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CONCLUSIONS AND RECOMMENDATIONSThe MEDLARS evaluation, discussed in this report, was a complete system evaluation inasmuch as it studied all components affecting the performance of the system as measured by the satisfaction of MEDLARS users. The benefit of this type of evaluation program lies not in detecting specific failures, but in identifying kinds of failures that are prone to occur, and indicating in which areas corrective action is most urgently needed. Overall MEDLARS performance The test results have shown that the system is operating, on the average, at about 58%, recall and 50 % precision. On the average, it retrieves about 65 % of the major value literature in its base at 50 % precision. However, as previously noted, averages are somewhat misleading in this context. Few of the individual search results fall in the area bounded by the average ratios + 5%. In fact, the results are widely scattered. Some of the searches appear to have performed very well, with high recal

Year: 2013
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