Wright State University | Computer Science & Engineering

Web services are the new paradigm for distributed computing. They have much to offer towards interoperability of applications and integration of large scale distributed systems. To make Web services accessible to users, service providers... more

In this paper, we introduce an approach that supports querying for Semantic Associations on the Semantic Web. Semantic Associations capture complex relationships between entities involving sequences of predicates, and sets of predicate... more

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- by Amit Sheth
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- 2
  Semantic Relationships, Semantic Associations

Extensions of the traditional atomic transaction model are needed to support the development of multi-system applications or work ows that access heterogeneous databases and legacy application systems. Most extended transaction models use... more

The basic transaction model has evolved over time to incorporate more complex transaction structures and to selectively modify the atomicity and isolation properties. In this chapter we discuss the application of transaction concepts to... more

In a multidatabase system, schematic conflicts between two objects are usually of interest only when the ob jects have some semantic affinity. In this paper we try to reconcile the two perspectives. We first define the concept of semantic... more

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- by Amit Sheth
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- Semantic similarity

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- by Amit Sheth
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- Global Information Systems

The computing environment in most medium-sized and large enterprises involves old main-frame based (legacy) applications and systems as well as new workstation-based distributed computing systems. The objective of the METEOR project is to... more

This article proposes that an organic workflow-process technology will power the evolution of information system architecture. The authors outline three likely stages of architectural evolution in the context of a networked economy and... more

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- by Amit Sheth
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- Workflow Management Systems

The main di culty in enforcing global serializability i n a m ultidatabase environment lies in resolving indirect (transitive) con icts between multidatabase transactions. Indirect con icts introduced by local transactions are di cult to... more

Web services have been recognized to have the potential to revolutionize ecommerce. The potential for businesses to be able to interact with each other on the fly is very appealing. To date, however, the activity of creating Web processes... more

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- by Amit Sheth
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- 12
  Information Systems, Marketing, Business and Management, Active Control

METEOR 2 work ow management systems consist of both (1) design/build-time and (2) run-time/enactment components for implementing w ork ow applications. An enactment system providesthe command, communicationand control for the... more

METEOR 2 work ow management systems consist of both (1) design/build-time and (2) run-time/enactment components for implementing w ork ow applications. An enactment system providesthe command, communicationand control for the individualtasks in the work ow. Tasks are the run-time instances of intra-or inter-enterprise applications. W e a r e d e v eloping three implementations of the METEOR 2 model: WebWork, OrbWork and NeoWork. This paper discusses WebWork, an implementation relying solely on Web technology as the infrastructure for the enactment system. WebWork supports a distributed implementation with participation of multiple Web servers. It also supports automatic code generation of work ow applications from design speci cations produced by a comprehensive graphical designer. WebWork has been developed as a complement of its more heavyweight counterparts (OrbWork and NeoWork), with the goal of providing ease of work ow application development, installation, use and maintenance. At the time of this writing, WebWork has been installed by s e v eral of the LSDIS Lab's industrial partners for testing, evaluation and building work ow applications. 2 MILLER, PALANISWAMI, SHETH, KOCHUT AND SINGH 29] is an enhanced version of the METEOR model 18] (a prototype implementation of the METEOR model was also developed). Three prototype implementations of the METEOR 2 model have been developed -OrbWork, a fully distributed CORBA-based dynamic work ow enactment system 17], NeoWork, a CORBAbased work ow enactment system with centralized schedulers, and WebWork, a fully distributed work ow enactment system relying solely on Web technology. This paper focuses on WebWork which is the rst implementation of METEOR 2 to be externally released. At the time of this writing, WebWork has been released to the Connecticut Healthcare Research and Education Foundation (CHREF), our partners in the HIIT/HITECC Advanced Technology Program funded by the National Institute of Standards and Technologies (NIST). A comprehensive real-world application for state-wide immunization tracking has been developed using WebWork, and tested at CHREF. WebWork is also being used by NIST, the Microelectronics and Computer Technology Corporation (MCC), the South Carolina Research Authority (SCRA) and the Boeing Company f o r e v aluating, testing and building demonstration applications. An example of an early use of WebWork and its customization to integrate with an organization's existing software components is described at http://www.nist.gov/apde/work ow 1 .

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- by Amit Sheth and +1
  Devanand Palaniswami
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- 2
  Workflow Management System, Intelligent Information Systems

Work ow management is primarily concerned with dependencies between the tasks of a work ow, to ensure correct control ow and data ow. Transaction management, on the other hand, is concerned with preserving data dependencies by preventing... more

Enabling applications that exploit heterogeneous data in the Semantic Web will require us to harness a broad variety of semantics. Considering the role of semantics in a number of research areas in computer science, we organize semantics... more

While the idea that querying mechanisms for complex relationships (otherwise known as Semantic Associations) should be integral to Semantic Web search technologies has recently gained some ground, the issue of how search results will be... more