Retrieval test evaluation of a rule based automatic indexing (AIR/PHYS)
Norbert Fuhr, Gerhard Knorz · 1984
The automatic indexing system AIR/PHYS and its evaluation by means of a retrieval test with 309 requests and 15,000 documents is described. First, the underlying conception of a rule based approach is given which is suited to the task of a controlled-vocabulary indexing of even large subject fields. Preconditions, performance and results of the retrieval test are described, including first results of retrieval runs with weighted automatic indexing.