Does indexing exhaustivity matter?
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TL;DR
Experiments with two distinct collections, using three levels of indexing exhaustivity for both documents and requests, show that substantially the same performance is obtained for very different levels of document indexing, if suitable choices are made of request level.
Abstract
Abstract Indexing exhaustivity, which may be broadly defined as the number of terms assigned to a document, is thought to be of some importance in retrieval, and it has been suggested that there may be an optimal level of exhaustivity for a particular collection. Experiments with two distinct collections, using three levels of indexing exhaustivity for both documents and requests, show that substantially the same performance is obtained for very different levels of document indexing, if suitable choices are made of request level.