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IEEE 7th International Conference on E-Science, e-Science 2011, Stockholm, Sweden, December 5-8, 2011; 01/2011
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Procedia CS. 01/2011; 4:732-739.
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Joe Futrelle,
Jeff Gaynor,
Joel Plutchak,
James D. Myers,
Robert E. McGrath,
Peter Bajcsy,
Jason Kastner,
Kailash Kotwani,
Jong Sung Lee, Luigi Marini,
Rob Kooper,
Terry McLaren,
Yong Liu
Concurrency and Computation: Practice and Experience. 01/2011; 23:2107-2117.
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James D. Myers,
Joe Futrelle,
Jeff Gaynor,
Joel Plutchak,
Peter Bajcsy,
Jason Kastner,
Kailash Kotwani,
Jong Sung Lee, Luigi Marini,
Rob Kooper,
Robert E. McGrath,
Terry McLaren,
Alejandro Rodriguez,
Yong Liu
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ABSTRACT: The promise of e-Science will only be realized when data is discoverable, accessible, and comprehensible within distributed teams, across disciplines, and over the long-term--without reliance on out-of-band (non-digital) means. We have developed the open-source Tupelo semantic content management framework and are employing it to manage a wide range of e-Science entities (including data, documents, workflows, people, and projects) and a broad range of metadata (including provenance, social networks, geospatial relationships, temporal relations, and domain descriptions). Tupelo couples the use of global identifiers and resource description framework (RDF) statements with an aggregatable content repository model to provide a unified space for securely managing distributed heterogeneous content and relationships.
03/2009;
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17th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, ACM-GIS 2009, November 4-6, 2009, Seattle, Washington, USA, Proceedings; 01/2009
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Fourth International Conference on e-Science, e-Science 2008, 7-12 December 2008, Indianapolis, IN, USA; 01/2008
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Fourth International Conference on e-Science, e-Science 2008, 7-12 December 2008, Indianapolis, IN, USA; 01/2008
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Fourth International Conference on e-Science, e-Science 2008, 7-12 December 2008, Indianapolis, IN, USA; 01/2008
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Joe Futrelle,
Jeff Gaynor,
Joel Plutchak,
Peter Bajcsy,
Jason Kastner,
Kailash Kotwani,
Jong Sung Lee, Luigi Marini,
Rob Kooper,
Robert E. McGrath,
Terry McLaren,
Yong Liu,
James D. Myers
Fourth International Conference on e-Science, e-Science 2008, 7-12 December 2008, Indianapolis, IN, USA; 01/2008
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16th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, ACM-GIS 2008, November 5-7, 2008, Irvine, California, USA, Proceedings; 01/2008
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Barbara S. Minsker,
Jim Myers,
Mark Marikos,
Tim Wentling,
Steve Downey,
Yong Liu,
Peter Bajcsy,
Rob Kooper, Luigi Marini,
Noshir S. Contractor,
Harold D. Green,
Joe Futrelle
Proceedings of the ACM/IEEE SC2006 Conference on High Performance Networking and Computing, November 11-17, 2006, Tampa, FL, USA; 01/2006
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ABSTRACT: The purpose of this white paper is to outline computer science issues related to the Task entitled "Create end-to-end meta-workflow demonstration" which is one part of the NCSA Environmental Cyber-Infrastructure Development (ECID) effort. Our goal is to research and develop meta-workflow architectures to support a set of environmental science and hydrology demonstrations in the short term and to support a spectrum of application communities in the long term. From the NCSA institutional view point, this white paper documents our design phase and provides an overview of meta-workflow definitions, previous work on workflows, a set of requirements, proposed meta-workflow architecture, and the current features of the prototype meta-workflow implementation called CyberIntegrator. From the computer science view point, the paper presents the problem of designing a highly interactive scientific meta-workflow system that aims at building complex problem-solving environments from heterogeneous tools. Driven by systems-science use cases and complex informatics problems, we identify the dimensions along which current workflow technologies must grow to become a robust cyber-infrastructure capable of scaling to meet the national needs. Being able to join workflows developed using modules from the multiple open source and commercial workflow systems in use in various sub-disciplines is an obvious need. Less obvious but also critically important are abilities to describe and share workflow fragments, to execute portions of workflows on different appropriate hosts, or to provide security, provenance and fault-tolerance features of software execution. We introduce the term meta-workflow to refer to workflow systems designed to meet these end-to-end needs. We then discuss the architecture and implementation of a meta-workflow prototype called CyberIntegrator developed at NCSA. Our current meta-workflow architecture enables users (1) to browse registries of data, tools and computational resources, (2) to create meta-workflows by example or for batch processing, (3) to re-use and re-purpose meta-workflows, (4) to execute meta-workflows locally or remotely, and (5) to incorporate heterogeneous tools and link them transparently. The contribution of our work is (a) in defining the meta-workflow concept focused on science requirements and (b) in architecting technology and prototyping CyberIntegrator software supporting environmental observatories and other applications.
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ABSTRACT: This paper describes our first step towards the realization of complex and large scale cross-organization virtual observatories by presenting a new semantically-enhanced "Sensor Network as a Service" (SNaaS) framework, which can repurpose existing sensor networks as needed and aggregate and fuse heterogeneous sensors into new virtual sensors in near-real-time. The architecture of this system allows users to create virtual sensors in a Web 2.0 collaborative map interface. Components of the system are highlighted in the paper including a semantically enhanced streaming data toolkit, virtual sensor ontologies and management middleware. Case studies are presented which can allow users to create new virtual rain gages based on the NEXRAD (Next Generation Weather Radar) data stream with or without in-situ rain gages on demand in a Chicago urban watershed testbed. The resulting virtual sensor data streams then can be published in multiple formats including a SWE-compliant one so that external SWE-compliant users and applications can seamlessly query and integrate them.
Collaborative Technologies and Systems, International Symposium on.
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ABSTRACT: This paper presents a semantic data, document and event management environment, implemented as extensions to the open–source Liferay portal which provides enhanced support for storage and retrieval of data, metadata, user interaction and computational provenance and opens the door to new modes of search and navigation based on geospatial, social, provenance, and thematic contexts. This also enables discovery of relations among data, events, workflow and people. This environment, packaged as the CyberCollaboratory, provides a much richer interaction environment for groups and communities.
eScience, IEEE International Conference on.
