![]() The RPI data analysts can use ERS to submit expert ratings of plasmagram features, such as presence of echo traces resulted from reflected RPI signals from distant plasma structures. An expert rating system (ERS) was developed for annotating the IMAGE radio plasma imager (RPI) active sounding data containing 1.2 million plasmagrams. An effective prototype of the VWO Annotation Service has been in operation at the University of Massachusetts Lowell since 2001. The VWO Annotation Service vision is an interactive, collaborative sharing of domain expert knowledge with fellow scientists and students alike. They can therefore become the building blocks for an interactive Annotation Service with a suitable graphic user interface to the VWO middleware. However, in contrast to the event lists, annotation records allow a greater flexibility of collaborative management by more easily admitting operations of addition, revision, or deletion. Individual annotations can be sorted by phenomenon type and reduced into event lists (catalogs). Users of the virtual wave observatory (VWO) will greatly benefit from a data annotation service that will allow querying of data by phenomenon type, thus helping accomplish the VWO goal to make Heliophysics wave data searchable, understandable, and usable by the scientific community. Interpretation of Heliophysics wave data requires specialized knowledge of wave phenomena. ![]() Towards the VWO Annotation Service: a Success Story of the IMAGE RPI Expert Rating System
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