Information Systems and the Environment (2001) / Chapter Skim
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InfoSleuth: An Emerging Technology for Sharing Distributed Environmental Information
InfoSleuth: An Emerging Technology for Sharing Distributed Environmental Information
Pages 159-172
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From page 159... ...
The result is a need for information systems that can uniformly deliver both structured and unstructured data, access different structured databases using a single query language and logical structure, manipulate the data from these distributed sources, and communicate with users via software standards and behavior metaphors that they find comfortable. Environmental information systems are no exception to this cultural revolution.
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From page 160... ...
The InfoSleuth Project at MCC broadened the focus of database research to produce a model that seeks to combine the semantic benefits of structured database systems with the ease of publication and access of the Web (Bayardo et al., 1997~. This change in fundamental requirements dictates a pragmatic approach to merging existing research in database technology with research from other computer disciplines.
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From page 161... ...
In this previous work, MCC developed semantic modeling techniques that enabled the integration of static information resources and pioneered the use of intelligent agents to provide interoperation among autonomous systems. The InfoSleuth Project extended these capabilities into dynamically changing environments, where the identities of the resources to be used may be unknown at the time the system is designed.
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From page 162... ...
Provides a mapping from the global ontology to the database schema and language native to its resource and executes the requests specific to that resource, including subscription queries and notification requests. Resource agents exist not only for structured databases, but also for unstructured data sources that serve text or images.
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From page 163... ...
The InfoSleuth model of dynamic distributed information management has several strong parallels with a library system. A library' s physical infrastructure is its building; similarly, a distributed information system comprises the computers and the networks connecting them.
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From page 165... ...
ENVIRONMENTAL DATA EXCHANGE NETWORK PILOT PROJECT System Characteristics The broad collaborative effort of the EDEN Project focuses on two areas. The first area is to describe the content of environmental information.
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167 — COCK ~ an.
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To the extent possible, the ontology is being constructed using terms from the General European Multilingual Environmental Thesaurus
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From page 169... ...
to assist in resolving value mapping between the different ways that database designers have used for storing data values that express the same concept (such as conversion between English and metric measures or reconciling different ways of identifying chemical contaminants)
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170 Cal ·_.
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From page 171... ...
Figure 5 depicts a user interface that has been configured to support a particular sequence of queries relating to the identification of remediation technologies associated with particular sites. The displayed results are a fragment of those retrieved from a demonstration system that accessed the Coordinated Emergency Response Cleanup and Liability Information System, the Hazards Data, and Innovative Treatment Technologies.
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From page 172... ...
, NCR Corporation, Schlumberger, Raytheon Systems, Texas Instruments, TRW, and the DOD Clinical Business Area. REFERENCES Bayardo, R.J., W
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