we present an approach to solve the problem of secure execution of semantic web service composition plans. The integrated components of this approach include our OWLS service match-maker, OWLS-MX, the service composition planner, OWLS-XPlan, and the security checker module for formally verifying the compliance of the created composition plan(More)