A crucial component of a net-centric information management system is a set of simple programs or scripts - fuselets - that effect small transformations on available data. Individual fuselets can perform tasks such as filtering, aggregation, monitoring, format conversion, and simple image manipulation. The global effect of a collection of cooperating fuselets is to add value to the system: to transform data into knowledge. Fuselets are also adept at bridging heterogeneous systems, providing consumers the data they need in the format they require - not necessarily the format that was convenient for the original data producer. ATC-NY has created an extensible fuselet development environment, iFUSE, that provides the support fuselet developers need in order to create and discover fuselets, avoid design and efficiency pitfalls, and ensure the appropriate factorization of fuselet code. For the individual fuselet, iFUSE lets the user focus on the information being transformed, not the code needed to implement the transformation. iFUSE also helps the designer understand the environment in which the fuselet operates, automatically detecting potential data flow problems and providing visualization tools such as "fuselet slicing," which allows fuselet authors and infosphere maintainers to assess the effects of additions and changes in context.
KEYWORDS: Sensors, Web services, Databases, Environmental management, Data storage, Defense and security, Analytical research, Reliability, Statistical analysis, Information operations
Modern Defense strategy and execution is increasingly net-centric, making more information available more quickly. In this environment, the intelligence agent or warfighter must distinguish decision-quality information from potentially inaccurate, or even conflicting, pieces of information from multiple sources - often in time-critical situations. The Pedigree Management and Assessment Framework (PMAF) enables the publisher of information to record standard provenance metadata about the source, manner of collection, and the chain of modification of information as it passed through processing and/or assessment. In addition, the publisher can define and include other metadata relevant to quality assessment, such as domain-specific metadata about sensor accuracy or the organizational structure of agencies. PMAF stores this potentially enormous amount of metadata compactly and presents it to the user in an intuitive graphical format, together with PMAF-generated assessments that enable the user to quickly estimate information quality. PMAF has been created for a net-centric information management system; it can access pedigree information across communities of interest (COIs) and across network boundaries and will also be implemented in a Web Services environment.
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