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<br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />Detailed Work Plan <br /> <br />For this task, each problem analyzed during the problem-centered design effort will <br />be . walked-through . with users in order to identify what data is needed to support the <br />solution of that problem. <br /> <br />Data for the CRDSS can be either straightforward sequences of any of the four data <br />scales (categorical, ordinal, interval, or continuous). However, depending on the needs of <br />models for input and the needs for particular types of output as expressed by users, higher <br />fonns of derived data may need to be generated. When this is indeed the case, the process <br />goes deeper to finding the set of base data from which the complex data are derived, and also <br />into the specification of the various combinations and functions through which base data are <br />compiled into complex data. <br /> <br />The required complexity and derivation relationships among various data depend on <br />the results of the needs analysis. Aspects such as the spatial and temporal granularity of data, <br />absolute versus relative data values, absolute versus relative frequencies,' the various <br />categorizations of both numerical and non-numerical data, and possible measures of <br />certainty/uncertainty associated with particular pieces of infonnation, need to be assessed and <br />evaluated against expressed needs. <br /> <br />Also, visualization tools may need to be developed for displaying particular types of <br />data. Although the actual development of those tools will be a task for the actual <br />development of the CRDSS, the feasibility study needs to provide guidelines as to the <br />,ccmplexity/derivation or required data. <br /> <br />Tne foregoing evaluations will identify any gaps in data that require to be fIlled in _ <br />order to meet system needs. Once the data needs and the relationships among the various <br />data have been established, a number of issues considering the representation of this data in <br />the CRDSS and the acquirement of that data will be addressed. These include: <br /> <br />· Is the data time-series based? If so,is the data near real-time data, historical data, <br />or simulated? <br /> <br />· What is the reliability/accuracy of the data? <br /> <br />. Is the data in a digital fonnat? <br /> <br />· Is the data available in a hard copy form? <br /> <br />· Is the data tabular? <br /> <br />. Is the data graphic? <br /> <br />· What is the source of the data? <br /> <br />. Where does the data reside and who owns it? <br /> <br />-8- <br />